Borislav Petkov a80c4ec10e x86/kvm/pmu: Set AMD's virt PMU version to 1 ... After commit: 672ff6cff8 ("KVM: x86: Raise #GP when guest vCPU do not support PMU") my AMD guests started #GPing like this: general protection fault: 0000 [#1] PREEMPT SMP CPU: 1 PID: 4355 Comm: bash Not tainted 5.1.0-rc6+ #3 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 RIP: 0010:x86_perf_event_update+0x3b/0xa0 with Code: pointing to RDPMC. It is RDPMC because the guest has the hardware watchdog CONFIG_HARDLOCKUP_DETECTOR_PERF enabled which uses perf. Instrumenting kvm_pmu_rdpmc() some, showed that it fails due to: if (!pmu->version) return 1; which the above commit added. Since AMD's PMU leaves the version at 0, that causes the #GP injection into the guest. Set pmu->version arbitrarily to 1 and move it above the non-applicable struct kvm_pmu members. Signed-off-by: Borislav Petkov <bp@suse.de> Cc: "H. Peter Anvin" <hpa@zytor.com> Cc: Ingo Molnar <mingo@redhat.com> Cc: Janakarajan Natarajan <Janakarajan.Natarajan@amd.com> Cc: kvm@vger.kernel.org Cc: Liran Alon <liran.alon@oracle.com> Cc: Mihai Carabas <mihai.carabas@oracle.com> Cc: Paolo Bonzini <pbonzini@redhat.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: "Radim Krčmář" <rkrcmar@redhat.com> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Tom Lendacky <thomas.lendacky@amd.com> Cc: x86@kernel.org Cc: stable@vger.kernel.org Fixes: 672ff6cff8 ("KVM: x86: Raise #GP when guest vCPU do not support PMU") Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>		2019-05-24 21:27:13 +02:00
..
boot
configs
crypto
entry	Merge branch 'fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs	2019-05-17 09:46:31 -07:00
events	* ARM: support for SVE and Pointer Authentication in guests, PMU improvements	2019-05-17 10:33:30 -07:00
hyperv
ia32
include	Merge branch 'core-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2019-05-19 10:23:24 -07:00
kernel	treewide: prefix header search paths with $(srctree)/	2019-05-18 11:49:57 +09:00
kvm	x86/kvm/pmu: Set AMD's virt PMU version to 1	2019-05-24 21:27:13 +02:00
lib
math-emu
mm	Kbuild updates for v5.2 (2nd)	2019-05-19 11:53:58 -07:00
net
oprofile
pci
platform	power supply and reset changes for the v5.2 series	2019-05-15 18:50:40 -07:00
power
purgatory
ras
realmode
tools
um
video
xen	xen: fixes and features for 5.2-rc1	2019-05-15 18:44:52 -07:00
.gitignore
Kbuild
Kconfig	Merge branch 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2019-05-16 11:02:27 -07:00
Kconfig.cpu
Kconfig.debug	compiler: allow all arches to enable CONFIG_OPTIMIZE_INLINING	2019-05-14 19:52:48 -07:00
Makefile
Makefile_32.cpu
Makefile.um