From 999ceb2c1d77fcb060053427cbeafba8967dd827 Mon Sep 17 00:00:00 2001 From: Jan Kiszka Date: Fri, 19 Feb 2010 18:21:20 +0100 Subject: [PATCH] kvm: Fix eflags corruption in kvm mode This should explain a lot of the weird breakages of upstream KVM we've seen recently (actually we should have seen it much earlier): Stop translating eflags into TCG format when in kvm mode as we never translate it back and rather sync this broken state into the kernel. Signed-off-by: Jan Kiszka Signed-off-by: Avi Kivity --- cpu-exec.c | 12 +++++++----- 1 file changed, 7 insertions(+), 5 deletions(-) diff --git a/cpu-exec.c b/cpu-exec.c index af4595b65ae..3246c9e2c2d 100644 --- a/cpu-exec.c +++ b/cpu-exec.c @@ -232,11 +232,13 @@ int cpu_exec(CPUState *env1) env_to_regs(); #if defined(TARGET_I386) - /* put eflags in CPU temporary format */ - CC_SRC = env->eflags & (CC_O | CC_S | CC_Z | CC_A | CC_P | CC_C); - DF = 1 - (2 * ((env->eflags >> 10) & 1)); - CC_OP = CC_OP_EFLAGS; - env->eflags &= ~(DF_MASK | CC_O | CC_S | CC_Z | CC_A | CC_P | CC_C); + if (!kvm_enabled()) { + /* put eflags in CPU temporary format */ + CC_SRC = env->eflags & (CC_O | CC_S | CC_Z | CC_A | CC_P | CC_C); + DF = 1 - (2 * ((env->eflags >> 10) & 1)); + CC_OP = CC_OP_EFLAGS; + env->eflags &= ~(DF_MASK | CC_O | CC_S | CC_Z | CC_A | CC_P | CC_C); + } #elif defined(TARGET_SPARC) #elif defined(TARGET_M68K) env->cc_op = CC_OP_FLAGS; -- 2.39.5