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authorXiaoyao Li <xiaoyao.li@intel.com>2020-04-10 13:54:02 +0200
committerBorislav Petkov <bp@suse.de>2020-04-11 16:42:41 +0200
commite6f8b6c12f03818baacc5f504fe83fa5e20771d6 (patch)
tree45e390cc34bd88cc38cc26acc093ca74b59141d6 /usr/.gitignore
parent9de6fe3c28d6d8feadfad907961f1f31b85c6985 (diff)
downloadlinux-stericsson-e6f8b6c12f03818baacc5f504fe83fa5e20771d6.tar.gz
KVM: VMX: Extend VMXs #AC interceptor to handle split lock #AC in guest
Two types of #AC can be generated in Intel CPUs: 1. legacy alignment check #AC 2. split lock #AC Reflect #AC back into the guest if the guest has legacy alignment checks enabled or if split lock detection is disabled. If the #AC is not a legacy one and split lock detection is enabled, then invoke handle_guest_split_lock() which will either warn and disable split lock detection for this task or force SIGBUS on it. [ tglx: Switch it to handle_guest_split_lock() and rename the misnamed helper function. ] Suggested-by: Sean Christopherson <sean.j.christopherson@intel.com> Signed-off-by: Xiaoyao Li <xiaoyao.li@intel.com> Signed-off-by: Sean Christopherson <sean.j.christopherson@intel.com> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Borislav Petkov <bp@suse.de> Acked-by: Paolo Bonzini <pbonzini@redhat.com> Link: https://lkml.kernel.org/r/20200410115517.176308876@linutronix.de
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