diff options
author | Lucas Mateus Castro (alqotel) <lucas.araujo@eldorado.org.br> | 2021-05-06 13:39:38 -0300 |
---|---|---|
committer | David Gibson <david@gibson.dropbear.id.au> | 2021-05-19 10:30:28 +1000 |
commit | 962104f04482ad1244158068af36284f92038ca4 (patch) | |
tree | 840e20ca4b2201e4fd89f066836207a45edd8ed1 /hw/ppc/spapr_hcall.c | |
parent | 37f219c8f8b93f5bd1cb9bc156066357a806393a (diff) |
hw/ppc: moved hcalls that depend on softmmu
The hypercalls h_enter, h_remove, h_bulk_remove, h_protect, and h_read,
have been moved to spapr_softmmu.c with the functions they depend on. The
functions is_ram_address and push_sregs_to_kvm_pr are not static anymore
as functions on both spapr_hcall.c and spapr_softmmu.c depend on them.
The hypercalls h_resize_hpt_prepare and h_resize_hpt_commit have been
divided, the KVM part stayed in spapr_hcall.c while the softmmu part
was moved to spapr_softmmu.c
Signed-off-by: Lucas Mateus Castro (alqotel) <lucas.araujo@eldorado.org.br>
Message-Id: <20210506163941.106984-2-lucas.araujo@eldorado.org.br>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Diffstat (limited to 'hw/ppc/spapr_hcall.c')
-rw-r--r-- | hw/ppc/spapr_hcall.c | 608 |
1 files changed, 32 insertions, 576 deletions
diff --git a/hw/ppc/spapr_hcall.c b/hw/ppc/spapr_hcall.c index 186b7666cc..6dbaa93d15 100644 --- a/hw/ppc/spapr_hcall.c +++ b/hw/ppc/spapr_hcall.c @@ -26,18 +26,7 @@ static bool has_spr(PowerPCCPU *cpu, int spr) return cpu->env.spr_cb[spr].name != NULL; } -static inline bool valid_ptex(PowerPCCPU *cpu, target_ulong ptex) -{ - /* - * hash value/pteg group index is normalized by HPT mask - */ - if (((ptex & ~7ULL) / HPTES_PER_GROUP) & ~ppc_hash64_hpt_mask(cpu)) { - return false; - } - return true; -} - -static bool is_ram_address(SpaprMachineState *spapr, hwaddr addr) +bool is_ram_address(SpaprMachineState *spapr, hwaddr addr) { MachineState *machine = MACHINE(spapr); DeviceMemoryState *dms = machine->device_memory; @@ -53,355 +42,6 @@ static bool is_ram_address(SpaprMachineState *spapr, hwaddr addr) return false; } -static target_ulong h_enter(PowerPCCPU *cpu, SpaprMachineState *spapr, - target_ulong opcode, target_ulong *args) -{ - target_ulong flags = args[0]; - target_ulong ptex = args[1]; - target_ulong pteh = args[2]; - target_ulong ptel = args[3]; - unsigned apshift; - target_ulong raddr; - target_ulong slot; - const ppc_hash_pte64_t *hptes; - - apshift = ppc_hash64_hpte_page_shift_noslb(cpu, pteh, ptel); - if (!apshift) { - /* Bad page size encoding */ - return H_PARAMETER; - } - - raddr = (ptel & HPTE64_R_RPN) & ~((1ULL << apshift) - 1); - - if (is_ram_address(spapr, raddr)) { - /* Regular RAM - should have WIMG=0010 */ - if ((ptel & HPTE64_R_WIMG) != HPTE64_R_M) { - return H_PARAMETER; - } - } else { - target_ulong wimg_flags; - /* Looks like an IO address */ - /* FIXME: What WIMG combinations could be sensible for IO? - * For now we allow WIMG=010x, but are there others? */ - /* FIXME: Should we check against registered IO addresses? */ - wimg_flags = (ptel & (HPTE64_R_W | HPTE64_R_I | HPTE64_R_M)); - - if (wimg_flags != HPTE64_R_I && - wimg_flags != (HPTE64_R_I | HPTE64_R_M)) { - return H_PARAMETER; - } - } - - pteh &= ~0x60ULL; - - if (!valid_ptex(cpu, ptex)) { - return H_PARAMETER; - } - - slot = ptex & 7ULL; - ptex = ptex & ~7ULL; - - if (likely((flags & H_EXACT) == 0)) { - hptes = ppc_hash64_map_hptes(cpu, ptex, HPTES_PER_GROUP); - for (slot = 0; slot < 8; slot++) { - if (!