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authorThomas Huth <thuth@redhat.com>2016-10-11 08:56:52 +0200
committerThomas Huth <thuth@redhat.com>2016-12-20 21:52:12 +0100
commitfcf5ef2ab52c621a4617ebbef36bf43b4003f4c0 (patch)
tree2b450d96b01455df8ed908bf8f26ddc388a03380 /target-ppc/kvm.c
parent82ecffa8c050bf5bbc13329e9b65eac1caa5b55c (diff)
Move target-* CPU file into a target/ folder
We've currently got 18 architectures in QEMU, and thus 18 target-xxx folders in the root folder of the QEMU source tree. More architectures (e.g. RISC-V, AVR) are likely to be included soon, too, so the main folder of the QEMU sources slowly gets quite overcrowded with the target-xxx folders. To disburden the main folder a little bit, let's move the target-xxx folders into a dedicated target/ folder, so that target-xxx/ simply becomes target/xxx/ instead. Acked-by: Laurent Vivier <laurent@vivier.eu> [m68k part] Acked-by: Bastian Koppelmann <kbastian@mail.uni-paderborn.de> [tricore part] Acked-by: Michael Walle <michael@walle.cc> [lm32 part] Acked-by: Cornelia Huck <cornelia.huck@de.ibm.com> [s390x part] Reviewed-by: Christian Borntraeger <borntraeger@de.ibm.com> [s390x part] Acked-by: Eduardo Habkost <ehabkost@redhat.com> [i386 part] Acked-by: Artyom Tarasenko <atar4qemu@gmail.com> [sparc part] Acked-by: Richard Henderson <rth@twiddle.net> [alpha part] Acked-by: Max Filippov <jcmvbkbc@gmail.com> [xtensa part] Reviewed-by: David Gibson <david@gibson.dropbear.id.au> [ppc part] Acked-by: Edgar E. Iglesias <edgar.iglesias@xilinx.com> [cris&microblaze part] Acked-by: Guan Xuetao <gxt@mprc.pku.edu.cn> [unicore32 part] Signed-off-by: Thomas Huth <thuth@redhat.com>
Diffstat (limited to 'target-ppc/kvm.c')
-rw-r--r--target-ppc/kvm.c2674
1 files changed, 0 insertions, 2674 deletions
diff --git a/target-ppc/kvm.c b/target-ppc/kvm.c
deleted file mode 100644
index 9c4834c4fc..0000000000
--- a/target-ppc/kvm.c
+++ /dev/null
@@ -1,2674 +0,0 @@
-/*
- * PowerPC implementation of KVM hooks
- *
- * Copyright IBM Corp. 2007
- * Copyright (C) 2011 Freescale Semiconductor, Inc.
- *
- * Authors:
- * Jerone Young <jyoung5@us.ibm.com>
- * Christian Ehrhardt <ehrhardt@linux.vnet.ibm.com>
- * Hollis Blanchard <hollisb@us.ibm.com>
- *
- * This work is licensed under the terms of the GNU GPL, version 2 or later.
- * See the COPYING file in the top-level directory.
- *
- */
-
-#include "qemu/osdep.h"
-#include <dirent.h>
-#include <sys/ioctl.h>
-#include <sys/vfs.h>
-
-#include <linux/kvm.h>
-
-#include "qemu-common.h"
-#include "qemu/error-report.h"
-#include "cpu.h"
-#include "qemu/timer.h"
-#include "sysemu/sysemu.h"
-#include "sysemu/kvm.h"
-#include "sysemu/numa.h"
-#include "kvm_ppc.h"
-#include "sysemu/cpus.h"
-#include "sysemu/device_tree.h"
-#include "mmu-hash64.h"
-
-#include "hw/sysbus.h"
-#include "hw/ppc/spapr.h"
-#include "hw/ppc/spapr_vio.h"
-#include "hw/ppc/spapr_cpu_core.h"
-#include "hw/ppc/ppc.h"
-#include "sysemu/watchdog.h"
-#include "trace.h"
-#include "exec/gdbstub.h"
-#include "exec/memattrs.h"
-#include "sysemu/hostmem.h"
-#include "qemu/cutils.h"
-#if defined(TARGET_PPC64)
-#include "hw/ppc/spapr_cpu_core.h"
-#endif
-
-//#define DEBUG_KVM
-
-#ifdef DEBUG_KVM
-#define DPRINTF(fmt, ...) \
- do { fprintf(stderr, fmt, ## __VA_ARGS__); } while (0)
-#else
-#define DPRINTF(fmt, ...) \
- do { } while (0)
-#endif
-
-#define PROC_DEVTREE_CPU "/proc/device-tree/cpus/"
-
-const KVMCapabilityInfo kvm_arch_required_capabilities[] = {
- KVM_CAP_LAST_INFO
-};
-
-static int cap_interrupt_unset = false;
-static int cap_interrupt_level = false;
-static int cap_segstate;
-static int cap_booke_sregs;
-static int cap_ppc_smt;
-static int cap_ppc_rma;
-static int cap_spapr_tce;
-static int cap_spapr_multitce;
-static int cap_spapr_vfio;
-static int cap_hior;
-static int cap_one_reg;
-static int cap_epr;
-static int cap_ppc_watchdog;
-static int cap_papr;
-static int cap_htab_fd;
-static int cap_fixup_hcalls;
-static int cap_htm; /* Hardware transactional memory support */
-
-static uint32_t debug_inst_opcode;
-
-/* XXX We have a race condition where we actually have a level triggered
- * interrupt, but the infrastructure can't expose that yet, so the guest
- * takes but ignores it, goes to sleep and never gets notified that there's
- * still an interrupt pending.
- *
- * As a quick workaround, let's just wake up again 20 ms after we injected
- * an interrupt. That way we can assure that we're always reinjecting
- * interrupts in case the guest swallowed them.
- */
-static QEMUTimer *idle_timer;
-
-static void kvm_kick_cpu(void *opaque)
-{
- PowerPCCPU *cpu = opaque;
-
- qemu_cpu_kick(CPU(cpu));
-}
-
-/* Check whether we are running with KVM-PR (instead of KVM-HV). This
- * should only be used for fallback tests - generally we should use
- * explicit capabilities for the features we want, rather than
- * assuming what is/isn't available depending on the KVM variant. */
-static bool kvmppc_is_pr(KVMState *ks)
-{
- /* Assume KVM-PR if the GET_PVINFO capability is available */
- return kvm_check_extension(ks, KVM_CAP_PPC_GET_PVINFO) != 0;
-}
-
-static int kvm_ppc_register_host_cpu_type(void);
-
-int kvm_arch_init(MachineState *ms, KVMState *s)
-{
- cap_interrupt_unset = kvm_check_extension(s, KVM_CAP_PPC_UNSET_IRQ);
- cap_interrupt_level = kvm_check_extension(s, KVM_CAP_PPC_IRQ_LEVEL);
- cap_segstate = kvm_check_extension(s, KVM_CAP_PPC_SEGSTATE);
- cap_booke_sregs = kvm_check_extension(s, KVM_CAP_PPC_BOOKE_SREGS);
- cap_ppc_smt = kvm_check_extension(s, KVM_CAP_PPC_SMT);
- cap_ppc_rma = kvm_check_extension(s, KVM_CAP_PPC_RMA);
- cap_spapr_tce = kvm_check_extension(s, KVM_CAP_SPAPR_TCE);
- cap_spapr_multitce = kvm_check_extension(s, KVM_CAP_SPAPR_MULTITCE);
- cap_spapr_vfio = false;
- cap_one_reg = kvm_check_extension(s, KVM_CAP_ONE_REG);
- cap_hior = kvm_check_extension(s, KVM_CAP_PPC_HIOR);
- cap_epr = kvm_check_extension(s, KVM_CAP_PPC_EPR);
- cap_ppc_watchdog = kvm_check_extension(s, KVM_CAP_PPC_BOOKE_WATCHDOG);
- /* Note: we don't set cap_papr here, because this capability is
- * only activated after this by kvmppc_set_papr() */
- cap_htab_fd = kvm_check_extension(s, KVM_CAP_PPC_HTAB_FD);
- cap_fixup_hcalls = kvm_check_extension(s, KVM_CAP_PPC_FIXUP_HCALL);
- cap_htm = kvm_vm_check_extension(s, KVM_CAP_PPC_HTM);
-
- if (!cap_interrupt_level) {
- fprintf(stderr, "KVM: Couldn't find level irq capability. Expect the "
- "VM to stall at times!\n");
- }
-
- kvm_ppc_register_host_cpu_type();
-
- return 0;
-}
-
-static int kvm_arch_sync_sregs(PowerPCCPU *cpu)
-{
- CPUPPCState *cenv = &cpu->env;
- CPUState *cs = CPU(cpu);
- struct kvm_sregs sregs;
- int ret;
-
- if (cenv->excp_model == POWERPC_EXCP_BOOKE) {
- /* What we're really trying to say is "if we're on BookE, we use
- the native PVR for now". This is the only sane way to check
- it though, so we potentially confuse users that they can run
- BookE guests on BookS. Let's hope nobody dares enough :) */
- return 0;
- } else {
- if (!cap_segstate) {
- fprintf(stderr, "kvm error: missing PVR setting capability\n");
- return -ENOSYS;
- }
- }
-
- ret = kvm_vcpu_ioctl(cs, KVM_GET_SREGS, &sregs);
- if (ret) {
- return ret;
- }
-
- sregs.pvr = cenv->spr[SPR_PVR];
- return kvm_vcpu_ioctl(cs, KVM_SET_SREGS, &sregs);
-}
-
-/* Set up a shared TLB array with KVM */
-static int kvm_booke206_tlb_init(PowerPCCPU *cpu)
-{
- CPUPPCState *env = &cpu->env;
- CPUState *cs = CPU(cpu);
- struct kvm_book3e_206_tlb_params params = {};
- struct kvm_config_tlb cfg = {};
- unsigned int entries = 0;
- int ret, i;
-
- if (!kvm_enabled() ||
- !kvm_check_extension(cs->kvm_state, KVM_CAP_SW_TLB)) {
- return 0;
- }
-
- assert(ARRAY_SIZE(params.tlb_sizes) == BOOKE206_MAX_TLBN);
-
- for (i = 0; i < BOOKE206_MAX_TLBN; i++) {
- params.tlb_sizes[i] = booke206_tlb_size(env, i);
- params.tlb_ways[i] = booke206_tlb_ways(env, i);
- entries += params.tlb_sizes[i];
- }
-
- assert(entries == env->nb_tlb);
- assert(sizeof(struct kvm_book3e_206_tlb_entry) == sizeof(ppcmas_tlb_t));
-
- env->tlb_dirty = true;
-
- cfg.array = (uintptr_t)env->tlb.tlbm;
- cfg.array_len = sizeof(ppcmas_tlb_t) * entries;
- cfg.params = (uintptr_t)&params;
- cfg.mmu_type = KVM_MMU_FSL_BOOKE_NOHV;
-
- ret = kvm_vcpu_enable_cap(cs, KVM_CAP_SW_TLB, 0, (uintptr_t)&cfg);
- if (ret < 0) {
- fprintf(stderr, "%s: couldn't enable KVM_CAP_SW_TLB: %s\n",
- __func__, strerror(-ret));
- return ret;
- }
-
- env->kvm_sw_tlb = true;
- return 0;
-}
-
-
-#if defined(TARGET_PPC64)
-static void kvm_get_fallback_smmu_info(PowerPCCPU *cpu,
- struct kvm_ppc_smmu_info *info)
-{
- CPUPPCState *env = &cpu->env;
- CPUState *cs = CPU(cpu);
-
- memset(info, 0, sizeof(*info));
-
- /* We don't have the new KVM_PPC_GET_SMMU_INFO ioctl, so
- * need to "guess" what the supported page sizes are.
- *
- * For that to work we make a few assumptions:
- *
- * - Check whether we are running "PR" KVM which only supports 4K
- * and 16M pages, but supports them regardless of the backing
- * store characteritics. We also don't support 1T segments.
- *
- * This is safe as if HV KVM ever supports that capability or PR
- * KVM grows supports for more page/segment sizes, those versions
- * will have implemented KVM_CAP_PPC_GET_SMMU_INFO and thus we
- * will not hit this fallback
- *
- * - Else we are running HV KVM. This means we only support page
- * sizes that fit in the backing store. Additionally we only
- * advertize 64K pages if the processor is ARCH 2.06 and we assume
- * P7 encodings for the SLB and hash table. Here too, we assume
- * support for any newer processor will mean a kernel that
- * implements KVM_CAP_PPC_GET_SMMU_INFO and thus doesn't hit
- * this fallback.
