[PATCH v3 2/9] target/ppc: Fix PMU MMCR0[PMCjCE] bit in hflags calculation

[Nicholas Piggin <npiggin@gmail.com>]

A store to MMCR0 with PMCjCE=1 fails to update hflags correctly and
results in hflags mismatch:

  qemu: fatal: TCG hflags mismatch (current:0x2408003d rebuilt:0x240a003d)

This can be reproduced by running perf on a recent machine.

Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
---
Since v2: new patch.

 target/ppc/power8-pmu.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/target/ppc/power8-pmu.c b/target/ppc/power8-pmu.c
index 64a64865d7..29e0012ed6 100644
--- a/target/ppc/power8-pmu.c
+++ b/target/ppc/power8-pmu.c
@@ -236,14 +236,16 @@ void helper_store_mmcr0(CPUPPCState *env, target_ulong value)
 {
     bool hflags_pmcc0 = (value & MMCR0_PMCC0) != 0;
     bool hflags_pmcc1 = (value & MMCR0_PMCC1) != 0;
+    bool hflags_pmcjce = (value & MMCR0_PMCjCE) != 0;
 
     pmu_update_cycles(env);
 
     env->spr[SPR_POWER_MMCR0] = value;
 
-    /* MMCR0 writes can change HFLAGS_PMCC[01] and HFLAGS_INSN_CNT */
+    /* MMCR0 writes can change HFLAGS_PMCC[01], PMCjCE, and HFLAGS_INSN_CNT */
     env->hflags = deposit32(env->hflags, HFLAGS_PMCC0, 1, hflags_pmcc0);
     env->hflags = deposit32(env->hflags, HFLAGS_PMCC1, 1, hflags_pmcc1);
+    env->hflags = deposit32(env->hflags, HFLAGS_PMCJCE, 1, hflags_pmcjce);
 
     pmu_update_summaries(env);
 
-- 
2.40.1