(ppc_hash64_hpte0(cpu, hptes, slot) & HPTE64_V_VALID)) { - break; - } - } - ppc_hash64_unmap_hptes(cpu, hptes, ptex, HPTES_PER_GROUP); - if (slot == 8) { - return H_PTEG_FULL; - } - } else { - hptes = ppc_hash64_map_hptes(cpu, ptex + slot, 1); - if (ppc_hash64_hpte0(cpu, hptes, 0) & HPTE64_V_VALID) { - ppc_hash64_unmap_hptes(cpu, hptes, ptex + slot, 1); - return H_PTEG_FULL; - } - ppc_hash64_unmap_hptes(cpu, hptes, ptex, 1); - } - - spapr_store_hpte(cpu, ptex + slot, pteh | HPTE64_V_HPTE_DIRTY, ptel); - - args[0] = ptex + slot; - return H_SUCCESS; -} - -typedef enum { - REMOVE_SUCCESS = 0, - REMOVE_NOT_FOUND = 1, - REMOVE_PARM = 2, - REMOVE_HW = 3, -} RemoveResult; - -static RemoveResult remove_hpte(PowerPCCPU *cpu - , target_ulong ptex, - target_ulong avpn, - target_ulong flags, - target_ulong *vp, target_ulong *rp) -{ - const ppc_hash_pte64_t *hptes; - target_ulong v, r; - - if (!valid_ptex(cpu, ptex)) { - return REMOVE_PARM; - } - - hptes = ppc_hash64_map_hptes(cpu, ptex, 1); - v = ppc_hash64_hpte0(cpu, hptes, 0); - r = ppc_hash64_hpte1(cpu, hptes, 0); - ppc_hash64_unmap_hptes(cpu, hptes, ptex, 1); - - if ((v & HPTE64_V_VALID) == 0 || - ((flags & H_AVPN) && (v & ~0x7fULL) != avpn) || - ((flags & H_ANDCOND) && (v & avpn) != 0)) { - return REMOVE_NOT_FOUND; - } - *vp = v; - *rp = r; - spapr_store_hpte(cpu, ptex, HPTE64_V_HPTE_DIRTY, 0); - ppc_hash64_tlb_flush_hpte(cpu, ptex, v, r); - return REMOVE_SUCCESS; -} - -static target_ulong h_remove(PowerPCCPU *cpu, SpaprMachineState *spapr, - target_ulong opcode, target_ulong *args) -{ - CPUPPCState *env = &cpu->env; - target_ulong flags = args[0]; - target_ulong ptex = args[1]; - target_ulong avpn = args[2]; - RemoveResult ret; - - ret = remove_hpte(cpu, ptex, avpn, flags, - &args[0], &args[1]); - - switch (ret) { - case REMOVE_SUCCESS: - check_tlb_flush(env, true); - return H_SUCCESS; - - case REMOVE_NOT_FOUND: - return H_NOT_FOUND; - - case REMOVE_PARM: - return H_PARAMETER; - - case REMOVE_HW: - return H_HARDWARE; - } - - g_assert_not_reached(); -} - -#define H_BULK_REMOVE_TYPE 0xc000000000000000ULL -#define H_BULK_REMOVE_REQUEST 0x4000000000000000ULL -#define H_BULK_REMOVE_RESPONSE 0x8000000000000000ULL -#define H_BULK_REMOVE_END 0xc000000000000000ULL -#define H_BULK_REMOVE_CODE 0x3000000000000000ULL -#define H_BULK_REMOVE_SUCCESS 0x0000000000000000ULL -#define H_BULK_REMOVE_NOT_FOUND 0x1000000000000000ULL -#define H_BULK_REMOVE_PARM 0x2000000000000000ULL -#define H_BULK_REMOVE_HW 0x3000000000000000ULL -#define H_BULK_REMOVE_RC 0x0c00000000000000ULL -#define H_BULK_REMOVE_FLAGS 0x0300000000000000ULL -#define H_BULK_REMOVE_ABSOLUTE 0x0000000000000000ULL -#define H_BULK_REMOVE_ANDCOND 0x0100000000000000ULL -#define H_BULK_REMOVE_AVPN 0x0200000000000000ULL -#define H_BULK_REMOVE_PTEX 