- */
- if (kvmppc_is_pr(cs->kvm_state)) {
- /* No flags */
- info->flags = 0;
- info->slb_size = 64;
-
- /* Standard 4k base page size segment */
- info->sps[0].page_shift = 12;
- info->sps[0].slb_enc = 0;
- info->sps[0].enc[0].page_shift = 12;
- info->sps[0].enc[0].pte_enc = 0;
-
- /* Standard 16M large page size segment */
- info->sps[1].page_shift = 24;
- info->sps[1].slb_enc = SLB_VSID_L;
- info->sps[1].enc[0].page_shift = 24;
- info->sps[1].enc[0].pte_enc = 0;
- } else {
- int i = 0;
-
- /* HV KVM has backing store size restrictions */
- info->flags = KVM_PPC_PAGE_SIZES_REAL;
-
- if (env->mmu_model & POWERPC_MMU_1TSEG) {
- info->flags |= KVM_PPC_1T_SEGMENTS;
- }
-
- if (env->mmu_model == POWERPC_MMU_2_06 ||
- env->mmu_model == POWERPC_MMU_2_07) {
- info->slb_size = 32;
- } else {
- info->slb_size = 64;
- }
-
- /* Standard 4k base page size segment */
- info->sps[i].page_shift = 12;
- info->sps[i].slb_enc = 0;
- info->sps[i].enc[0].page_shift = 12;
- info->sps[i].enc[0].pte_enc = 0;
- i++;
-
- /* 64K on MMU 2.06 and later */
- if (env->mmu_model == POWERPC_MMU_2_06 ||
- env->mmu_model == POWERPC_MMU_2_07) {
- info->sps[i].page_shift = 16;
- info->sps[i].slb_enc = 0x110;
- info->sps[i].enc[0].page_shift = 16;
- info->sps[i].enc[0].pte_enc = 1;
- i++;
- }
-
- /* Standard 16M large page size segment */
- info->sps[i].page_shift = 24;
- info->sps[i].slb_enc = SLB_VSID_L;
- info->sps[i].enc[0].page_shift = 24;
- info->sps[i].enc[0].pte_enc = 0;
- }
-}
-
-static void kvm_get_smmu_info(PowerPCCPU *cpu, struct kvm_ppc_smmu_info *info)
-{
- CPUState *cs = CPU(cpu);
- int ret;
-
- if (kvm_check_extension(cs->kvm_state, KVM_CAP_PPC_GET_SMMU_INFO)) {
- ret = kvm_vm_ioctl(cs->kvm_state, KVM_PPC_GET_SMMU_INFO, info);
- if (ret == 0) {
- return;
- }
- }
-
- kvm_get_fallback_smmu_info(cpu, info);
-}
-
-static long gethugepagesize(const char *mem_path)
-{
- struct statfs fs;
- int ret;
-
- do {
- ret = statfs(mem_path, &fs);
- } while (ret != 0 && errno == EINTR);
-
- if (ret != 0) {
- fprintf(stderr, "Couldn't statfs() memory path: %s\n",
- strerror(errno));
- exit(1);
- }
-
-#define HUGETLBFS_MAGIC 0x958458f6
-
- if (fs.f_type != HUGETLBFS_MAGIC) {
- /* Explicit mempath, but it's ordinary pages */
- return getpagesize();
- }
-
- /* It's hugepage, return the huge page size */
- return fs.f_bsize;
-}
-
-/*
- * FIXME TOCTTOU: this iterates over memory backends' mem-path, which
- * may or may not name the same files / on the same filesystem now as
- * when we actually open and map them. Iterate over the file
- * descriptors instead, and use qemu_fd_getpagesize().
- */
-static int find_max_supported_pagesize(Object *obj, void *opaque)
-{
- char *mem_path;
- long *hpsize_min = opaque;
-
- if (object_dynamic_cast(obj, TYPE_MEMORY_BACKEND)) {
- mem_path = object_property_get_str(obj, "mem-path", NULL);
- if (mem_path) {
- long hpsize = gethugepagesize(mem_path);
- if (hpsize < *hpsize_min) {
- *hpsize_min = hpsize;
- }
- } else {
- *hpsize_min = getpagesize();
- }
- }
-
- return 0;
-}
-
-static long getrampagesize(void)
-{
- long hpsize = LONG_MAX;
- long mainrampagesize;
- Object *memdev_root;
-
- if (mem_path) {
- mainrampagesize = gethugepagesize(mem_path);
- } else {
- mainrampagesize = getpagesize();
- }
-
- /* it's possible we have memory-backend objects with
- * hugepage-backed RAM. these may get mapped into system
- * address space via -numa parameters or memory hotplug
- * hooks. we want to take these into account, but we
- * also want to make sure these supported hugepage
- * sizes are applicable across the entire range of memory
- * we may boot from, so we take the min across all
- * backends, and assume normal pages in cases where a
- * backend isn't backed by hugepages.
- */
- memdev_root = object_resolve_path("/objects", NULL);
- if (memdev_root) {
- object_child_foreach(memdev_root, find_max_supported_pagesize, &hpsize);
- }
- if (hpsize == LONG_MAX) {
- /* No additional memory regions found ==> Report main RAM page size */
- return mainrampagesize;
- }
-
- /* If NUMA is disabled or the NUMA nodes are not backed with a
- * memory-backend, then there is at least one node using "normal" RAM,
- * so if its page size is smaller we have got to report that size instead.
- */
- if (hpsize > mainrampagesize &&
- (nb_numa_nodes == 0 || numa_info[0].node_memdev == NULL)) {
- static bool warned;
- if (!warned) {
- error_report("Huge page support disabled (n/a for main memory).");
- warned = true;
- }
- return mainrampagesize;
- }
-
- return hpsize;
-}
-
-static bool kvm_valid_page_size(uint32_t flags, long rampgsize, uint32_t shift)
-{
- if (!(flags & KVM_PPC_PAGE_SIZES_REAL)) {
- return true;
- }
-
- return (1ul << shift) <= rampgsize;
-}
-
-static void kvm_fixup_page_sizes(PowerPCCPU *cpu)
-{
- static struct kvm_ppc_smmu_info smmu_info;
- static bool has_smmu_info;
- CPUPPCState *env = &cpu->env;
- long rampagesize;
- int iq, ik, jq, jk;
- bool has_64k_pages = false;
-
- /* We only handle page sizes for 64-bit server guests for now */
- if (!(env->mmu_model & POWERPC_MMU_64)) {
- return;
- }
-
- /* Collect MMU info from kernel if not already */
- if (!has_smmu_info) {
- kvm_get_smmu_info(cpu, &smmu_info);
- has_smmu_info = true;
- }
-
- rampagesize = getrampagesize();
-
- /* Convert to QEMU form */
- memset(&env->sps, 0, sizeof(env->sps));
-
- /* If we have HV KVM, we need to forbid CI large pages if our
- * host page size is smaller than 64K.
- */
- if (smmu_info.flags & KVM_PPC_PAGE_SIZES_REAL) {
- env->ci_large_pages = getpagesize() >= 0x10000;
- }
-
- /*
- * XXX This loop should be an entry wide AND of the capabilities that
- * the selected CPU has with the capabilities that KVM supports.
- */
- for (ik = iq = 0; ik < KVM_PPC_PAGE_SIZES_MAX_SZ; ik++) {
- struct ppc_one_seg_page_size *qsps = &env->sps.sps[iq];
- struct kvm_ppc_one_seg_page_size *ksps = &smmu_info.sps[ik];
-
- if (!kvm_valid_page_size(smmu_info.flags, rampagesize,
- ksps->page_shift)) {
- continue;
- }
- qsps->page_shift = ksps->page_shift;
- qsps->slb_enc = ksps->slb_enc;
- for (jk = jq = 0; jk < KVM_PPC_PAGE_SIZES_MAX_SZ; jk++) {
- if (!kvm_valid_page_size(smmu_info.flags, rampagesize,
- ksps->enc[jk].page_shift)) {
- continue;
- }
- if (ksps->enc[jk].page_shift == 16) {
- has_64k_pages = true;
- }
- qsps->enc[jq].page_shift = ksps->enc[jk].page_shift;
- qsps->enc[jq].pte_enc = ksps->enc[jk].pte_enc;
- if (++jq >= PPC_PAGE_SIZES_MAX_SZ) {
- break;
- }
- }
- if (++iq >= PPC_PAGE_SIZES_MAX_SZ) {
- break;
- }
- }
- env->slb_nr = smmu_info.slb_size;
- if (!(smmu_info.flags & KVM_PPC_1T_SEGMENTS)) {
- env->mmu_model &= ~POWERPC_MMU_1TSEG;
- }
- if (!has_64k_pages) {
- env->mmu_model &= ~POWERPC_MMU_64K;
- }
-}
-#else /* defined (TARGET_PPC64) */
-
-static inline void kvm_fixup_page_sizes(PowerPCCPU *cpu)
-{
-}
-
-#endif /* !defined (TARGET_PPC64) */
-
-unsigned long kvm_arch_vcpu_id(CPUState *cpu)
-{
- return ppc_get_vcpu_dt_id(POWERPC_CPU(cpu));
-}
-
-/* e500 supports 2 h/w breakpoint and 2 watchpoint.
- * book3s supports only 1 watchpoint, so array size
- * of 4 is sufficient for now.
