Chenyi Qiang e8ea85fb28 KVM: X86: Add support for the emulation of DR6_BUS_LOCK bit ... Bus lock debug exception introduces a new bit DR6_BUS_LOCK (bit 11 of DR6) to indicate that bus lock #DB exception is generated. The set/clear of DR6_BUS_LOCK is similar to the DR6_RTM. The processor clears DR6_BUS_LOCK when the exception is generated. For all other #DB, the processor sets this bit to 1. Software #DB handler should set this bit before returning to the interrupted task. In VMM, to avoid breaking the CPUs without bus lock #DB exception support, activate the DR6_BUS_LOCK conditionally in DR6_FIXED_1 bits. When intercepting the #DB exception caused by bus locks, bit 11 of the exit qualification is set to identify it. The VMM should emulate the exception by clearing the bit 11 of the guest DR6. Co-developed-by: Xiaoyao Li <xiaoyao.li@intel.com> Signed-off-by: Xiaoyao Li <xiaoyao.li@intel.com> Signed-off-by: Chenyi Qiang <chenyi.qiang@intel.com> Message-Id: <20210202090433.13441-3-chenyi.qiang@intel.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>		2021-05-07 06:06:20 -04:00
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asm	KVM: X86: Add support for the emulation of DR6_BUS_LOCK bit	2021-05-07 06:06:20 -04:00
uapi/asm	KVM: nVMX: Properly pad 'struct kvm_vmx_nested_state_hdr'	2021-05-07 06:06:13 -04:00