aboutsummaryrefslogtreecommitdiff
path: root/target-ppc
diff options
context:
space:
mode:
authorAneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>2014-02-20 18:52:17 +0100
committerAlexander Graf <agraf@suse.de>2014-03-05 03:07:02 +0100
commitf3c75d42adbba553eaf218a832d4fbea32c8f7b8 (patch)
tree632fbedc382ce1a97ee5cc21a55dd61f8a5a4c7d /target-ppc
parent3707cd62db79ba965a211b9e2bb808792ae7343a (diff)
downloadqemu-arm-f3c75d42adbba553eaf218a832d4fbea32c8f7b8.tar.gz
target-ppc: Fix htab_mask calculation
Correctly update the htab_mask using the return value of KVM_PPC_ALLOCATE_HTAB ioctl. Also we don't update sdr1 on GET_SREGS for HV. We check for external htab and if found true, we don't need to update sdr1 Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com> [ fixed pte group offset computation in ppc_hash64_htab_lookup() that caused TCG to fail, Greg Kurz <gkurz@linux.vnet.ibm.com> ] Signed-off-by: Greg Kurz <gkurz@linux.vnet.ibm.com> Signed-off-by: Alexander Graf <agraf@suse.de>
Diffstat (limited to 'target-ppc')
-rw-r--r--target-ppc/cpu.h1
-rw-r--r--target-ppc/kvm.c4
-rw-r--r--target-ppc/machine.c11
-rw-r--r--target-ppc/misc_helper.c4
-rw-r--r--target-ppc/mmu-hash64.c4
-rw-r--r--target-ppc/mmu_helper.c3
6 files changed, 18 insertions, 9 deletions
diff --git a/target-ppc/cpu.h b/target-ppc/cpu.h
index 7ccf4c6e15..44ade0c173 100644
--- a/target-ppc/cpu.h
+++ b/target-ppc/cpu.h
@@ -966,6 +966,7 @@ struct CPUPPCState {
#endif
/* segment registers */
hwaddr htab_base;
+ /* mask used to normalize hash value to PTEG index */
hwaddr htab_mask;
target_ulong sr[32];
/* externally stored hash table */
diff --git a/target-ppc/kvm.c b/target-ppc/kvm.c
index 33d69d2e56..969ebddd4c 100644
--- a/target-ppc/kvm.c
+++ b/target-ppc/kvm.c
@@ -1031,7 +1031,9 @@ int kvm_arch_get_registers(CPUState *cs)
return ret;
}
- ppc_store_sdr1(env, sregs.u.s.sdr1);
+ if (!env->external_htab) {
+ ppc_store_sdr1(env, sregs.u.s.sdr1);
+ }
/* Sync SLB */
#ifdef TARGET_PPC64
diff --git a/target-ppc/machine.c b/target-ppc/machine.c
index 12c174f7f3..2d46ceccca 100644
--- a/target-ppc/machine.c
+++ b/target-ppc/machine.c
@@ -70,7 +70,9 @@ static int cpu_load_old(QEMUFile *f, void *opaque, int version_id)
qemu_get_betls(f, &env->pb[i]);
for (i = 0; i < 1024; i++)
qemu_get_betls(f, &env->spr[i]);
- ppc_store_sdr1(env, sdr1);
+ if (!env->external_htab) {
+ ppc_store_sdr1(env, sdr1);
+ }
qemu_get_be32s(f, &env->vscr);
qemu_get_be64s(f, &env->spe_acc);
qemu_get_be32s(f, &env->spe_fscr);
@@ -179,9 +181,10 @@ static int cpu_post_load(void *opaque, int version_id)
env->IBAT[1][i+4] = env->spr[SPR_IBAT4U + 2*i + 1];
}
- /* Restore htab_base and htab_mask variables */
- ppc_store_sdr1(env, env->spr[SPR_SDR1]);
-
+ if (!env->external_htab) {
+ /* Restore htab_base and htab_mask variables */
+ ppc_store_sdr1(env, env->spr[SPR_SDR1]);
+ }
hreg_compute_hflags(env);
hreg_compute_mem_idx(env);
diff --git a/target-ppc/misc_helper.c b/target-ppc/misc_helper.c
index 616aab6fb6..dc2ebfc452 100644
--- a/target-ppc/misc_helper.c
+++ b/target-ppc/misc_helper.c
@@ -38,7 +38,9 @@ void helper_store_dump_spr(CPUPPCState *env, uint32_t sprn)
void helper_store_sdr1(CPUPPCState *env, target_ulong val)
{
- ppc_store_sdr1(env, val);
+ if (!env->external_htab) {
+ ppc_store_sdr1(env, val);
+ }
}
void helper_store_hid0_601(CPUPPCState *env, target_ulong val)
diff --git a/target-ppc/mmu-hash64.c b/target-ppc/mmu-hash64.c
index c1c33b0f9a..739dece64a 100644
--- a/target-ppc/mmu-hash64.c
+++ b/target-ppc/mmu-hash64.c
@@ -375,7 +375,7 @@ static hwaddr ppc_hash64_htab_lookup(CPUPPCState *env,
" vsid=" TARGET_FMT_lx " ptem=" TARGET_FMT_lx
" hash=" TARGET_FMT_plx "\n",
env->htab_base, env->htab_mask, vsid, ptem, hash);
- pteg_off = (hash * HASH_PTEG_SIZE_64) & env->htab_mask;
+ pteg_off = (hash & env->htab_mask) * HASH_PTEG_SIZE_64;
pte_offset = ppc_hash64_pteg_search(env, pteg_off, 0, ptem, pte);
if (pte_offset == -1) {
@@ -385,7 +385,7 @@ static hwaddr ppc_hash64_htab_lookup(CPUPPCState *env,
" hash=" TARGET_FMT_plx "\n", env->htab_base,
env->htab_mask, vsid, ptem, ~hash);
- pteg_off = (~hash * HASH_PTEG_SIZE_64) & env->htab_mask;
+ pteg_off = (~hash & env->htab_mask) * HASH_PTEG_SIZE_64;
pte_offset = ppc_hash64_pteg_search(env, pteg_off, 1, ptem, pte);
}
diff --git a/target-ppc/mmu_helper.c b/target-ppc/mmu_helper.c
index 04a840b016..8e2f8e736a 100644
--- a/target-ppc/mmu_helper.c
+++ b/target-ppc/mmu_helper.c
@@ -2014,6 +2014,7 @@ void ppc_tlb_invalidate_one(CPUPPCState *env, target_ulong addr)
void ppc_store_sdr1(CPUPPCState *env, target_ulong value)
{
LOG_MMU("%s: " TARGET_FMT_lx "\n", __func__, value);
+ assert(!env->external_htab);
if (env->spr[SPR_SDR1] != value) {
env->spr[SPR_SDR1] = value;
#if defined(TARGET_PPC64)
@@ -2025,7 +2026,7 @@ void ppc_store_sdr1(CPUPPCState *env, target_ulong value)
" stored in SDR1\n", htabsize);
htabsize = 28;
}
- env->htab_mask = (1ULL << (htabsize + 18)) - 1;
+ env->htab_mask = (1ULL << (htabsize + 18 - 7)) - 1;
env->htab_base = value & SDR_64_HTABORG;
} else
#endif /* defined(TARGET_PPC64) */