- */
-#define MAX_HW_BKPTS 4
-
-static struct HWBreakpoint {
- target_ulong addr;
- int type;
-} hw_debug_points[MAX_HW_BKPTS];
-
-static CPUWatchpoint hw_watchpoint;
-
-/* Default there is no breakpoint and watchpoint supported */
-static int max_hw_breakpoint;
-static int max_hw_watchpoint;
-static int nb_hw_breakpoint;
-static int nb_hw_watchpoint;
-
-static void kvmppc_hw_debug_points_init(CPUPPCState *cenv)
-{
- if (cenv->excp_model == POWERPC_EXCP_BOOKE) {
- max_hw_breakpoint = 2;
- max_hw_watchpoint = 2;
- }
-
- if ((max_hw_breakpoint + max_hw_watchpoint) > MAX_HW_BKPTS) {
- fprintf(stderr, "Error initializing h/w breakpoints\n");
- return;
- }
-}
-
-int kvm_arch_init_vcpu(CPUState *cs)
-{
- PowerPCCPU *cpu = POWERPC_CPU(cs);
- CPUPPCState *cenv = &cpu->env;
- int ret;
-
- /* Gather server mmu info from KVM and update the CPU state */
- kvm_fixup_page_sizes(cpu);
-
- /* Synchronize sregs with kvm */
- ret = kvm_arch_sync_sregs(cpu);
- if (ret) {
- if (ret == -EINVAL) {
- error_report("Register sync failed... If you're using kvm-hv.ko,"
- " only \"-cpu host\" is possible");
- }
- return ret;
- }
-
- idle_timer = timer_new_ns(QEMU_CLOCK_VIRTUAL, kvm_kick_cpu, cpu);
-
- switch (cenv->mmu_model) {
- case POWERPC_MMU_BOOKE206:
- /* This target supports access to KVM's guest TLB */
- ret = kvm_booke206_tlb_init(cpu);
- break;
- case POWERPC_MMU_2_07:
- if (!cap_htm && !kvmppc_is_pr(cs->kvm_state)) {
- /* KVM-HV has transactional memory on POWER8 also without the
- * KVM_CAP_PPC_HTM extension, so enable it here instead. */
- cap_htm = true;
- }
- break;
- default:
- break;
- }
-
- kvm_get_one_reg(cs, KVM_REG_PPC_DEBUG_INST, &debug_inst_opcode);
- kvmppc_hw_debug_points_init(cenv);
-
- return ret;
-}
-
-static void kvm_sw_tlb_put(PowerPCCPU *cpu)
-{
- CPUPPCState *env = &cpu->env;
- CPUState *cs = CPU(cpu);
- struct kvm_dirty_tlb dirty_tlb;
- unsigned char *bitmap;
- int ret;
-
- if (!env->kvm_sw_tlb) {
- return;
- }
-
- bitmap = g_malloc((env->nb_tlb + 7) / 8);
- memset(bitmap, 0xFF, (env->nb_tlb + 7) / 8);
-
- dirty_tlb.bitmap = (uintptr_t)bitmap;
- dirty_tlb.num_dirty = env->nb_tlb;
-
- ret = kvm_vcpu_ioctl(cs, KVM_DIRTY_TLB, &dirty_tlb);
- if (ret) {
- fprintf(stderr, "%s: KVM_DIRTY_TLB: %s\n",
- __func__, strerror(-ret));
- }
-
- g_free(bitmap);
-}
-
-static void kvm_get_one_spr(CPUState *cs, uint64_t id, int spr)
-{
- PowerPCCPU *cpu = POWERPC_CPU(cs);
- CPUPPCState *env = &cpu->env;
- union {
- uint32_t u32;
- uint64_t u64;
- } val;
- struct kvm_one_reg reg = {
- .id = id,
- .addr = (uintptr_t) &val,
- };
- int ret;
-
- ret = kvm_vcpu_ioctl(cs, KVM_GET_ONE_REG, &reg);
- if (ret != 0) {
- trace_kvm_failed_spr_get(spr, strerror(errno));
- } else {
- switch (id & KVM_REG_SIZE_MASK) {
- case KVM_REG_SIZE_U32:
- env->spr[spr] = val.u32;
- break;
-
- case KVM_REG_SIZE_U64:
- env->spr[spr] = val.u64;
- break;
-
- default:
- /* Don't handle this size yet */
- abort();
- }
- }
-}
-
-static void kvm_put_one_spr(CPUState *cs, uint64_t id, int spr)
-{
- PowerPCCPU *cpu = POWERPC_CPU(cs);
- CPUPPCState *env = &cpu->env;
- union {
- uint32_t u32;
- uint64_t u64;
- } val;
- struct kvm_one_reg reg = {
- .id = id,
- .addr = (uintptr_t) &val,
- };
- int ret;
-
- switch (id & KVM_REG_SIZE_MASK) {
- case KVM_REG_SIZE_U32:
- val.u32 = env->spr[spr];
- break;
-
- case KVM_REG_SIZE_U64:
- val.u64 = env->spr[spr];
- break;
-
- default:
- /* Don't handle this size yet */
- abort();
- }
-
- ret = kvm_vcpu_ioctl(cs, KVM_SET_ONE_REG, &reg);
- if (ret != 0) {
- trace_kvm_failed_spr_set(spr, strerror(errno));
- }
-}
-
-static int kvm_put_fp(CPUState *cs)
-{
- PowerPCCPU *cpu = POWERPC_CPU(cs);
- CPUPPCState *env = &cpu->env;
- struct kvm_one_reg reg;
- int i;
- int ret;
-
- if (env->insns_flags & PPC_FLOAT) {
- uint64_t fpscr = env->fpscr;
- bool vsx = !!(env->insns_flags2 & PPC2_VSX);
-
- reg.id = KVM_REG_PPC_FPSCR;
- reg.addr = (uintptr_t)&fpscr;
- ret = kvm_vcpu_ioctl(cs, KVM_SET_ONE_REG, &reg);
- if (ret < 0) {
- DPRINTF("Unable to set FPSCR to KVM: %s\n", strerror(errno));
- return ret;
- }
-
- for (i = 0; i < 32; i++) {
- uint64_t vsr[2];
-
-#ifdef HOST_WORDS_BIGENDIAN
- vsr[0] = float64_val(env->fpr[i]);
- vsr[1] = env->vsr[i];
-#else
- vsr[0] = env->vsr[i];
- vsr[1] = float64_val(env->fpr[i]);
-#endif
- reg.addr = (uintptr_t) &vsr;
- reg.id = vsx ? KVM_REG_PPC_VSR(i) : KVM_REG_PPC_FPR(i);
-
- ret = kvm_vcpu_ioctl(cs, KVM_SET_ONE_REG, &reg);
- if (ret < 0) {
- DPRINTF("Unable to set %s%d to KVM: %s\n", vsx ? "VSR" : "FPR",
- i, strerror(errno));
- return ret;
- }
- }
- }
-
- if (env->insns_flags & PPC_ALTIVEC) {
- reg.id = KVM_REG_PPC_VSCR;
- reg.addr = (uintptr_t)&env->vscr;
- ret = kvm_vcpu_ioctl(cs, KVM_SET_ONE_REG, &reg);
- if (ret < 0) {
- DPRINTF("Unable to set VSCR to KVM: %s\n", strerror(errno));
- return ret;
- }
-
- for (i = 0; i < 32; i++) {
- reg.id = KVM_REG_PPC_VR(i);
- reg.addr = (uintptr_t)&env->avr[i];
- ret = kvm_vcpu_ioctl(cs, KVM_SET_ONE_REG, &reg);
- if (ret < 0) {
- DPRINTF("Unable to set VR%d to KVM: %s\n", i, strerror(errno));
- return ret;
- }
- }
- }
-
- return 0;
-}
-
-static int kvm_get_fp(CPUState *cs)
-{
- PowerPCCPU *cpu = POWERPC_CPU(cs);
- CPUPPCState *env = &cpu->env;
- struct kvm_one_reg reg;
- int i;
- int ret;
-
- if (env->insns_flags & PPC_FLOAT) {
- uint64_t fpscr;
- bool vsx = !!(env->insns_flags2 & PPC2_VSX);
-
- reg.id = KVM_REG_PPC_FPSCR;
- reg.addr = (uintptr_t)&fpscr;
- ret = kvm_vcpu_ioctl(cs, KVM_GET_ONE_REG, &reg);
- if (ret < 0) {
- DPRINTF("Unable to get FPSCR from KVM: %s\n", strerror(errno));
- return ret;
- } else {
- env->fpscr = fpscr;
- }
-
- for (i = 0; i < 32; i++) {
- uint64_t vsr[2];
-
- reg.addr = (uintptr_t) &vsr;
- reg.id = vsx ? KVM_REG_PPC_VSR(i) : KVM_REG_PPC_FPR(i);
-
- ret = kvm_vcpu_ioctl(cs, KVM_GET_ONE_REG, &reg);
- if (ret < 0) {
- DPRINTF("Unable to get %s%d from KVM: %s\n",
- vsx ? "VSR" : "FPR", i, strerror(errno));
- return ret;
- } else {
-#ifdef HOST_WORDS_BIGENDIAN
- env->fpr[i] = vsr[0];
- if (vsx) {
- env->vsr[i] = vsr[1];
- }
-#else
- env->fpr[i] = vsr[1];
- if (vsx) {
- env->vsr[i] = vsr[0];
- }
-#endif
- }
- }
- }
-
- if (env->insns_flags & PPC_ALTIVEC) {
- reg.id = KVM_REG_PPC_VSCR;
- reg.addr = (uintptr_t)&env->vscr;
- ret = kvm_vcpu_ioctl(cs, KVM_GET_ONE_REG, &reg);
- if (ret < 0) {
- DPRINTF("Unable to get VSCR from KVM: %s\n", strerror(errno));
- return ret;
- }
-
- for (i = 0; i < 32; i++) {
- reg.id = KVM_REG_PPC_VR(i);
- reg.addr = (uintptr_t)&env->avr[i];
- ret = kvm_vcpu_ioctl(cs, KVM_GET_ONE_REG, &reg);
- if (ret < 0) {
- DPRINTF("Unable to get VR%d from KVM: %s\n",
- i, strerror(errno));
- return ret;
- }
- }
- }
-
- return 0;
-}
-
-#if defined(TARGET_PPC64)
-static int kvm_get_vpa(CPUState *cs)
-{
- PowerPCCPU *cpu = POWERPC_CPU(cs);
- CPUPPCState *env = &cpu->env;
- struct kvm_one_reg reg;
- int ret;
-
- reg.id = KVM_REG_PPC_VPA_ADDR;
- reg.addr = (uintptr_t)&env->vpa_addr;
- ret = kvm_vcpu_ioctl(cs, KVM_GET_ONE_REG, &reg);
- if (ret < 0) {
- DPRINTF("Unable to get VPA address from KVM: %s\n", strerror(errno));
- return ret;
- }
-
- assert((uintptr_t)&env->slb_shadow_size
- == ((uintptr_t)&env->slb_shadow_addr + 8));
- reg.id = KVM_REG_PPC_VPA_SLB;
- reg.addr = (uintptr_t)&env->slb_shadow_addr;
- ret = kvm_vcpu_ioctl(cs, KVM_GET_ONE_REG, &reg);
- if (ret < 0) {
- DPRINTF("Unable to get SLB shadow state from KVM: %s\n",
- strerror(errno));
- return ret;
- }
-
- assert((uintptr_t)&env->dtl_size == ((uintptr_t)&env->dtl_addr + 8));
- reg.id = KVM_REG_PPC_VPA_DTL;
- reg.addr = (uintptr_t)&env->dtl_addr;
- ret = kvm_vcpu_ioctl(cs, KVM_GET_ONE_REG, &reg);
- if (ret < 0) {
- DPRINTF("Unable to get dispatch trace log state from KVM: %s\n",
- strerror(errno));
- return ret;
- }
-
- return 0;
-}
-
-static int kvm_put_vpa(CPUState *cs)
-{
- PowerPCCPU *cpu = POWERPC_CPU(cs);
- CPUPPCState *env = &cpu->env;
- struct kvm_one_reg reg;
- int ret;
-
- /* SLB shadow or DTL can't be registered unless a master VPA is
- * registered. That means when restoring state, if a VPA *is*
- * registered, we need to set that up first. If not, we need to
- * deregister the others before deregistering the master VPA */
- assert(env->vpa_addr || !(env->slb_shadow_addr || env->dtl_addr));
-
- if (env->vpa_addr) {
- reg.id = KVM_REG_PPC_VPA_ADDR;
- reg.addr = (uintptr_t)&env->vpa_addr;
- ret = kvm_vcpu_ioctl(cs, KVM_SET_ONE_REG, &reg);
- if (ret < 0) {
- DPRINTF("Unable to set VPA address to KVM: %s\n", strerror(errno));
- return ret;
- }
- }
-
- assert((uintptr_t)&env->slb_shadow_size
- == ((uintptr_t)&env->slb_shadow_addr + 8));
- reg.id = KVM_REG_PPC_VPA_SLB;
- reg.addr = (uintptr_t)&env->slb_shadow_addr;
- ret = kvm_vcpu_ioctl(cs, KVM_SET_ONE_REG, &reg);
- if (ret < 0) {
- DPRINTF("Unable to set SLB shadow state to KVM: %s\n", strerror(errno));
- return ret;
- }
-
- assert((uintptr_t)&env->dtl_size == ((uintptr_t)&env->dtl_addr + 8));
- reg.id = KVM_REG_PPC_VPA_DTL;
- reg.addr = (uintptr_t)&env->dtl_addr;
- ret = kvm_vcpu_ioctl(cs, KVM_SET_ONE_REG, &reg);
- if (ret < 0) {
- DPRINTF("Unable to set dispatch trace log state to KVM: %s\n",
- strerror(errno));
- return ret;
- }
-
- if (!env->vpa_addr) {
- reg.id = KVM_REG_PPC_VPA_ADDR;
- reg.addr = (uintptr_t)&env->vpa_addr;
- ret = kvm_vcpu_ioctl(cs, KVM_SET_ONE_REG, &reg);
- if (ret < 0) {
- DPRINTF("Unable to set VPA address to KVM: %s\n", strerror(errno));
- return ret;
- }
- }
-
- return 0;
-}
-#endif /* TARGET_PPC64 */
-
-int kvmppc_put_books_sregs(PowerPCCPU *cpu)
-{
- CPUPPCState *env = &cpu->env;
