In the event that a guest process attempts to access memory that has been poisoned in response to a deferred uncorrected MCE, an AMD system will currently generate a SIGBUS error which will result in the entire guest being shutdown. Ideally, we only want to kill the guest process that accessed poisoned memory in this case.
This support has been included in qemu for Intel hosts for a long time, but there are a couple of changes needed for AMD hosts. First, we will need to expose the SUCCOR cpuid bit to guests. Second, we need to modify the MCE injection code to avoid Intel specific behavior when we are running on an AMD host. John Allen (2): i386: Add support for SUCCOR feature i386: Fix MCE support for AMD hosts target/i386/cpu.c | 2 +- target/i386/cpu.h | 4 ++++ target/i386/helper.c | 4 ++++ target/i386/kvm/kvm.c | 17 +++++++++++------ 4 files changed, 20 insertions(+), 7 deletions(-) -- 2.39.3
