Peter Feiner c171caf7be kvm: vmx: ensure VMCS is current while enabling PML ... commit 4e59516a12a6ef6dcb660cb3a3f70c64bd60cfec upstream. Between loading the new VMCS and enabling PML, the CPU was unpinned. If the vCPU thread were migrated to another CPU in the interim (e.g., due to preemption or sleeping alloc_page), then the VMWRITEs to enable PML would target the wrong VMCS -- or no VMCS at all: [ 2087.266950] vmwrite error: reg 200e value 3fe1d52000 (err -506126336) [ 2087.267062] vmwrite error: reg 812 value 1ff (err 511) [ 2087.267125] vmwrite error: reg 401e value 12229c00 (err 304258048) This patch ensures that the VMCS remains current while enabling PML by doing the VMWRITEs while the CPU is pinned. Allocation of the PML buffer is hoisted out of the critical section. Signed-off-by: Peter Feiner <pfeiner@google.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> Cc: "Herongguang (Stephen)" <herongguang.he@huawei.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>		2017-02-26 11:07:52 +01:00
..
boot	x86/build: Build compressed x86 kernels as PIE	2016-10-20 10:00:47 +02:00
configs	kconfig: tinyconfig: provide whole choice blocks to avoid warnings	2016-09-24 10:07:42 +02:00
crypto	crypto: sha1-mb - use corrcet pointer while completing jobs	2016-05-04 14:48:44 -07:00
entry	ftrace/x86_32: Set ftrace_stub to weak to prevent gcc from using short jumps to it	2017-01-09 08:07:50 +01:00
ia32
include	Fix potential infoleak in older kernels	2016-11-10 16:36:34 +01:00
kernel	Revert "x86/ioapic: Restore IO-APIC irq_chip retrigger callback"	2017-02-14 15:22:50 -08:00
kvm	kvm: vmx: ensure VMCS is current while enabling PML	2017-02-26 11:07:52 +01:00
lguest
lib	x86/uaccess/64: Handle the caching of 4-byte nocache copies properly in __copy_user_nocache()	2016-02-25 12:01:13 -08:00
math-emu
mm	Revert "x86/mm: Expand the exception table logic to allow new handling options"	2016-10-31 19:56:26 -06:00
net
oprofile
pci	x86/PCI: Ignore _CRS on Supermicro X8DTH-i/6/iF/6F	2017-01-26 08:23:47 +01:00
platform	x86/platform/goldfish: Prevent unconditional loading	2017-02-26 11:07:51 +01:00
power
purgatory	x86/kexec: add -fno-PIE	2016-11-26 09:54:52 +01:00
ras
realmode
tools
um
video
xen	x86/xen: fix upper bound of pmd loop in xen_cleanhighmap()	2016-11-10 16:36:36 +01:00
.gitignore
Kbuild
Kconfig	x86/microcode: Untangle from BLK_DEV_INITRD	2016-04-12 09:08:32 -07:00
Kconfig.cpu
Kconfig.debug
Makefile
Makefile_32.cpu
Makefile.um