- struct kvm_sregs sregs;
- int i;
-
- sregs.pvr = env->spr[SPR_PVR];
-
- sregs.u.s.sdr1 = env->spr[SPR_SDR1];
-
- /* Sync SLB */
-#ifdef TARGET_PPC64
- for (i = 0; i < ARRAY_SIZE(env->slb); i++) {
- sregs.u.s.ppc64.slb[i].slbe = env->slb[i].esid;
- if (env->slb[i].esid & SLB_ESID_V) {
- sregs.u.s.ppc64.slb[i].slbe |= i;
- }
- sregs.u.s.ppc64.slb[i].slbv = env->slb[i].vsid;
- }
-#endif
-
- /* Sync SRs */
- for (i = 0; i < 16; i++) {
- sregs.u.s.ppc32.sr[i] = env->sr[i];
- }
-
- /* Sync BATs */
- for (i = 0; i < 8; i++) {
- /* Beware. We have to swap upper and lower bits here */
- sregs.u.s.ppc32.dbat[i] = ((uint64_t)env->DBAT[0][i] << 32)
- | env->DBAT[1][i];
- sregs.u.s.ppc32.ibat[i] = ((uint64_t)env->IBAT[0][i] << 32)
- | env->IBAT[1][i];
- }
-
- return kvm_vcpu_ioctl(CPU(cpu), KVM_SET_SREGS, &sregs);
-}
-
-int kvm_arch_put_registers(CPUState *cs, int level)
-{
- PowerPCCPU *cpu = POWERPC_CPU(cs);
- CPUPPCState *env = &cpu->env;
- struct kvm_regs regs;
- int ret;
- int i;
-
- ret = kvm_vcpu_ioctl(cs, KVM_GET_REGS, &regs);
- if (ret < 0) {
- return ret;
- }
-
- regs.ctr = env->ctr;
- regs.lr = env->lr;
- regs.xer = cpu_read_xer(env);
- regs.msr = env->msr;
- regs.pc = env->nip;
-
- regs.srr0 = env->spr[SPR_SRR0];
- regs.srr1 = env->spr[SPR_SRR1];
-
- regs.sprg0 = env->spr[SPR_SPRG0];
- regs.sprg1 = env->spr[SPR_SPRG1];
- regs.sprg2 = env->spr[SPR_SPRG2];
- regs.sprg3 = env->spr[SPR_SPRG3];
- regs.sprg4 = env->spr[SPR_SPRG4];
- regs.sprg5 = env->spr[SPR_SPRG5];
- regs.sprg6 = env->spr[SPR_SPRG6];
- regs.sprg7 = env->spr[SPR_SPRG7];
-
- regs.pid = env->spr[SPR_BOOKE_PID];
-
- for (i = 0;i < 32; i++)
- regs.gpr[i] = env->gpr[i];
-
- regs.cr = 0;
- for (i = 0; i < 8; i++) {
- regs.cr |= (env->crf[i] & 15) << (4 * (7 - i));
- }
-
- ret = kvm_vcpu_ioctl(cs, KVM_SET_REGS, &regs);
- if (ret < 0)
- return ret;
-
- kvm_put_fp(cs);
-
- if (env->tlb_dirty) {
- kvm_sw_tlb_put(cpu);
- env->tlb_dirty = false;
- }
-
- if (cap_segstate && (level >= KVM_PUT_RESET_STATE)) {
- ret = kvmppc_put_books_sregs(cpu);
- if (ret < 0) {
- return ret;
- }
- }
-
- if (cap_hior && (level >= KVM_PUT_RESET_STATE)) {
- kvm_put_one_spr(cs, KVM_REG_PPC_HIOR, SPR_HIOR);
- }
-
- if (cap_one_reg) {
- int i;
-
- /* We deliberately ignore errors here, for kernels which have
- * the ONE_REG calls, but don't support the specific
- * registers, there's a reasonable chance things will still
- * work, at least until we try to migrate. */
- for (i = 0; i < 1024; i++) {
- uint64_t id = env->spr_cb[i].one_reg_id;
-
- if (id != 0) {
- kvm_put_one_spr(cs, id, i);
- }
- }
-
-#ifdef TARGET_PPC64
- if (msr_ts) {
- for (i = 0; i < ARRAY_SIZE(env->tm_gpr); i++) {
- kvm_set_one_reg(cs, KVM_REG_PPC_TM_GPR(i), &env->tm_gpr[i]);
- }
- for (i = 0; i < ARRAY_SIZE(env->tm_vsr); i++) {
- kvm_set_one_reg(cs, KVM_REG_PPC_TM_VSR(i), &env->tm_vsr[i]);
- }
- kvm_set_one_reg(cs, KVM_REG_PPC_TM_CR, &env->tm_cr);
- kvm_set_one_reg(cs, KVM_REG_PPC_TM_LR, &env->tm_lr);
- kvm_set_one_reg(cs, KVM_REG_PPC_TM_CTR, &env->tm_ctr);
- kvm_set_one_reg(cs, KVM_REG_PPC_TM_FPSCR, &env->tm_fpscr);
- kvm_set_one_reg(cs, KVM_REG_PPC_TM_AMR, &env->tm_amr);
- kvm_set_one_reg(cs, KVM_REG_PPC_TM_PPR, &env->tm_ppr);
- kvm_set_one_reg(cs, KVM_REG_PPC_TM_VRSAVE, &env->tm_vrsave);
- kvm_set_one_reg(cs, KVM_REG_PPC_TM_VSCR, &env->tm_vscr);
- kvm_set_one_reg(cs, KVM_REG_PPC_TM_DSCR, &env->tm_dscr);
- kvm_set_one_reg(cs, KVM_REG_PPC_TM_TAR, &env->tm_tar);
- }
-
- if (cap_papr) {
- if (kvm_put_vpa(cs) < 0) {
- DPRINTF("Warning: Unable to set VPA information to KVM\n");
- }
- }
-
- kvm_set_one_reg(cs, KVM_REG_PPC_TB_OFFSET, &env->tb_env->tb_offset);
-#endif /* TARGET_PPC64 */
- }
-
- return ret;
-}
-
-static void kvm_sync_excp(CPUPPCState *env, int vector, int ivor)
-{
- env->excp_vectors[vector] = env->spr[ivor] + env->spr[SPR_BOOKE_IVPR];
-}
-
-static int kvmppc_get_booke_sregs(PowerPCCPU *cpu)
-{
- CPUPPCState *env = &cpu->env;
- struct kvm_sregs sregs;
- int ret;
-
- ret = kvm_vcpu_ioctl(CPU(cpu), KVM_GET_SREGS, &sregs);
- if (ret < 0) {
- return ret;
- }
-
- if (sregs.u.e.features & KVM_SREGS_E_BASE) {
- env->spr[SPR_BOOKE_CSRR0] = sregs.u.e.csrr0;
- env->spr[SPR_BOOKE_CSRR1] = sregs.u.e.csrr1;
- env->spr[SPR_BOOKE_ESR] = sregs.u.e.esr;
- env->spr[SPR_BOOKE_DEAR] = sregs.u.e.dear;
- env->spr[SPR_BOOKE_MCSR] = sregs.u.e.mcsr;
- env->spr[SPR_BOOKE_TSR] = sregs.u.e.tsr;
- env->spr[SPR_BOOKE_TCR] = sregs.u.e.tcr;
- env->spr[SPR_DECR] = sregs.u.e.dec;
- env->spr[SPR_TBL] = sregs.u.e.tb & 0xffffffff;
- env->spr[SPR_TBU] = sregs.u.e.tb >> 32;
- env->spr[SPR_VRSAVE] = sregs.u.e.vrsave;
- }
-
- if (sregs.u.e.features & KVM_SREGS_E_ARCH206) {
- env->spr[SPR_BOOKE_PIR] = sregs.u.e.pir;
- env->spr[SPR_BOOKE_MCSRR0] = sregs.u.e.mcsrr0;
- env->spr[SPR_BOOKE_MCSRR1] = sregs.u.e.mcsrr1;
- env->spr[SPR_BOOKE_DECAR] = sregs.u.e.decar;
- env->spr[SPR_BOOKE_IVPR] = sregs.u.e.ivpr;
- }
-
- if (sregs.u.e.features & KVM_SREGS_E_64) {
- env->spr[SPR_BOOKE_EPCR] = sregs.u.e.epcr;
- }
-
- if (sregs.u.e.features & KVM_SREGS_E_SPRG8) {
- env->spr[SPR_BOOKE_SPRG8] = sregs.u.e.sprg8;
- }
-
- if (sregs.u.e.features & KVM_SREGS_E_IVOR) {
- env->spr[SPR_BOOKE_IVOR0] = sregs.u.e.ivor_low[0];
- kvm_sync_excp(env, POWERPC_EXCP_CRITICAL, SPR_BOOKE_IVOR0);
- env->spr[SPR_BOOKE_IVOR1] = sregs.u.e.ivor_low[1];
- kvm_sync_excp(env, POWERPC_EXCP_MCHECK, SPR_BOOKE_IVOR1);
- env->spr[SPR_BOOKE_IVOR2] = sregs.u.e.ivor_low[2];
- kvm_sync_excp(env, POWERPC_EXCP_DSI, SPR_BOOKE_IVOR2);
- env->spr[SPR_BOOKE_IVOR3] = sregs.u.e.ivor_low[3];
- kvm_sync_excp(env, POWERPC_EXCP_ISI, SPR_BOOKE_IVOR3);
- env->spr[SPR_BOOKE_IVOR4] = sregs.u.e.ivor_low[4];
- kvm_sync_excp(env, POWERPC_EXCP_EXTERNAL, SPR_BOOKE_IVOR4);
- env->spr[SPR_BOOKE_IVOR5] = sregs.u.e.ivor_low[5];
- kvm_sync_excp(env, POWERPC_EXCP_ALIGN, SPR_BOOKE_IVOR5);
- env->spr[SPR_BOOKE_IVOR6] = sregs.u.e.ivor_low[6];
- kvm_sync_excp(env, POWERPC_EXCP_PROGRAM, SPR_BOOKE_IVOR6);
- env->spr[SPR_BOOKE_IVOR7] = sregs.u.e.ivor_low[7];
- kvm_sync_excp(env, POWERPC_EXCP_FPU, SPR_BOOKE_IVOR7);
- env->spr[SPR_BOOKE_IVOR8] = sregs.u.e.ivor_low[8];
- kvm_sync_excp(env, POWERPC_EXCP_SYSCALL, SPR_BOOKE_IVOR8);
- env->spr[SPR_BOOKE_IVOR9] = sregs.u.e.ivor_low[9];
- kvm_sync_excp(env, POWERPC_EXCP_APU, SPR_BOOKE_IVOR9);
- env->spr[SPR_BOOKE_IVOR10] = sregs.u.e.ivor_low[10];
- kvm_sync_excp(env, POWERPC_EXCP_DECR, SPR_BOOKE_IVOR10);
- env->spr[SPR_BOOKE_IVOR11] = sregs.u.e.ivor_low[11];
- kvm_sync_excp(env, POWERPC_EXCP_FIT, SPR_BOOKE_IVOR11);
- env->spr[SPR_BOOKE_IVOR12] = sregs.u.e.ivor_low[12];
- kvm_sync_excp(env, POWERPC_EXCP_WDT, SPR_BOOKE_IVOR12);
- env->spr[SPR_BOOKE_IVOR13] = sregs.u.e.ivor_low[13];
- kvm_sync_excp(env, POWERPC_EXCP_DTLB, SPR_BOOKE_IVOR13);
- env->spr[SPR_BOOKE_IVOR14] = sregs.u.e.ivor_low[14];
- kvm_sync_excp(env, POWERPC_EXCP_ITLB, SPR_BOOKE_IVOR14);
- env->spr[SPR_BOOKE_IVOR15] = sregs.u.e.ivor_low[15];
- kvm_sync_excp(env, POWERPC_EXCP_DEBUG, SPR_BOOKE_IVOR15);
-
- if (sregs.u.e.features & KVM_SREGS_E_SPE) {
- env->spr[SPR_BOOKE_IVOR32] = sregs.u.e.ivor_high[0];
- kvm_sync_excp(env, POWERPC_EXCP_SPEU, SPR_BOOKE_IVOR32);
- env->spr[SPR_BOOKE_IVOR33] = sregs.u.e.ivor_high[1];
- kvm_sync_excp(env, POWERPC_EXCP_EFPDI, SPR_BOOKE_IVOR33);
- env->spr[SPR_BOOKE_IVOR34] = sregs.u.e.ivor_high[2];
- kvm_sync_excp(env, POWERPC_EXCP_EFPRI, SPR_BOOKE_IVOR34);
- }
-
- if (sregs.u.e.features & KVM_SREGS_E_PM) {
- env->spr[SPR_BOOKE_IVOR35] = sregs.u.e.ivor_high[3];
- kvm_sync_excp(env, POWERPC_EXCP_EPERFM, SPR_BOOKE_IVOR35);
- }
-
- if (sregs.u.e.features & KVM_SREGS_E_PC) {
- env->spr[SPR_BOOKE_IVOR36] = sregs.u.e.ivor_high[4];
- kvm_sync_excp(env, POWERPC_EXCP_DOORI, SPR_BOOKE_IVOR36);
- env->spr[SPR_BOOKE_IVOR37] = sregs.u.e.ivor_high[5];
- kvm_sync_excp(env, POWERPC_EXCP_DOORCI, SPR_BOOKE_IVOR37);
- }
- }
-
- if (sregs.u.e.features & KVM_SREGS_E_ARCH206_MMU) {
- env->spr[SPR_BOOKE_MAS0] = sregs.u.e.mas0;
- env->spr[SPR_BOOKE_MAS1] = sregs.u.e.mas1;
- env->spr[SPR_BOOKE_MAS2] = sregs.u.e.mas2;
- env->spr[SPR_BOOKE_MAS3] = sregs.u.e.mas7_3 & 0xffffffff;
- env->spr[SPR_BOOKE_MAS4] = sregs.u.e.mas4;
- env->spr[SPR_BOOKE_MAS6] = sregs.u.e.mas6;
- env->spr[SPR_BOOKE_MAS7] = sregs.u.e.mas7_3 >> 32;
- env->spr[SPR_MMUCFG] = sregs.u.e.mmucfg;
- env->spr[SPR_BOOKE_TLB0CFG] = sregs.u.e.tlbcfg[0];
- env->spr[SPR_BOOKE_TLB1CFG] = sregs.u.e.tlbcfg[1];
- }
-
- if (sregs.u.e.features & KVM_SREGS_EXP) {
- env->spr[SPR_BOOKE_EPR] = sregs.u.e.epr;
- }
-
- if (sregs.u.e.features & KVM_SREGS_E_PD) {
- env->spr[SPR_BOOKE_EPLC] = sregs.u.e.eplc;
- env->spr[SPR_BOOKE_EPSC] = sregs.u.e.epsc;
- }
-
- if (sregs.u.e.impl_id == KVM_SREGS_E_IMPL_FSL) {
- env->spr[SPR_E500_SVR] = sregs.u.e.impl.fsl.svr;
- env->spr[SPR_Exxx_MCAR] = sregs.u.e.impl.fsl.mcar;
- env->spr[SPR_HID0] = sregs.u.e.impl.fsl.hid0;
-
- if (sregs.u.e.impl.fsl.features & KVM_SREGS_E_FSL_PIDn) {
- env->spr[SPR_BOOKE_PID1] = sregs.u.e.impl.fsl.pid1;
- env->spr[SPR_BOOKE_PID2] = sregs.u.e.impl.fsl.pid2;
- }
- }
-
- return 0;
-}
-
-static int kvmppc_get_books_sregs(PowerPCCPU *cpu)
-{
- CPUPPCState *env = &cpu->env;
- struct kvm_sregs sregs;
- int ret;
- int i;
-
- ret = kvm_vcpu_ioctl(CPU(cpu), KVM_GET_SREGS, &sregs);
- if (ret < 0) {
- return ret;
- }
-
- if (!env->external_htab) {
- ppc_store_sdr1(env, sregs.u.s.sdr1);
- }
-
- /* Sync SLB */
-#ifdef TARGET_PPC64
- /*
- * The packed SLB array we get from KVM_GET_SREGS only contains
- * information about valid entries. So we flush our internal copy
- * to get rid of stale ones, then put all valid SLB entries back
- * in.
