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| author | Chenyi Qiang <chenyi.qiang@intel.com> | 2021-02-02 10:04:31 +0100 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2021-02-04 11:27:27 +0100 |
| commit | 9a3ecd5e2aa10af18d0d5a055122d6cc0b0944c7 (patch) | |
| tree | 905d8dfd37245bc4bcca31ae1da03ffbad9f4431 /arch/x86/kvm/emulate.c | |
| parent | selftests: kvm/x86: add test for pmu msr MSR_IA32_PERF_CAPABILITIES (diff) | |
| download | linux-9a3ecd5e2aa10af18d0d5a055122d6cc0b0944c7.tar.xz linux-9a3ecd5e2aa10af18d0d5a055122d6cc0b0944c7.zip | |
KVM: X86: Rename DR6_INIT to DR6_ACTIVE_LOW
DR6_INIT contains the 1-reserved bits as well as the bit that is cleared
to 0 when the condition (e.g. RTM) happens. The value can be used to
initialize dr6 and also be the XOR mask between the #DB exit
qualification (or payload) and DR6.
Concerning that DR6_INIT is used as initial value only once, rename it
to DR6_ACTIVE_LOW and apply it in other places, which would make the
incoming changes for bus lock debug exception more simple.
Signed-off-by: Chenyi Qiang <chenyi.qiang@intel.com>
Message-Id: <20210202090433.13441-2-chenyi.qiang@intel.com>
[Define DR6_FIXED_1 from DR6_ACTIVE_LOW and DR6_VOLATILE. - Paolo]
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'arch/x86/kvm/emulate.c')
| -rw-r--r-- | arch/x86/kvm/emulate.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/x86/kvm/emulate.c b/arch/x86/kvm/emulate.c index 66a08322988f..612ee691065f 100644 --- a/arch/x86/kvm/emulate.c +++ b/arch/x86/kvm/emulate.c @@ -4329,7 +4329,7 @@ static int check_dr_read(struct x86_emulate_ctxt *ctxt) ctxt->ops->get_dr(ctxt, 6, &dr6); dr6 &= ~DR_TRAP_BITS; - dr6 |= DR6_BD | DR6_RTM; + dr6 |= DR6_BD | DR6_ACTIVE_LOW; ctxt->ops->set_dr(ctxt, 6, dr6); return emulate_db(ctxt); } |