Displaying 4 results from an estimated 4 matches for "msr_debugctl".
2017 Sep 26
0
[PATCH v1 4/4] KVM/vmx: enable lbr for the guest
..../qemu-system-x86_64 ...",
which will need lbr to be used in KVM as well.
I think one possible optimization we could do would be to add the LBR
MSRs to auto
switching when the guest requests to enable the feature, and remove them
when
being disabled. This will need to trap guest access to MSR_DEBUGCTL.
Best,
Wei
2017 Sep 25
2
[PATCH v1 4/4] KVM/vmx: enable lbr for the guest
> +static void auto_switch_lbr_msrs(struct vcpu_vmx *vmx)
> +{
> + int i;
> + struct perf_lbr_stack lbr_stack;
> +
> + perf_get_lbr_stack(&lbr_stack);
> +
> + add_atomic_switch_msr(vmx, MSR_LBR_SELECT, 0, 0);
> + add_atomic_switch_msr(vmx, lbr_stack.lbr_tos, 0, 0);
> +
> + for (i = 0; i < lbr_stack.lbr_nr; i++) {
> + add_atomic_switch_msr(vmx,
2017 Sep 25
2
[PATCH v1 4/4] KVM/vmx: enable lbr for the guest
> +static void auto_switch_lbr_msrs(struct vcpu_vmx *vmx)
> +{
> + int i;
> + struct perf_lbr_stack lbr_stack;
> +
> + perf_get_lbr_stack(&lbr_stack);
> +
> + add_atomic_switch_msr(vmx, MSR_LBR_SELECT, 0, 0);
> + add_atomic_switch_msr(vmx, lbr_stack.lbr_tos, 0, 0);
> +
> + for (i = 0; i < lbr_stack.lbr_nr; i++) {
> + add_atomic_switch_msr(vmx,
2018 Oct 11
2
xen_4.11.1~pre.20180911.5acdd26fdc+dfsg-2_multi.changes ACCEPTED into unstable, unstable
...s to honour readonly flag on HVM emulated SCSI disks
XSA-266 CVE-2018-12892
- Fix: Speculative register leakage from lazy FPU context switching
XSA-267 CVE-2018-3665
- Fix: Use of v2 grant tables may cause crash on ARM
XSA-268 CVE-2018-15469
- Fix: x86: Incorrect MSR_DEBUGCTL handling lets guests enable BTS
XSA-269 CVE-2018-15468
- Fix: oxenstored does not apply quota-maxentity
XSA-272 CVE-2018-15470
- Fix: L1 Terminal Fault speculative side channel
XSA-273 CVE-2018-3620
* Merge changes for 4.9 from the ubuntu packaging (thanks, Stefan...