- */
- memset(env->slb, 0, sizeof(env->slb));
- for (i = 0; i < ARRAY_SIZE(env->slb); i++) {
- target_ulong rb = sregs.u.s.ppc64.slb[i].slbe;
- target_ulong rs = sregs.u.s.ppc64.slb[i].slbv;
- /*
- * Only restore valid entries
- */
- if (rb & SLB_ESID_V) {
- ppc_store_slb(cpu, rb & 0xfff, rb & ~0xfffULL, rs);
- }
- }
-#endif
-
- /* Sync SRs */
- for (i = 0; i < 16; i++) {
- env->sr[i] = sregs.u.s.ppc32.sr[i];
- }
-
- /* Sync BATs */
- for (i = 0; i < 8; i++) {
- env->DBAT[0][i] = sregs.u.s.ppc32.dbat[i] & 0xffffffff;
- env->DBAT[1][i] = sregs.u.s.ppc32.dbat[i] >> 32;
- env->IBAT[0][i] = sregs.u.s.ppc32.ibat[i] & 0xffffffff;
- env->IBAT[1][i] = sregs.u.s.ppc32.ibat[i] >> 32;
- }
-
- return 0;
-}
-
-int kvm_arch_get_registers(CPUState *cs)
-{
- PowerPCCPU *cpu = POWERPC_CPU(cs);
- CPUPPCState *env = &cpu->env;
- struct kvm_regs regs;
- uint32_t cr;
- int i, ret;
-
- ret = kvm_vcpu_ioctl(cs, KVM_GET_REGS, &regs);
- if (ret < 0)
- return ret;
-
- cr = regs.cr;
- for (i = 7; i >= 0; i--) {
- env->crf[i] = cr & 15;
- cr >>= 4;
- }
-
- env->ctr = regs.ctr;
- env->lr = regs.lr;
- cpu_write_xer(env, regs.xer);
- env->msr = regs.msr;
- env->nip = regs.pc;
-
- env->spr[SPR_SRR0] = regs.srr0;
- env->spr[SPR_SRR1] = regs.srr1;
-
- env->spr[SPR_SPRG0] = regs.sprg0;
- env->spr[SPR_SPRG1] = regs.sprg1;
- env->spr[SPR_SPRG2] = regs.sprg2;
- env->spr[SPR_SPRG3] = regs.sprg3;
- env->spr[SPR_SPRG4] = regs.sprg4;
- env->spr[SPR_SPRG5] = regs.sprg5;
- env->spr[SPR_SPRG6] = regs.sprg6;
- env->spr[SPR_SPRG7] = regs.sprg7;
-
- env->spr[SPR_BOOKE_PID] = regs.pid;
-
- for (i = 0;i < 32; i++)
- env->gpr[i] = regs.gpr[i];
-
- kvm_get_fp(cs);
-
- if (cap_booke_sregs) {
- ret = kvmppc_get_booke_sregs(cpu);
- if (ret < 0) {
- return ret;
- }
- }
-
- if (cap_segstate) {
- ret = kvmppc_get_books_sregs(cpu);
- if (ret < 0) {
- return ret;
- }
- }
-
- if (cap_hior) {
- kvm_get_one_spr(cs, KVM_REG_PPC_HIOR, SPR_HIOR);
- }
-
- if (cap_one_reg) {
- int i;
-
- /* We deliberately ignore errors here, for kernels which have
- * the ONE_REG calls, but don't support the specific
- * registers, there's a reasonable chance things will still
- * work, at least until we try to migrate. */
- for (i = 0; i < 1024; i++) {
- uint64_t id = env->spr_cb[i].one_reg_id;
-
- if (id != 0) {
- kvm_get_one_spr(cs, id, i);
- }
- }
-
-#ifdef TARGET_PPC64
- if (msr_ts) {
- for (i = 0; i < ARRAY_SIZE(env->tm_gpr); i++) {
- kvm_get_one_reg(cs, KVM_REG_PPC_TM_GPR(i), &env->tm_gpr[i]);
- }
- for (i = 0; i < ARRAY_SIZE(env->tm_vsr); i++) {
- kvm_get_one_reg(cs, KVM_REG_PPC_TM_VSR(i), &env->tm_vsr[i]);
- }
- kvm_get_one_reg(cs, KVM_REG_PPC_TM_CR, &env->tm_cr);
- kvm_get_one_reg(cs, KVM_REG_PPC_TM_LR, &env->tm_lr);
- kvm_get_one_reg(cs, KVM_REG_PPC_TM_CTR, &env->tm_ctr);
- kvm_get_one_reg(cs, KVM_REG_PPC_TM_FPSCR, &env->tm_fpscr);
- kvm_get_one_reg(cs, KVM_REG_PPC_TM_AMR, &env->tm_amr);
- kvm_get_one_reg(cs, KVM_REG_PPC_TM_PPR, &env->tm_ppr);
- kvm_get_one_reg(cs, KVM_REG_PPC_TM_VRSAVE, &env->tm_vrsave);
- kvm_get_one_reg(cs, KVM_REG_PPC_TM_VSCR, &env->tm_vscr);
- kvm_get_one_reg(cs, KVM_REG_PPC_TM_DSCR, &env->tm_dscr);
- kvm_get_one_reg(cs, KVM_REG_PPC_TM_TAR, &env->tm_tar);
- }
-
- if (cap_papr) {
- if (kvm_get_vpa(cs) < 0) {
- DPRINTF("Warning: Unable to get VPA information from KVM\n");
- }
- }
-
- kvm_get_one_reg(cs, KVM_REG_PPC_TB_OFFSET, &env->tb_env->tb_offset);
-#endif
- }
-
- return 0;
-}
-
-int kvmppc_set_interrupt(PowerPCCPU *cpu, int irq, int level)
-{
- unsigned virq = level ? KVM_INTERRUPT_SET_LEVEL : KVM_INTERRUPT_UNSET;
-
- if (irq != PPC_INTERRUPT_EXT) {
- return 0;
- }
-
- if (!kvm_enabled() || !cap_interrupt_unset || !cap_interrupt_level) {
- return 0;
- }
-
- kvm_vcpu_ioctl(CPU(cpu), KVM_INTERRUPT, &virq);
-
- return 0;
-}
-
-#if defined(TARGET_PPCEMB)
-#define PPC_INPUT_INT PPC40x_INPUT_INT
-#elif defined(TARGET_PPC64)
-#define PPC_INPUT_INT PPC970_INPUT_INT
-#else
-#define PPC_INPUT_INT PPC6xx_INPUT_INT
-#endif
-
-void kvm_arch_pre_run(CPUState *cs, struct kvm_run *run)
-{
- PowerPCCPU *cpu = POWERPC_CPU(cs);
- CPUPPCState *env = &cpu->env;
- int r;
- unsigned irq;
-
- qemu_mutex_lock_iothread();
-
- /* PowerPC QEMU tracks the various core input pins (interrupt, critical
- * interrupt, reset, etc) in PPC-specific env->irq_input_state. */
- if (!cap_interrupt_level &&
- run->ready_for_interrupt_injection &&
- (cs->interrupt_request & CPU_INTERRUPT_HARD) &&
- (env->irq_input_state & (1<<PPC_INPUT_INT)))
- {
- /* For now KVM disregards the 'irq' argument. However, in the
- * future KVM could cache it in-kernel to avoid a heavyweight exit
- * when reading the UIC.
