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target-ppc: move sdr1 value change detection logic to helper_store_sdr1() 

Otherwise when cpu_post_load calls ppc_store_sdr1() when restoring a VM
snapshot the value is deemed unchanged and so the internal env->htab*
variables aren't set correctly.

Signed-off-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Alexander Graf <agraf@suse.de>
This commit is contained in:
Mark Cave-Ayland 2015-02-09 22:40:47 +00:00 committed by Alexander Graf
parent 6cb577dde5
commit 2828c4cd92
2 changed files with 21 additions and 21 deletions
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7
target-ppc/misc_helper.c
View File

@ -77,8 +77,13 @@ void helper_msr_facility_check(CPUPPCState *env, uint32_t bit,
void helper_store_sdr1(CPUPPCState *env, target_ulong val)
{
PowerPCCPU *cpu = ppc_env_get_cpu(env);
if (!env->external_htab) {
ppc_store_sdr1(env, val);
if (env->spr[SPR_SDR1] != val) {
ppc_store_sdr1(env, val);
tlb_flush(CPU(cpu), 1);
}
}
}

35
target-ppc/mmu_helper.c
View File

@ -2036,31 +2036,26 @@ void ppc_tlb_invalidate_one(CPUPPCState *env, target_ulong addr)
/* Special registers manipulation */
void ppc_store_sdr1(CPUPPCState *env, target_ulong value)
{
PowerPCCPU *cpu = ppc_env_get_cpu(env);
qemu_log_mask(CPU_LOG_MMU, "%s: " TARGET_FMT_lx "\n", __func__, value);
assert(!env->external_htab);
if (env->spr[SPR_SDR1] != value) {
env->spr[SPR_SDR1] = value;
env->spr[SPR_SDR1] = value;
#if defined(TARGET_PPC64)
if (env->mmu_model & POWERPC_MMU_64) {
target_ulong htabsize = value & SDR_64_HTABSIZE;
if (env->mmu_model & POWERPC_MMU_64) {
target_ulong htabsize = value & SDR_64_HTABSIZE;
if (htabsize > 28) {
fprintf(stderr, "Invalid HTABSIZE 0x" TARGET_FMT_lx
" stored in SDR1\n", htabsize);
htabsize = 28;
}
env->htab_mask = (1ULL << (htabsize + 18 - 7)) - 1;
env->htab_base = value & SDR_64_HTABORG;
} else
#endif /* defined(TARGET_PPC64) */
{
/* FIXME: Should check for valid HTABMASK values */
env->htab_mask = ((value & SDR_32_HTABMASK) << 16) | 0xFFFF;
env->htab_base = value & SDR_32_HTABORG;
if (htabsize > 28) {
fprintf(stderr, "Invalid HTABSIZE 0x" TARGET_FMT_lx
" stored in SDR1\n", htabsize);
htabsize = 28;
}
tlb_flush(CPU(cpu), 1);
env->htab_mask = (1ULL << (htabsize + 18 - 7)) - 1;
env->htab_base = value & SDR_64_HTABORG;
} else
#endif /* defined(TARGET_PPC64) */
{
/* FIXME: Should check for valid HTABMASK values */
env->htab_mask = ((value & SDR_32_HTABMASK) << 16) | 0xFFFF;
env->htab_base = value & SDR_32_HTABORG;
}
}