diff options
| author | Paolo Bonzini <pbonzini@redhat.com> | 2017-02-16 12:30:05 +0100 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2017-02-16 18:37:01 +0100 |
| commit | 65c9d60a3ad3249784348824eca69acac455bc02 (patch) | |
| tree | b0fb43c0c2841ae1f62b5342e376a4d46accc9e9 /target/i386/seg_helper.c | |
| parent | f47291b7a7ffa8854300283d4773ed17d5d581c1 (diff) | |
target-i386: correctly propagate retaddr into SVM helpers
Commit 2afbdf8 ("target-i386: exception handling for memory helpers",
2015-09-15) changed tlb_fill's cpu_restore_state+raise_exception_err
to raise_exception_err_ra. After this change, the cpu_restore_state
and raise_exception_err's cpu_loop_exit are merged into
raise_exception_err_ra's cpu_loop_exit_restore.
This actually fixed some bugs, but when SVM is enabled there is a
second path from raise_exception_err_ra to cpu_loop_exit. This is
the VMEXIT path, and now cpu_vmexit is called without a
cpu_restore_state before.
The fix is to pass the retaddr to cpu_vmexit (via
cpu_svm_check_intercept_param). All helpers can now use GETPC() to pass
the correct retaddr, too.
Cc: qemu-stable@nongnu.org
Fixes: 2afbdf84807d673eb682cb78158e11cdacbf4673
Reported-by: Alexander Boettcher <alexander.boettcher@genode-labs.com>
Tested-by: Alexander Boettcher <alexander.boettcher@genode-labs.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'target/i386/seg_helper.c')
| -rw-r--r-- | target/i386/seg_helper.c | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/target/i386/seg_helper.c b/target/i386/seg_helper.c index d24574da7f..5c845dc25c 100644 --- a/target/i386/seg_helper.c +++ b/target/i386/seg_helper.c @@ -1335,7 +1335,7 @@ bool x86_cpu_exec_interrupt(CPUState *cs, int interrupt_request) } else if (env->hflags2 & HF2_GIF_MASK) { if ((interrupt_request & CPU_INTERRUPT_SMI) && !(env->hflags & HF_SMM_MASK)) { - cpu_svm_check_intercept_param(env, SVM_EXIT_SMI, 0); + cpu_svm_check_intercept_param(env, SVM_EXIT_SMI, 0, 0); cs->interrupt_request &= ~CPU_INTERRUPT_SMI; do_smm_enter(cpu); ret = true; @@ -1356,7 +1356,7 @@ bool x86_cpu_exec_interrupt(CPUState *cs, int interrupt_request) (env->eflags & IF_MASK && !(env->hflags & HF_INHIBIT_IRQ_MASK))))) { int intno; - cpu_svm_check_intercept_param(env, SVM_EXIT_INTR, 0); + cpu_svm_check_intercept_param(env, SVM_EXIT_INTR, 0, 0); cs->interrupt_request &= ~(CPU_INTERRUPT_HARD | CPU_INTERRUPT_VIRQ); intno = cpu_get_pic_interrupt(env); @@ -1372,7 +1372,7 @@ bool x86_cpu_exec_interrupt(CPUState *cs, int interrupt_request) !(env->hflags & HF_INHIBIT_IRQ_MASK)) { int intno; /* FIXME: this should respect TPR */ - cpu_svm_check_intercept_param(env, SVM_EXIT_VINTR, 0); + cpu_svm_check_intercept_param(env, SVM_EXIT_VINTR, 0, 0); intno = x86_ldl_phys(cs, env->vm_vmcb + offsetof(struct vmcb, control.int_vector)); qemu_log_mask(CPU_LOG_TB_IN_ASM, |