- */
- irq = KVM_INTERRUPT_SET;
-
- DPRINTF("injected interrupt %d\n", irq);
- r = kvm_vcpu_ioctl(cs, KVM_INTERRUPT, &irq);
- if (r < 0) {
- printf("cpu %d fail inject %x\n", cs->cpu_index, irq);
- }
-
- /* Always wake up soon in case the interrupt was level based */
- timer_mod(idle_timer, qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL) +
- (NANOSECONDS_PER_SECOND / 50));
- }
-
- /* We don't know if there are more interrupts pending after this. However,
- * the guest will return to userspace in the course of handling this one
- * anyways, so we will get a chance to deliver the rest. */
-
- qemu_mutex_unlock_iothread();
-}
-
-MemTxAttrs kvm_arch_post_run(CPUState *cs, struct kvm_run *run)
-{
- return MEMTXATTRS_UNSPECIFIED;
-}
-
-int kvm_arch_process_async_events(CPUState *cs)
-{
- return cs->halted;
-}
-
-static int kvmppc_handle_halt(PowerPCCPU *cpu)
-{
- CPUState *cs = CPU(cpu);
- CPUPPCState *env = &cpu->env;
-
- if (!(cs->interrupt_request & CPU_INTERRUPT_HARD) && (msr_ee)) {
- cs->halted = 1;
- cs->exception_index = EXCP_HLT;
- }
-
- return 0;
-}
-
-/* map dcr access to existing qemu dcr emulation */
-static int kvmppc_handle_dcr_read(CPUPPCState *env, uint32_t dcrn, uint32_t *data)
-{
- if (ppc_dcr_read(env->dcr_env, dcrn, data) < 0)
- fprintf(stderr, "Read to unhandled DCR (0x%x)\n", dcrn);
-
- return 0;
-}
-
-static int kvmppc_handle_dcr_write(CPUPPCState *env, uint32_t dcrn, uint32_t data)
-{
- if (ppc_dcr_write(env->dcr_env, dcrn, data) < 0)
- fprintf(stderr, "Write to unhandled DCR (0x%x)\n", dcrn);
-
- return 0;
-}
-
-int kvm_arch_insert_sw_breakpoint(CPUState *cs, struct kvm_sw_breakpoint *bp)
-{
- /* Mixed endian case is not handled */
- uint32_t sc = debug_inst_opcode;
-
- if (cpu_memory_rw_debug(cs, bp->pc, (uint8_t *)&bp->saved_insn,
- sizeof(sc), 0) ||
- cpu_memory_rw_debug(cs, bp->pc, (uint8_t *)&sc, sizeof(sc), 1)) {
- return -EINVAL;
- }
-
- return 0;
-}
-
-int kvm_arch_remove_sw_breakpoint(CPUState *cs, struct kvm_sw_breakpoint *bp)
-{
- uint32_t sc;
-
- if (cpu_memory_rw_debug(cs, bp->pc, (uint8_t *)&sc, sizeof(sc), 0) ||
- sc != debug_inst_opcode ||
- cpu_memory_rw_debug(cs, bp->pc, (uint8_t *)&bp->saved_insn,
- sizeof(sc), 1)) {
- return -EINVAL;
- }
-
- return 0;
-}
-
-static int find_hw_breakpoint(target_ulong addr, int type)
-{
- int n;
-
- assert((nb_hw_breakpoint + nb_hw_watchpoint)
- <= ARRAY_SIZE(hw_debug_points));
-
- for (n = 0; n < nb_hw_breakpoint + nb_hw_watchpoint; n++) {
- if (hw_debug_points[n].addr == addr &&
- hw_debug_points[n].type == type) {
- return n;
- }
- }
-
- return -1;
-}
-
-static int find_hw_watchpoint(target_ulong addr, int *flag)
-{
- int n;
-
- n = find_hw_breakpoint(addr, GDB_WATCHPOINT_ACCESS);
- if (n >= 0) {
- *flag = BP_MEM_ACCESS;
- return n;
- }
-
- n = find_hw_breakpoint(addr, GDB_WATCHPOINT_WRITE);
- if (n >= 0) {
- *flag = BP_MEM_WRITE;
- return n;
- }
-
- n = find_hw_breakpoint(addr, GDB_WATCHPOINT_READ);
- if (n >= 0) {
- *flag = BP_MEM_READ;
- return n;
- }
-
- return -1;
-}
-
-int kvm_arch_insert_hw_breakpoint(target_ulong addr,
- target_ulong len, int type)
-{
- if ((nb_hw_breakpoint + nb_hw_watchpoint) >= ARRAY_SIZE(hw_debug_points)) {
- return -ENOBUFS;
- }
-
- hw_debug_points[nb_hw_breakpoint + nb_hw_watchpoint].addr = addr;
- hw_debug_points[nb_hw_breakpoint + nb_hw_watchpoint].type = type;
-
- switch (type) {
- case GDB_BREAKPOINT_HW:
- if (nb_hw_breakpoint >= max_hw_breakpoint) {
- return -ENOBUFS;
- }
-
- if (find_hw_breakpoint(addr, type) >= 0) {
- return -EEXIST;
- }
-
- nb_hw_breakpoint++;
- break;
-
- case GDB_WATCHPOINT_WRITE:
- case GDB_WATCHPOINT_READ:
- case GDB_WATCHPOINT_ACCESS:
- if (nb_hw_watchpoint >= max_hw_watchpoint) {
- return -ENOBUFS;
- }
-
- if (find_hw_breakpoint(addr, type) >= 0) {
- return -EEXIST;
- }
-
- nb_hw_watchpoint++;
- break;
-
- default:
- return -ENOSYS;
- }
-
- return 0;
-}
-
-int kvm_arch_remove_hw_breakpoint(target_ulong addr,
- target_ulong len, int type)
-{
- int n;
-
- n = find_hw_breakpoint(addr, type);
- if (n < 0) {
- return -ENOENT;
- }
-
- switch (type) {
- case GDB_BREAKPOINT_HW:
- nb_hw_breakpoint--;
- break;
-
- case GDB_WATCHPOINT_WRITE:
- case GDB_WATCHPOINT_READ:
- case GDB_WATCHPOINT_ACCESS:
- nb_hw_watchpoint--;
- break;
-
- default:
- return -ENOSYS;
- }
- hw_debug_points[n] = hw_debug_points[nb_hw_breakpoint + nb_hw_watchpoint];
-
- return 0;
-}
-
-void kvm_arch_remove_all_hw_breakpoints(void)
-{
- nb_hw_breakpoint = nb_hw_watchpoint = 0;
-}
-
-void kvm_arch_update_guest_debug(CPUState *cs, struct kvm_guest_debug *dbg)
-{
- int n;
-
- /* Software Breakpoint updates */
- if (kvm_sw_breakpoints_active(cs)) {
- dbg->control |= KVM_GUESTDBG_ENABLE | KVM_GUESTDBG_USE_SW_BP;
- }
-
- assert((nb_hw_breakpoint + nb_hw_watchpoint)
- <= ARRAY_SIZE(hw_debug_points));
- assert((nb_hw_breakpoint + nb_hw_watchpoint) <= ARRAY_SIZE(dbg->arch.bp));
-
- if (nb_hw_breakpoint + nb_hw_watchpoint > 0) {
- dbg->control |= KVM_GUESTDBG_ENABLE | KVM_GUESTDBG_USE_HW_BP;
- memset(dbg->arch.bp, 0, sizeof(dbg->arch.bp));
- for (n = 0; n < nb_hw_breakpoint + nb_hw_watchpoint; n++) {
- switch (hw_debug_points[n].type) {
- case GDB_BREAKPOINT_HW:
- dbg->arch.bp[n].type = KVMPPC_DEBUG_BREAKPOINT;
- break;
- case GDB_WATCHPOINT_WRITE:
- dbg->arch.bp[n].type = KVMPPC_DEBUG_WATCH_WRITE;
- break;
- case GDB_WATCHPOINT_READ:
- dbg->arch.bp[n].type = KVMPPC_DEBUG_WATCH_READ;
- break;
- case GDB_WATCHPOINT_ACCESS:
- dbg->arch.bp[n].type = KVMPPC_DEBUG_WATCH_WRITE |
- KVMPPC_DEBUG_WATCH_READ;
- break;
- default:
- cpu_abort(cs, "Unsupported breakpoint type\n");
- }
- dbg->arch.bp[n].addr = hw_debug_points[n].addr;
- }
- }
-}
-
-static int kvm_handle_debug(PowerPCCPU *cpu, struct kvm_run *run)
-{
- CPUState *cs = CPU(cpu);
- CPUPPCState *env = &cpu->env;
- struct kvm_debug_exit_arch *arch_info = &run->debug.arch;
- int handle = 0;
- int n;
- int flag = 0;
-
- if (cs->singlestep_enabled) {
- handle = 1;
- } else if (arch_info->status) {
- if (nb_hw_breakpoint + nb_hw_watchpoint > 0) {
- if (arch_info->status & KVMPPC_DEBUG_BREAKPOINT) {
- n = find_hw_breakpoint(arch_info->address, GDB_BREAKPOINT_HW);
- if (n >= 0) {
- handle = 1;
- }
- } else if (arch_info->status & (KVMPPC_DEBUG_WATCH_READ |
- KVMPPC_DEBUG_WATCH_WRITE)) {
- n = find_hw_watchpoint(arch_info->address, &flag);
- if (n >= 0) {
- handle = 1;
- cs->watchpoint_hit = &hw_watchpoint;
- hw_watchpoint.vaddr = hw_debug_points[n].addr;
- hw_watchpoint.flags = flag;
- }
- }
- }
- } else if (kvm_find_sw_breakpoint(cs, arch_info->address)) {
- handle = 1;
- } else {
- /* QEMU is not able to handle debug exception, so inject
- * program exception to guest;
- * Yes program exception NOT debug exception !!
- * When QEMU is using debug resources then debug exception must
- * be always set. To achieve this we set MSR_DE and also set
- * MSRP_DEP so guest cannot change MSR_DE.
- * When emulating debug resource for guest we want guest
- * to control MSR_DE (enable/disable debug interrupt on need).
- * Supporting both configurations are NOT possible.
- * So the result is that we cannot share debug resources
- * between QEMU and Guest on BOOKE architecture.
- * In the current design QEMU gets the priority over guest,
- * this means that if QEMU is using debug resources then guest
- * cannot use them;
- * For software breakpoint QEMU uses a privileged instruction;
- * So there cannot be any reason that we are here for guest
- * set debug exception, only possibility is guest executed a
- * privileged / illegal instruction and that's why we are
- * injecting a program interrupt.
- */
-
- cpu_synchronize_state(cs);
- /* env->nip is PC, so increment this by 4 to use
- * ppc_cpu_do_interrupt(), which set srr0 = env->nip - 4.
- */
- env->nip += 4;
- cs->exception_index = POWERPC_EXCP_PROGRAM;
- env->error_code = POWERPC_EXCP_INVAL;
- ppc_cpu_do_interrupt(cs);
- }
-
- return handle;
-}
-
-int kvm_arch_handle_exit(CPUState *cs, struct kvm_run *run)
-{
- PowerPCCPU *cpu = POWERPC_CPU(cs);
- CPUPPCState *env = &cpu->env;
- int ret;
-
- qemu_mutex_lock_iothread();
-
- switch (run->exit_reason) {
- case KVM_EXIT_DCR:
- if (run->dcr.is_write) {
- DPRINTF("handle dcr write\n");
- ret = kvmppc_handle_dcr_write(env, run->dcr.dcrn, run->dcr.data);
- } else {
- DPRINTF("handle dcr read\n");
- ret = kvmppc_handle_dcr_read(env, run->dcr.dcrn, &run->dcr.data);
- }
- break;
- case KVM_EXIT_HLT:
- DPRINTF("handle halt\n");
- ret = kvmppc_handle_halt(cpu);
- break;
-#if defined(TARGET_PPC64)
- case KVM_EXIT_PAPR_HCALL:
- DPRINTF("handle PAPR hypercall\n");
- run->papr_hcall.ret = spapr_hypercall(cpu,
- run->papr_hcall.nr,
- run->papr_hcall.args);
- ret = 0;
- break;
-#endif
- case KVM_EXIT_EPR:
- DPRINTF("handle epr\n");
- run->epr.epr = ldl_phys(cs->as, env->mpic_iack);
- ret = 0;
- break;
- case KVM_EXIT_WATCHDOG:
- DPRINTF("handle watchdog expiry\n");
- watchdog_perform_action();
- ret = 0;
- break;
-
- case KVM_EXIT_DEBUG:
- DPRINTF("handle debug exception\n");
- if (kvm_handle_debug(cpu, run)) {
- ret = EXCP_DEBUG;
- break;
- }
- /* re-enter, this exception was guest-internal */
- ret = 0;
- break;
-
- default:
- fprintf(stderr, "KVM: unknown exit reason %d\n", run->exit_reason);
- ret = -1;
- break;
- }
-
- qemu_mutex_unlock_iothread();
- return ret;
-}
-
-int kvmppc_or_tsr_bits(PowerPCCPU *cpu, uint32_t tsr_bits)
-{
- CPUState *cs = CPU(cpu);
- uint32_t bits = tsr_bits;
- struct kvm_one_reg reg = {
- .id = KVM_REG_PPC_OR_TSR,
- .addr = (uintptr_t) &bits,
- };
-
- return kvm_vcpu_ioctl(cs, KVM_SET_ONE_REG, &reg);
-}
-
-int kvmppc_clear_tsr_bits(PowerPCCPU *cpu, uint32_t tsr_bits)
-{
-
- CPUState *cs = CPU(cpu);
- uint32_t bits = tsr_bits;
- struct kvm_one_reg reg = {
- .id = KVM_REG_PPC_CLEAR_TSR,
- .addr = (uintptr_t) &bits,
- };
-
- return kvm_vcpu_ioctl(cs, KVM_SET_ONE_REG, &reg);
-}
-
-int kvmppc_set_tcr(PowerPCCPU *cpu)
-{
- CPUState *cs = CPU(cpu);
- CPUPPCState *env = &cpu->env;