0x00ffffffffffffffULL - -#define H_BULK_REMOVE_MAX_BATCH 4 - -static target_ulong h_bulk_remove(PowerPCCPU *cpu, SpaprMachineState *spapr, - target_ulong opcode, target_ulong *args) -{ - CPUPPCState *env = &cpu->env; - int i; - target_ulong rc = H_SUCCESS; - - for (i = 0; i < H_BULK_REMOVE_MAX_BATCH; i++) { - target_ulong *tsh = &args[i*2]; - target_ulong tsl = args[i*2 + 1]; - target_ulong v, r, ret; - - if ((*tsh & H_BULK_REMOVE_TYPE) == H_BULK_REMOVE_END) { - break; - } else if ((*tsh & H_BULK_REMOVE_TYPE) != H_BULK_REMOVE_REQUEST) { - return H_PARAMETER; - } - - *tsh &= H_BULK_REMOVE_PTEX | H_BULK_REMOVE_FLAGS; - *tsh |= H_BULK_REMOVE_RESPONSE; - - if ((*tsh & H_BULK_REMOVE_ANDCOND) && (*tsh & H_BULK_REMOVE_AVPN)) { - *tsh |= H_BULK_REMOVE_PARM; - return H_PARAMETER; - } - - ret = remove_hpte(cpu, *tsh & H_BULK_REMOVE_PTEX, tsl, - (*tsh & H_BULK_REMOVE_FLAGS) >> 26, - &v, &r); - - *tsh |= ret << 60; - - switch (ret) { - case REMOVE_SUCCESS: - *tsh |= (r & (HPTE64_R_C | HPTE64_R_R)) << 43; - break; - - case REMOVE_PARM: - rc = H_PARAMETER; - goto exit; - - case REMOVE_HW: - rc = H_HARDWARE; - goto exit; - } - } - exit: - check_tlb_flush(env, true); - - return rc; -} - -static target_ulong h_protect(PowerPCCPU *cpu, SpaprMachineState *spapr, - target_ulong opcode, target_ulong *args) -{ - CPUPPCState *env = &cpu->env; - target_ulong flags = args[0]; - target_ulong ptex = args[1]; - target_ulong avpn = args[2]; - const ppc_hash_pte64_t *hptes; - target_ulong v, r; - - if (!valid_ptex(cpu, ptex)) { - return H_PARAMETER; - } - - hptes = ppc_hash64_map_hptes(cpu, ptex, 1); - v = ppc_hash64_hpte0(cpu, hptes, 0); - r = ppc_hash64_hpte1(cpu, hptes, 0); - ppc_hash64_unmap_hptes(cpu, hptes, ptex, 1); - - if ((v & HPTE64_V_VALID) == 0 || - ((flags & H_AVPN) && (v & ~0x7fULL) != avpn)) { - return H_NOT_FOUND; - } - - r &= ~(HPTE64_R_PP0 | HPTE64_R_PP | HPTE64_R_N | - HPTE64_R_KEY_HI | HPTE64_R_KEY_LO); - r |= (flags << 55) & HPTE64_R_PP0; - r |= (flags << 48) & HPTE64_R_KEY_HI; - r |= flags & (HPTE64_R_PP | HPTE64_R_N | HPTE64_R_KEY_LO); - spapr_store_hpte(cpu, ptex, - (v & ~HPTE64_V_VALID) | HPTE64_V_HPTE_DIRTY, 0); - ppc_hash64_tlb_flush_hpte(cpu, ptex, v, r); - /* Flush the tlb */ - check_tlb_flush(env, true); - /* Don't need a memory barrier, due to qemu's global lock */ - spapr_store_hpte(cpu, ptex, v | HPTE64_V_HPTE_DIRTY, r); - return H_SUCCESS; -} - -static target_ulong h_read(PowerPCCPU *cpu, SpaprMachineState *spapr, - target_ulong opcode, target_ulong *args) -{ - target_ulong flags = args[0]; - target_ulong ptex = args[1]; - int i, ridx, n_entries = 1; - const ppc_hash_pte64_t *hptes; - - if (!valid_ptex(cpu, ptex)) { - return H_PARAMETER; - } - - if (flags & H_READ_4) { - /* Clear the two low order bits */ - ptex &= ~(3ULL); - n_entries = 4; - } - - hptes = ppc_hash64_map_hptes(cpu, ptex, n_entries); - for (i = 0, ridx = 0; i < n_entries; i++) { - args[ridx++] = ppc_hash64_hpte0(cpu, hptes, i); - args[ridx++] = ppc_hash64_hpte1(cpu, hptes, i); - } - ppc_hash64_unmap_hptes(cpu, hptes, ptex, n_entries); - - return H_SUCCESS; -} - -struct SpaprPendingHpt { - /* These fields are read-only after initialization */ - int shift; - QemuThread thread; - - /* These fields are protected by the BQL */ - bool complete; - - /* These fields are private to the preparation thread if - * !complete, otherwise protected by the BQL */ - int ret; - void *hpt; -}; - -static void free_pending_hpt(SpaprPendingHpt *pending) -{ - if (pending->hpt) { - qemu_vfree(pending->hpt); - } - - g_free(pending); -} - -static void *hpt_prepare_thread(void *opaque) -{ - SpaprPendingHpt *pending = opaque; - size_t size = 1ULL << pending->shift; - - pending->hpt = qemu_try_memalign(size, size); - if (pending->hpt) { - memset(pending->hpt, 0, size); - pending->ret = H_SUCCESS; - } else { - pending->ret = H_NO_MEM; - } - - qemu_mutex_lock_iothread(); - - if (SPAPR_MACHINE(qdev_get_machine())->pending_hpt == pending) { - /* Ready to go */ - pending->complete = true; - } else { - /* We've been cancelled, clean ourselves up */ - free_pending_hpt(pending); - } - - qemu_mutex_unlock_iothread(); - return NULL; -} - -/* Must be called with BQL held */ -static void cancel_hpt_prepare(SpaprMachineState *spapr) -{ - SpaprPendingHpt *pending = spapr->pending_hpt; - - /* Let the thread know it's cancelled */ - spapr->pending_hpt = NULL; - - if (!pending) { - /* Nothing to do */ - return; - } - - if (!pending->complete) { - /* thread will clean itself up */ - return; - } - - free_pending_hpt(pending); -} - /* Convert a return code from the KVM ioctl()s implementing resize HPT * into a PAPR hypercall return code */ static target_ulong resize_hpt_convert_rc(int ret) @@ -447,7 +87,6 @@ static target_ulong h_resize_hpt_prepare(PowerPCCPU *cpu, { target_ulong flags = args[0]; int shift = args[1]; - SpaprPendingHpt *pending = spapr->pending_hpt; uint64_t current_ram_size; int rc; @@ -484,182 +123,11 @@ static target_ulong h_resize_hpt_prepare(PowerPCCPU *cpu, return resize_hpt_convert_rc(rc); } - if (pending) { - /* something already in progress */ - if (pending->shift == shift) { - /* and it's suitable */ - if (pending->complete) { - return pending->ret; - } else { - return H_LONG_BUSY_ORDER_100_MSEC; - } - } - - /* not suitable, cancel and replace */ - cancel_hpt_prepare(spapr); - } - - if (!shift) { - /* nothing to do */ - return H_SUCCESS; - } - - /* start new prepare */ - - pending = g_new0(SpaprPendingHpt, 1); - pending->shift = shift; - pending->ret = H_HARDWARE; - - qemu_thread_create(&pending->thread, "sPAPR HPT prepare", - hpt_prepare_thread, pending, QEMU_THREAD_DETACHED); - - spapr->pending_hpt = pending; - - /* In theory we could estimate the time more accurately based on - * the new size, but there's not much point */ - return H_LONG_BUSY_ORDER_100_MSEC; -} - -static uint64_t new_hpte_load0(void *htab, uint64_t pteg, int slot) -{ - uint8_t *addr = htab; - - addr += pteg * HASH_PTEG_SIZE_64; - addr += slot * HASH_PTE_SIZE_64; - return ldq_p(addr); -} - -static void new_hpte_store(void *htab, uint64_t pteg, int slot, - uint64_t pte0, uint64_t pte1) -{ - uint8_t *addr = htab; - - addr += pteg * HASH_PTEG_SIZE_64; - addr += slot * HASH_PTE_SIZE_64; - - stq_p(addr, pte0); - stq_p(addr + HASH_PTE_SIZE_64 / 2, pte1); -} - -static int rehash_hpte(PowerPCCPU *cpu, - const ppc_hash_pte64_t *hptes, - void *old_hpt, uint64_t oldsize, - void *new_hpt, uint64_t newsize, - uint64_t pteg, int slot) -{ - uint64_t old_hash_mask = (oldsize >> 7) - 1; - uint64_t new_hash_mask = (newsize >> 7) - 1; - target_ulong pte0 = ppc_hash64_hpte0(cpu, hptes, slot); - target_ulong pte1; - uint64_t avpn; - unsigned base_pg_shift; - uint64_t hash, new_pteg, replace_pte0; - - if (!(pte0 & HPTE64_V_VALID) || !(pte0 & HPTE64_V_BOLTED)) { - return H_SUCCESS; - } - - pte1 = ppc_hash64_hpte1(cpu, hptes, slot); - - base_pg_shift = ppc_hash64_hpte_page_shift_noslb(cpu, pte0, pte1); - assert(base_pg_shift); /* H_ENTER shouldn't allow a bad encoding */ - avpn = HPTE64_V_AVPN_VAL(pte0) & ~(((1ULL << base_pg_shift) - 1) >> 23); - - if (pte0 & HPTE64_V_SECONDARY) { - pteg = ~pteg; - } - - if ((pte0 & HPTE64_V_SSIZE) == HPTE64_V_SSIZE_256M) { - uint64_t offset, vsid; - - /* We only have 28 - 23 bits of offset in avpn */ - offset = (avpn & 0x1f) << 23; - vsid = avpn >> 5; - /* We can find more bits from the pteg value */ - if (base_pg_shift < 23) { - offset |= ((vsid ^ pteg) & old_hash_mask) << base_pg_shift; - } - - hash = vsid ^ (offset >> base_pg_shift); - } else if ((pte0 & HPTE64_V_SSIZE) == HPTE64_V_SSIZE_1T) { - uint64_t offset, vsid; - - /* We only have 40 - 23 bits of seg_off in avpn */ - offset = (avpn & 0x1ffff) << 23; - vsid = avpn >> 17; - if (base_pg_shift < 23) { - offset |= ((vsid ^ (vsid << 25) ^ pteg) & old_hash_mask) - << base_pg_shift; - } - - hash = vsid ^ (vsid << 25) ^ (offset >> base_pg_shift); - } else { - error_report("rehash_pte: Bad segment size in HPTE"); + if (kvm_enabled()) { return H_HARDWARE; } - new_pteg = hash & new_hash_mask; - if (pte0 & HPTE64_V_SECONDARY) { - assert(~pteg == (hash & old_hash_mask)); - new_pteg = ~new_pteg; - } else { - assert(pteg == (hash & old_hash_mask)); - } - assert((oldsize != newsize) || (pteg == new_pteg)); - replace_pte0 = new_hpte_load0(new_hpt, new_pteg, slot); - /* - * Strictly speaking, we don't need all these tests, since we only - * ever rehash bolted HPTEs. We might in future handle non-bolted - * HPTEs, though so make the logic correct for those cases as - * well. - */ - if (replace_pte0 & HPTE64_V_VALID) { - assert(newsize < oldsize); - if (replace_pte0 & HPTE64_V_BOLTED) { - if (pte0 & HPTE64_V_BOLTED) { - /* Bolted collision, nothing we can do */ - return H_PTEG_FULL; - } else { - /* Discard this hpte */ - return H_SUCCESS; - } - } - } - - new_hpte_store(new_hpt, new_pteg, slot, pte0, pte1); - return H_SUCCESS; -} - -static int rehash_hpt(PowerPCCPU *cpu, - void *old_hpt, uint64_t oldsize, - void *new_hpt, uint64_t newsize) -{ - uint64_t n_ptegs = oldsize >> 7; - uint64_t pteg; - int slot; - int rc; - - for (pteg = 0; pteg < n_ptegs; pteg++) { - hwaddr ptex = pteg * HPTES_PER_GROUP; - const ppc_hash_pte64_t *hptes - = ppc_hash64_map_hptes(cpu, ptex, HPTES_PER_GROUP); - - if (!hptes) { - return H_HARDWARE; - } - - for (slot = 0; slot < HPTES_PER_GROUP; slot++) { - rc = rehash_hpte(cpu, hptes, old_hpt, oldsize, new_hpt, newsize, - pteg, slot); - if (rc != H_SUCCESS) { - ppc_hash64_unmap_hptes(cpu, hptes, ptex, HPTES_PER_GROUP); - return rc; - } - } - ppc_hash64_unmap_hptes(cpu, hptes, ptex, HPTES_PER_GROUP); - } - - return H_SUCCESS; + return softmmu_resize_hpt_prepare(cpu, spapr, shift); } static void do_push_sregs_to_kvm_pr(CPUState *cs, run_on_cpu_data data) @@ -675,7 +143,7 @@ static void do_push_sregs_to_kvm_pr(CPUState *cs, run_on_cpu_data data) } } -static void push_sregs_to_kvm_pr(SpaprMachineState *spapr) +void push_sregs_to_kvm_pr(SpaprMachineState *spapr) { CPUState *cs; @@ -700,9 +168,7 @@ static target_ulong h_resize_hpt_commit(PowerPCCPU *cpu, { target_ulong flags = args[0]; target_ulong shift = args[1]; - SpaprPendingHpt *pending = spapr->pending_hpt; int rc; - size_t newsize; if (spapr->resize_hpt == SPAPR_RESIZE_HPT_DISABLED) { return H_AUTHORITY; @@ -725,42 +191,14 @@ static target_ulong h_resize_hpt_commit(PowerPCCPU *cpu, return rc; } - if (flags != 0) { - return H_PARAMETER; - } - - if (!pending || (pending->shift != shift)) { - /* no matching prepare */ - return H_CLOSED; - } - - if (!pending->complete) { - /* prepare has not completed */ - return H_BUSY; + if (kvm_enabled()) { + return H_HARDWARE; } - /* Shouldn't have got past PREPARE without an HPT */ - g_assert(spapr->htab_shift); - - newsize = 1ULL << pending->shift; - rc = rehash_hpt(cpu, spapr->htab, HTAB_SIZE(spapr), - pending->hpt, newsize); - if (rc == H_SUCCESS) { - qemu_vfree(spapr->htab); - spapr->htab = pending->hpt; - spapr->htab_shift = pending->shift; - - push_sregs_to_kvm_pr(spapr); - - pending->hpt = NULL; /* so it's not free()d */ - } + return softmmu_resize_hpt_commit(cpu, spapr, flags, shift); +} - /* Clean up */ - spapr->pending_hpt = NULL; - free_pending_hpt(pending); - return rc; -} static target_ulong h_set_sprg0(PowerPCCPU *cpu, SpaprMachineState *spapr, target_ulong opcode, target_ulong *args) @@ -2013,16 +1451,34 @@ target_ulong spapr_hypercall(PowerPCCPU *cpu, target_ulong opcode, return H_FUNCTION; } -static void hypercall_register_types(void) +#ifndef CONFIG_TCG +static target_ulong h_softmmu(PowerPCCPU *cpu, SpaprMachineState *spapr, + target_ulong opcode, target_ulong *args) +{ + g_assert_not_reached(); +} + +static void hypercall_register_softmmu(void) { /* hcall-pft */ - spapr_register_hypercall(H_ENTER, h_enter); - spapr_register_hypercall(H_REMOVE, h_remove); - spapr_register_hypercall(H_PROTECT, h_protect); - spapr_register_hypercall(H_READ, h_read); + spapr_register_hypercall(H_ENTER, h_softmmu); + spapr_register_hypercall(H_REMOVE, h_softmmu); + spapr_register_hypercall(H_PROTECT, h_softmmu); + spapr_register_hypercall(H_READ, h_softmmu); /* hcall-bulk */ - spapr_register_hypercall(H_BULK_REMOVE, h_bulk_remove); + spapr_register_hypercall(H_BULK_REMOVE, h_softmmu); +} +#else +static void hypercall_register_softmmu(void) +{ + /* DO NOTHING */ +} +#endif + +static void hypercall_register_types(void) +{ + hypercall_register_softmmu(); /* hcall-hpt-resize */ spapr_register_hypercall(H_RESIZE_HPT_PREPARE, h_resize_hpt_prepare); |