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target-ppc: force update of msr bits in cpu_post_load 

Since env->msr has already been restored by the time cpu_post_load is called,
make sure that ppc_store_msr() is explicitly called with all msr bits except
MSR_TGPR marked as invalid.

This solves the issue where MSR flags aren't set correctly when restoring a VM
snapshot, in particular the internal env->excp_prefix value when MSR_EP has
been altered by a guest.

Signed-off-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
Signed-off-by: Alexander Graf <agraf@suse.de>
This commit is contained in:
Mark Cave-Ayland 2015-02-09 22:40:48 +00:00 committed by Alexander Graf
parent 2828c4cd92
commit 2360b6e84f
1 changed files with 7 additions and 1 deletions
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8
target-ppc/machine.c
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@ -159,6 +159,7 @@ static int cpu_post_load(void *opaque, int version_id)
PowerPCCPU *cpu = opaque;
CPUPPCState *env = &cpu->env;
int i;
target_ulong msr;
/*
* We always ignore the source PVR. The user or management
@ -190,7 +191,12 @@ static int cpu_post_load(void *opaque, int version_id)
/* Restore htab_base and htab_mask variables */
ppc_store_sdr1(env, env->spr[SPR_SDR1]);
}
hreg_compute_hflags(env);
/* Mark msr bits except MSR_TGPR invalid before restoring */
msr = env->msr;
env->msr ^= ~(1ULL << MSR_TGPR);
ppc_store_msr(env, msr);
hreg_compute_mem_idx(env);
return 0;