- uint32_t tcr = env->spr[SPR_BOOKE_TCR];
-
- struct kvm_one_reg reg = {
- .id = KVM_REG_PPC_TCR,
- .addr = (uintptr_t) &tcr,
- };
-
- return kvm_vcpu_ioctl(cs, KVM_SET_ONE_REG, &reg);
-}
-
-int kvmppc_booke_watchdog_enable(PowerPCCPU *cpu)
-{
- CPUState *cs = CPU(cpu);
- int ret;
-
- if (!kvm_enabled()) {
- return -1;
- }
-
- if (!cap_ppc_watchdog) {
- printf("warning: KVM does not support watchdog");
- return -1;
- }
-
- ret = kvm_vcpu_enable_cap(cs, KVM_CAP_PPC_BOOKE_WATCHDOG, 0);
- if (ret < 0) {
- fprintf(stderr, "%s: couldn't enable KVM_CAP_PPC_BOOKE_WATCHDOG: %s\n",
- __func__, strerror(-ret));
- return ret;
- }
-
- return ret;
-}
-
-static int read_cpuinfo(const char *field, char *value, int len)
-{
- FILE *f;
- int ret = -1;
- int field_len = strlen(field);
- char line[512];
-
- f = fopen("/proc/cpuinfo", "r");
- if (!f) {
- return -1;
- }
-
- do {
- if (!fgets(line, sizeof(line), f)) {
- break;
- }
- if (!strncmp(line, field, field_len)) {
- pstrcpy(value, len, line);
- ret = 0;
- break;
- }
- } while(*line);
-
- fclose(f);
-
- return ret;
-}
-
-uint32_t kvmppc_get_tbfreq(void)
-{
- char line[512];
- char *ns;
- uint32_t retval = NANOSECONDS_PER_SECOND;
-
- if (read_cpuinfo("timebase", line, sizeof(line))) {
- return retval;
- }
-
- if (!(ns = strchr(line, ':'))) {
- return retval;
- }
-
- ns++;
-
- return atoi(ns);
-}
-
-bool kvmppc_get_host_serial(char **value)
-{
- return g_file_get_contents("/proc/device-tree/system-id", value, NULL,
- NULL);
-}
-
-bool kvmppc_get_host_model(char **value)
-{
- return g_file_get_contents("/proc/device-tree/model", value, NULL, NULL);
-}
-
-/* Try to find a device tree node for a CPU with clock-frequency property */
-static int kvmppc_find_cpu_dt(char *buf, int buf_len)
-{
- struct dirent *dirp;
- DIR *dp;
-
- if ((dp = opendir(PROC_DEVTREE_CPU)) == NULL) {
- printf("Can't open directory " PROC_DEVTREE_CPU "\n");
- return -1;
- }
-
- buf[0] = '\0';
- while ((dirp = readdir(dp)) != NULL) {
- FILE *f;
- snprintf(buf, buf_len, "%s%s/clock-frequency", PROC_DEVTREE_CPU,
- dirp->d_name);
- f = fopen(buf, "r");
- if (f) {
- snprintf(buf, buf_len, "%s%s", PROC_DEVTREE_CPU, dirp->d_name);
- fclose(f);
- break;
- }
- buf[0] = '\0';
- }
- closedir(dp);
- if (buf[0] == '\0') {
- printf("Unknown host!\n");
- return -1;
- }
-
- return 0;
-}
-
-static uint64_t kvmppc_read_int_dt(const char *filename)
-{
- union {
- uint32_t v32;
- uint64_t v64;
- } u;
- FILE *f;
- int len;
-
- f = fopen(filename, "rb");
- if (!f) {
- return -1;
- }
-
- len = fread(&u, 1, sizeof(u), f);
- fclose(f);
- switch (len) {
- case 4:
- /* property is a 32-bit quantity */
- return be32_to_cpu(u.v32);
- case 8:
- return be64_to_cpu(u.v64);
- }
-
- return 0;
-}
-
-/* Read a CPU node property from the host device tree that's a single
- * integer (32-bit or 64-bit). Returns 0 if anything goes wrong
- * (can't find or open the property, or doesn't understand the
- * format) */
-static uint64_t kvmppc_read_int_cpu_dt(const char *propname)
-{
- char buf[PATH_MAX], *tmp;
- uint64_t val;
-
- if (kvmppc_find_cpu_dt(buf, sizeof(buf))) {
- return -1;
- }
-
- tmp = g_strdup_printf("%s/%s", buf, propname);
- val = kvmppc_read_int_dt(tmp);
- g_free(tmp);
-
- return val;
-}
-
-uint64_t kvmppc_get_clockfreq(void)
-{
- return kvmppc_read_int_cpu_dt("clock-frequency");
-}
-
-uint32_t kvmppc_get_vmx(void)
-{
- return kvmppc_read_int_cpu_dt("ibm,vmx");
-}
-
-uint32_t kvmppc_get_dfp(void)
-{
- return kvmppc_read_int_cpu_dt("ibm,dfp");
-}
-
-static int kvmppc_get_pvinfo(CPUPPCState *env, struct kvm_ppc_pvinfo *pvinfo)
- {
- PowerPCCPU *cpu = ppc_env_get_cpu(env);
- CPUState *cs = CPU(cpu);
-
- if (kvm_vm_check_extension(cs->kvm_state, KVM_CAP_PPC_GET_PVINFO) &&
- !kvm_vm_ioctl(cs->kvm_state, KVM_PPC_GET_PVINFO, pvinfo)) {
- return 0;
- }
-
- return 1;
-}
-
-int kvmppc_get_hasidle(CPUPPCState *env)
-{
- struct kvm_ppc_pvinfo pvinfo;
-
- if (!kvmppc_get_pvinfo(env, &pvinfo) &&
- (pvinfo.flags & KVM_PPC_PVINFO_FLAGS_EV_IDLE)) {
- return 1;
- }
-
- return 0;
-}
-
-int kvmppc_get_hypercall(CPUPPCState *env, uint8_t *buf, int buf_len)
-{
- uint32_t *hc = (uint32_t*)buf;
- struct kvm_ppc_pvinfo pvinfo;
-
- if (!kvmppc_get_pvinfo(env, &pvinfo)) {
- memcpy(buf, pvinfo.hcall, buf_len);
- return 0;
- }
-
- /*
- * Fallback to always fail hypercalls regardless of endianness:
- *
- * tdi 0,r0,72 (becomes b .+8 in wrong endian, nop in good endian)
- * li r3, -1
- * b .+8 (becomes nop in wrong endian)
- * bswap32(li r3, -1)
- */
-
- hc[0] = cpu_to_be32(0x08000048);
- hc[1] = cpu_to_be32(0x3860ffff);
- hc[2] = cpu_to_be32(0x48000008);
- hc[3] = cpu_to_be32(bswap32(0x3860ffff));
-
- return 1;
-}
-
-static inline int kvmppc_enable_hcall(KVMState *s, target_ulong hcall)
-{
- return kvm_vm_enable_cap(s, KVM_CAP_PPC_ENABLE_HCALL, 0, hcall, 1);
-}
-
-void kvmppc_enable_logical_ci_hcalls(void)
-{
- /*
- * FIXME: it would be nice if we could detect the cases where
- * we're using a device which requires the in kernel
- * implementation of these hcalls, but the kernel lacks them and
- * produce a warning.
- */
- kvmppc_enable_hcall(kvm_state, H_LOGICAL_CI_LOAD);
- kvmppc_enable_hcall(kvm_state, H_LOGICAL_CI_STORE);
-}
-
-void kvmppc_enable_set_mode_hcall(void)
-{
- kvmppc_enable_hcall(kvm_state, H_SET_MODE);
-}
-
-void kvmppc_enable_clear_ref_mod_hcalls(void)
-{
- kvmppc_enable_hcall(kvm_state, H_CLEAR_REF);
- kvmppc_enable_hcall(kvm_state, H_CLEAR_MOD);
-}
-
-void kvmppc_set_papr(PowerPCCPU *cpu)
-{
- CPUState *cs = CPU(cpu);
- int ret;
-
- ret = kvm_vcpu_enable_cap(cs, KVM_CAP_PPC_PAPR, 0);
- if (ret) {
- error_report("This vCPU type or KVM version does not support PAPR");
- exit(1);
- }
-
- /* Update the capability flag so we sync the right information
- * with kvm */
- cap_papr = 1;
-}
-
-int kvmppc_set_compat(PowerPCCPU *cpu, uint32_t cpu_version)
-{
- return kvm_set_one_reg(CPU(cpu), KVM_REG_PPC_ARCH_COMPAT, &cpu_version);
-}
-
-void kvmppc_set_mpic_proxy(PowerPCCPU *cpu, int mpic_proxy)
-{
- CPUState *cs = CPU(cpu);
- int ret;
-
- ret = kvm_vcpu_enable_cap(cs, KVM_CAP_PPC_EPR, 0, mpic_proxy);
- if (ret && mpic_proxy) {
- error_report("This KVM version does not support EPR");
- exit(1);
- }
-}
-
-int kvmppc_smt_threads(void)
-{
- return cap_ppc_smt ? cap_ppc_smt : 1;
-}
-
-#ifdef TARGET_PPC64
-off_t kvmppc_alloc_rma(void **rma)
-{
- off_t size;
- int fd;
- struct kvm_allocate_rma ret;
-
- /* If cap_ppc_rma == 0, contiguous RMA allocation is not supported
- * if cap_ppc_rma == 1, contiguous RMA allocation is supported, but
- * not necessary on this hardware
- * if cap_ppc_rma == 2, contiguous RMA allocation is needed on this hardware
- *
- * FIXME: We should allow the user to force contiguous RMA
- * allocation in the cap_ppc_rma==1 case.
- */
- if (cap_ppc_rma < 2) {
- return 0;
- }
-
- fd = kvm_vm_ioctl(kvm_state, KVM_ALLOCATE_RMA, &ret);
- if (fd < 0) {
- fprintf(stderr, "KVM: Error on KVM_ALLOCATE_RMA: %s\n",
- strerror(errno));
- return -1;
- }
-
- size = MIN(ret.rma_size, 256ul << 20);
-
- *rma = mmap(NULL, size, PROT_READ|PROT_WRITE, MAP_SHARED, fd, 0);
- if (*rma == MAP_FAILED) {
- fprintf(stderr, "KVM: Error mapping RMA: %s\n", strerror(errno));
- return -1;
- };
-
- return size;
-}
-
-uint64_t kvmppc_rma_size(uint64_t current_size, unsigned int hash_shift)
-{
- struct kvm_ppc_smmu_info info;
- long rampagesize, best_page_shift;
- int i;
-
- if (cap_ppc_rma >= 2) {
- return current_size;
- }
-
- /* Find the largest hardware supported page size that's less than
- * or equal to the (logical) backing page size of guest RAM */
- kvm_get_smmu_info(POWERPC_CPU(first_cpu), &info);
- rampagesize = getrampagesize();
- best_page_shift = 0;
-
- for (i = 0; i < KVM_PPC_PAGE_SIZES_MAX_SZ; i++) {
- struct kvm_ppc_one_seg_page_size *sps = &info.sps[i];
-
- if (!sps->page_shift) {
- continue;
- }
-
- if ((sps->page_shift > best_page_shift)
- && ((1UL << sps->page_shift) <= rampagesize)) {
- best_page_shift = sps->page_shift;
- }
- }
-
- return MIN(current_size,
- 1ULL << (best_page_shift + hash_shift - 7));
-}
-#endif
-
-bool kvmppc_spapr_use_multitce(void)
-{
- return cap_spapr_multitce;
-}
-
-void *kvmppc_create_spapr_tce(uint32_t liobn, uint32_t window_size, int *pfd,
- bool need_vfio)
-{
- struct kvm_create_spapr_tce args = {
- .liobn = liobn,
- .window_size = window_size,
- };
- long len;
- int fd;
- void *table;
-
- /* Must set fd to -1 so we don't try to munmap when called for
- * destroying the table, which the upper layers -will- do
- */
- *pfd = -1;
- if (!cap_spapr_tce || (need_vfio && !cap_spapr_vfio)) {
- return NULL;
- }
-
- fd = kvm_vm_ioctl(kvm_state, KVM_CREATE_SPAPR_TCE, &args);
- if (fd < 0) {
- fprintf(stderr, "KVM: Failed to create TCE table for liobn 0x%x\n",
- liobn);
- return NULL;
- }
-
- len = (window_size / SPAPR_TCE_PAGE_SIZE) * sizeof(uint64_t);
- /* FIXME: round this up to page size */
-
- table = mmap(NULL, len, PROT_READ|PROT_WRITE, MAP_SHARED, fd, 0);
- if (table == MAP_FAILED) {
- fprintf(stderr, "KVM: Failed to map TCE table for liobn 0x%x\n",
- liobn);
- close(fd);
- return NULL;
- }
-
- *pfd = fd;
- return table;
-}
-
-int kvmppc_remove_spapr_tce(void *table, int fd, uint32_t nb_table)
-{
- long len;
-
- if (fd < 0) {
- return -1;
- }
-
- len = nb_table * sizeof(uint64_t);
- if ((munmap(table, len) < 0) ||
- (close(fd) < 0)) {
- fprintf(stderr, "KVM: Unexpected error removing TCE table: %s",
- strerror(errno));
- /* Leak the table */
- }
-
- return 0;
-}
-
-int kvmppc_reset_htab(int shift_hint)
-{
- uint32_t shift = shift_hint;
-
- if (!kvm_enabled()) {
- /* Full emulation, tell caller to allocate htab itself */
- return 0;
- }
- if (kvm_check_extension(kvm_state, KVM_CAP_PPC_ALLOC_HTAB)) {
- int ret;
- ret = kvm_vm_ioctl(kvm_state, KVM_PPC_ALLOCATE_HTAB, &shift);
- if (ret == -ENOTTY) {
- /* At least some versions of PR KVM advertise the
- * capability, but don't implement the ioctl(). Oops.
