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Diffstat (limited to 'target/s390x/mmu_helper.c')
-rw-r--r--target/s390x/mmu_helper.c23
1 files changed, 20 insertions, 3 deletions
diff --git a/target/s390x/mmu_helper.c b/target/s390x/mmu_helper.c
index 31e3f3f415..f477cc006a 100644
--- a/target/s390x/mmu_helper.c
+++ b/target/s390x/mmu_helper.c
@@ -22,6 +22,7 @@
#include "internal.h"
#include "kvm_s390x.h"
#include "sysemu/kvm.h"
+#include "exec/exec-all.h"
#include "trace.h"
#include "hw/s390x/storage-keys.h"
@@ -63,7 +64,9 @@ static void trigger_access_exception(CPUS390XState *env, uint32_t type,
kvm_s390_access_exception(cpu, type, tec);
} else {
CPUState *cs = CPU(cpu);
- stq_phys(cs->as, env->psa + offsetof(LowCore, trans_exc_code), tec);
+ if (type != PGM_ADDRESSING) {
+ stq_phys(cs->as, env->psa + offsetof(LowCore, trans_exc_code), tec);
+ }
trigger_pgm_exception(env, type, ilen);
}
}
@@ -442,7 +445,8 @@ int mmu_translate(CPUS390XState *env, target_ulong vaddr, int rw, uint64_t asc,
/**
* translate_pages: Translate a set of consecutive logical page addresses
- * to absolute addresses
+ * to absolute addresses. This function is used for TCG and old KVM without
+ * the MEMOP interface.
*/
static int translate_pages(S390CPU *cpu, vaddr addr, int nr_pages,
target_ulong *pages, bool is_write)
@@ -458,7 +462,7 @@ static int translate_pages(S390CPU *cpu, vaddr addr, int nr_pages,
}
if (!address_space_access_valid(&address_space_memory, pages[i],
TARGET_PAGE_SIZE, is_write)) {
- program_interrupt(env, PGM_ADDRESSING, ILEN_AUTO);
+ trigger_access_exception(env, PGM_ADDRESSING, ILEN_AUTO, 0);
return -EFAULT;
}
addr += TARGET_PAGE_SIZE;
@@ -478,6 +482,9 @@ static int translate_pages(S390CPU *cpu, vaddr addr, int nr_pages,
*
* Copy from/to guest memory using logical addresses. Note that we inject a
* program interrupt in case there is an error while accessing the memory.
+ *
+ * This function will always return (also for TCG), make sure to call
+ * s390_cpu_virt_mem_handle_exc() to properly exit the CPU loop.
*/
int s390_cpu_virt_mem_rw(S390CPU *cpu, vaddr laddr, uint8_t ar, void *hostbuf,
int len, bool is_write)
@@ -514,6 +521,16 @@ int s390_cpu_virt_mem_rw(S390CPU *cpu, vaddr laddr, uint8_t ar, void *hostbuf,
return ret;
}
+void s390_cpu_virt_mem_handle_exc(S390CPU *cpu, uintptr_t ra)
+{
+ /* KVM will handle the interrupt automatically, TCG has to exit the TB */
+#ifdef CONFIG_TCG
+ if (tcg_enabled()) {
+ cpu_loop_exit_restore(CPU(cpu), ra);
+ }
+#endif
+}
+
/**
* Translate a real address into a physical (absolute) address.
* @param raddr the real address