- * Return 0 so that we allocate the htab in qemu, as is
- * correct for PR. */
- return 0;
- } else if (ret < 0) {
- return ret;
- }
- return shift;
- }
-
- /* We have a kernel that predates the htab reset calls. For PR
- * KVM, we need to allocate the htab ourselves, for an HV KVM of
- * this era, it has allocated a 16MB fixed size hash table already. */
- if (kvmppc_is_pr(kvm_state)) {
- /* PR - tell caller to allocate htab */
- return 0;
- } else {
- /* HV - assume 16MB kernel allocated htab */
- return 24;
- }
-}
-
-static inline uint32_t mfpvr(void)
-{
- uint32_t pvr;
-
- asm ("mfpvr %0"
- : "=r"(pvr));
- return pvr;
-}
-
-static void alter_insns(uint64_t *word, uint64_t flags, bool on)
-{
- if (on) {
- *word |= flags;
- } else {
- *word &= ~flags;
- }
-}
-
-static void kvmppc_host_cpu_initfn(Object *obj)
-{
- assert(kvm_enabled());
-}
-
-static void kvmppc_host_cpu_class_init(ObjectClass *oc, void *data)
-{
- DeviceClass *dc = DEVICE_CLASS(oc);
- PowerPCCPUClass *pcc = POWERPC_CPU_CLASS(oc);
- uint32_t vmx = kvmppc_get_vmx();
- uint32_t dfp = kvmppc_get_dfp();
- uint32_t dcache_size = kvmppc_read_int_cpu_dt("d-cache-size");
- uint32_t icache_size = kvmppc_read_int_cpu_dt("i-cache-size");
-
- /* Now fix up the class with information we can query from the host */
- pcc->pvr = mfpvr();
-
- if (vmx != -1) {
- /* Only override when we know what the host supports */
- alter_insns(&pcc->insns_flags, PPC_ALTIVEC, vmx > 0);
- alter_insns(&pcc->insns_flags2, PPC2_VSX, vmx > 1);
- }
- if (dfp != -1) {
- /* Only override when we know what the host supports */
- alter_insns(&pcc->insns_flags2, PPC2_DFP, dfp);
- }
-
- if (dcache_size != -1) {
- pcc->l1_dcache_size = dcache_size;
- }
-
- if (icache_size != -1) {
- pcc->l1_icache_size = icache_size;
- }
-
- /* Reason: kvmppc_host_cpu_initfn() dies when !kvm_enabled() */
- dc->cannot_destroy_with_object_finalize_yet = true;
-}
-
-bool kvmppc_has_cap_epr(void)
-{
- return cap_epr;
-}
-
-bool kvmppc_has_cap_htab_fd(void)
-{
- return cap_htab_fd;
-}
-
-bool kvmppc_has_cap_fixup_hcalls(void)
-{
- return cap_fixup_hcalls;
-}
-
-bool kvmppc_has_cap_htm(void)
-{
- return cap_htm;
-}
-
-static PowerPCCPUClass *ppc_cpu_get_family_class(PowerPCCPUClass *pcc)
-{
- ObjectClass *oc = OBJECT_CLASS(pcc);
-
- while (oc && !object_class_is_abstract(oc)) {
- oc = object_class_get_parent(oc);
- }
- assert(oc);
-
- return POWERPC_CPU_CLASS(oc);
-}
-
-PowerPCCPUClass *kvm_ppc_get_host_cpu_class(void)
-{
- uint32_t host_pvr = mfpvr();
- PowerPCCPUClass *pvr_pcc;
-
- pvr_pcc = ppc_cpu_class_by_pvr(host_pvr);
- if (pvr_pcc == NULL) {
- pvr_pcc = ppc_cpu_class_by_pvr_mask(host_pvr);
- }
-
- return pvr_pcc;
-}
-
-static int kvm_ppc_register_host_cpu_type(void)
-{
- TypeInfo type_info = {
- .name = TYPE_HOST_POWERPC_CPU,
- .instance_init = kvmppc_host_cpu_initfn,
- .class_init = kvmppc_host_cpu_class_init,
- };
- PowerPCCPUClass *pvr_pcc;
- DeviceClass *dc;
-
- pvr_pcc = kvm_ppc_get_host_cpu_class();
- if (pvr_pcc == NULL) {
- return -1;
- }
- type_info.parent = object_class_get_name(OBJECT_CLASS(pvr_pcc));
- type_register(&type_info);
-
- /* Register generic family CPU class for a family */
- pvr_pcc = ppc_cpu_get_family_class(pvr_pcc);
- dc = DEVICE_CLASS(pvr_pcc);
- type_info.parent = object_class_get_name(OBJECT_CLASS(pvr_pcc));
- type_info.name = g_strdup_printf("%s-"TYPE_POWERPC_CPU, dc->desc);
- type_register(&type_info);
-
-#if defined(TARGET_PPC64)
- type_info.name = g_strdup_printf("%s-"TYPE_SPAPR_CPU_CORE, "host");
- type_info.parent = TYPE_SPAPR_CPU_CORE,
- type_info.instance_size = sizeof(sPAPRCPUCore);
- type_info.instance_init = NULL;
- type_info.class_init = spapr_cpu_core_class_init;
- type_info.class_data = (void *) "host";
- type_register(&type_info);
- g_free((void *)type_info.name);
-
- /* Register generic spapr CPU family class for current host CPU type */
- type_info.name = g_strdup_printf("%s-"TYPE_SPAPR_CPU_CORE, dc->desc);
- type_info.class_data = (void *) dc->desc;
- type_register(&type_info);
- g_free((void *)type_info.name);
-#endif
-
- return 0;
-}
-
-int kvmppc_define_rtas_kernel_token(uint32_t token, const char *function)
-{
- struct kvm_rtas_token_args args = {
- .token = token,
- };
-
- if (!kvm_check_extension(kvm_state, KVM_CAP_PPC_RTAS)) {
- return -ENOENT;
- }
-
- strncpy(args.name, function, sizeof(args.name));
-
- return kvm_vm_ioctl(kvm_state, KVM_PPC_RTAS_DEFINE_TOKEN, &args);
-}
-
-int kvmppc_get_htab_fd(bool write)
-{
- struct kvm_get_htab_fd s = {
- .flags = write ? KVM_GET_HTAB_WRITE : 0,
- .start_index = 0,
- };
-
- if (!cap_htab_fd) {
- fprintf(stderr, "KVM version doesn't support saving the hash table\n");
- return -1;
- }
-
- return kvm_vm_ioctl(kvm_state, KVM_PPC_GET_HTAB_FD, &s);
-}
-
-int kvmppc_save_htab(QEMUFile *f, int fd, size_t bufsize, int64_t max_ns)
-{
- int64_t starttime = qemu_clock_get_ns(QEMU_CLOCK_REALTIME);
- uint8_t buf[bufsize];
- ssize_t rc;
-
- do {
- rc = read(fd, buf, bufsize);
- if (rc < 0) {
- fprintf(stderr, "Error reading data from KVM HTAB fd: %s\n",
- strerror(errno));
- return rc;
- } else if (rc) {
- uint8_t *buffer = buf;
- ssize_t n = rc;
- while (n) {
- struct kvm_get_htab_header *head =
- (struct kvm_get_htab_header *) buffer;
- size_t chunksize = sizeof(*head) +
- HASH_PTE_SIZE_64 * head->n_valid;
-
- qemu_put_be32(f, head->index);
- qemu_put_be16(f, head->n_valid);
- qemu_put_be16(f, head->n_invalid);
- qemu_put_buffer(f, (void *)(head + 1),
- HASH_PTE_SIZE_64 * head->n_valid);
-
- buffer += chunksize;
- n -= chunksize;
- }
- }
- } while ((rc != 0)
- && ((max_ns < 0)
- || ((qemu_clock_get_ns(QEMU_CLOCK_REALTIME) - starttime) < max_ns)));
-
- return (rc == 0) ? 1 : 0;
-}
-
-int kvmppc_load_htab_chunk(QEMUFile *f, int fd, uint32_t index,
- uint16_t n_valid, uint16_t n_invalid)
-{
- struct kvm_get_htab_header *buf;
- size_t chunksize = sizeof(*buf) + n_valid*HASH_PTE_SIZE_64;
- ssize_t rc;
-
- buf = alloca(chunksize);
- buf->index = index;
- buf->n_valid = n_valid;
- buf->n_invalid = n_invalid;
-
- qemu_get_buffer(f, (void *)(buf + 1), HASH_PTE_SIZE_64*n_valid);
-
- rc = write(fd, buf, chunksize);
- if (rc < 0) {
- fprintf(stderr, "Error writing KVM hash table: %s\n",
- strerror(errno));
- return rc;
- }
- if (rc != chunksize) {
- /* We should never get a short write on a single chunk */
- fprintf(stderr, "Short write, restoring KVM hash table\n");
- return -1;
- }
- return 0;
-}
-
-bool kvm_arch_stop_on_emulation_error(CPUState *cpu)
-{
- return true;
-}
-
-int kvm_arch_on_sigbus_vcpu(CPUState *cpu, int code, void *addr)
-{
- return 1;
-}
-
-int kvm_arch_on_sigbus(int code, void *addr)
-{
- return 1;
-}
-
-void kvm_arch_init_irq_routing(KVMState *s)
-{
-}
-
-struct kvm_get_htab_buf {
- struct kvm_get_htab_header header;
- /*
- * We require one extra byte for read
- */
- target_ulong hpte[(HPTES_PER_GROUP * 2) + 1];
-};
-
-uint64_t kvmppc_hash64_read_pteg(PowerPCCPU *cpu, target_ulong pte_index)
-{
- int htab_fd;
- struct kvm_get_htab_fd ghf;
- struct kvm_get_htab_buf *hpte_buf;
-
- ghf.flags = 0;
- ghf.start_index = pte_index;
- htab_fd = kvm_vm_ioctl(kvm_state, KVM_PPC_GET_HTAB_FD, &ghf);
- if (htab_fd < 0) {
- goto error_out;
- }
-
- hpte_buf = g_malloc0(sizeof(*hpte_buf));
- /*
- * Read the hpte group
- */
- if (read(htab_fd, hpte_buf, sizeof(*hpte_buf)) < 0) {
- goto out_close;
- }
-
- close(htab_fd);
- return (uint64_t)(uintptr_t) hpte_buf->hpte;
-
-out_close:
- g_free(hpte_buf);
- close(htab_fd);
-error_out:
- return 0;
-}
-
-void kvmppc_hash64_free_pteg(uint64_t token)
-{
- struct kvm_get_htab_buf *htab_buf;
-
- htab_buf = container_of((void *)(uintptr_t) token, struct kvm_get_htab_buf,
- hpte);
- g_free(htab_buf);
- return;
-}
-
-void kvmppc_hash64_write_pte(CPUPPCState *env, target_ulong pte_index,
- target_ulong pte0, target_ulong pte1)
-{
- int htab_fd;
- struct kvm_get_htab_fd ghf;
- struct kvm_get_htab_buf hpte_buf;
-
- ghf.flags = 0;
- ghf.start_index = 0; /* Ignored */
- htab_fd = kvm_vm_ioctl(kvm_state, KVM_PPC_GET_HTAB_FD, &ghf);
- if (htab_fd < 0) {
- goto error_out;
- }
-
- hpte_buf.header.n_valid = 1;
- hpte_buf.header.n_invalid = 0;
- hpte_buf.header.index = pte_index;
- hpte_buf.hpte[0] = pte0;
- hpte_buf.hpte[1] = pte1;
- /*
- * Write the hpte entry.
- * CAUTION: write() has the warn_unused_result attribute. Hence we
- * need to check the return value, even though we do nothing.
- */
- if (write(htab_fd, &hpte_buf, sizeof(hpte_buf)) < 0) {
- goto out_close;
- }
-
-out_close:
- close(htab_fd);
- return;
-
-error_out:
- return;
-}
-
-int kvm_arch_fixup_msi_route(struct kvm_irq_routing_entry *route,
- uint64_t address, uint32_t data, PCIDevice *dev)
-{
- return 0;
-}
-
-int kvm_arch_add_msi_route_post(struct kvm_irq_routing_entry *route,
- int vector, PCIDevice *dev)
-{
- return 0;
-}
-
-int kvm_arch_release_virq_post(int virq)
-{
- return 0;
-}
-
-int kvm_arch_msi_data_to_gsi(uint32_t data)
-{
- return data & 0xffff;
-}
-
-int kvmppc_enable_hwrng(void)
-{
- if (!kvm_enabled() || !kvm_check_extension(kvm_state, KVM_CAP_PPC_HWRNG)) {
- return -1;
- }
-
- return kvmppc_enable_hcall(kvm_state, H_RANDOM);
-}