github-mirror/linux
1
0
Fork 0
mirror of https://github.com/torvalds/linux.git synced 2026-06-10 07:32:29 +02:00
Code Issues Actions Packages Projects Releases Wiki Activity Graph
fa17eb7500
linux/arch
History
Zhanghaoyu (A) e6e045d591 KVM: x86: remove vcpu's CPL check in host-invoked XCR set 
commit 764bcbc5a6 upstream.

__kvm_set_xcr function does the CPL check when set xcr. __kvm_set_xcr is
called in two flows, one is invoked by guest, call stack shown as below,

  handle_xsetbv(or xsetbv_interception)
    kvm_set_xcr
      __kvm_set_xcr

the other one is invoked by host, for example during system reset:

  kvm_arch_vcpu_ioctl
    kvm_vcpu_ioctl_x86_set_xcrs
      __kvm_set_xcr

The former does need the CPL check, but the latter does not.

Signed-off-by: Zhang Haoyu <haoyu.zhang@huawei.com>
[Tweaks to commit message. - Paolo]
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-06-27 11:27:30 -07:00
..
alpha alpha: Add irongate_io to PCI bus resources 2013-04-12 09:38:45 -07:00
arm Kirkwood: Enable PCIe port 1 on QNAP TS-11x/TS-21x 2013-06-07 12:49:13 -07:00
avr32 avr32: fix relocation check for signed 18-bit offset 2013-06-07 12:49:10 -07:00
blackfin blackfin: fix ifdef fustercluck in mach-bf538/boards/ezkit.c 2012-04-26 14:46:51 -04:00
c6x irq: Kill pointless irqd_to_hw export 2012-04-10 22:39:17 -06:00
cris signal: Define __ARCH_HAS_SA_RESTORER so we know whether to clear sa_restorer 2013-04-05 10:04:14 -07:00
frv frv: Add missing RCU idle APIs on idle loop 2012-10-13 05:38:54 +09:00
h8300 signal: Define __ARCH_HAS_SA_RESTORER so we know whether to clear sa_restorer 2013-04-05 10:04:14 -07:00
hexagon hexagon: add missing cpu.h include 2012-04-23 12:57:24 -05:00
ia64 Wrong asm register contraints in the kvm implementation 2013-05-07 19:51:55 -07:00
m32r signal: Define __ARCH_HAS_SA_RESTORER so we know whether to clear sa_restorer 2013-04-05 10:04:14 -07:00
m68k m68k/mac: Fix unexpected interrupt with CONFIG_EARLY_PRINTK 2013-06-07 12:49:34 -07:00
microblaze microblaze: Do not select GENERIC_GPIO by default 2012-06-10 00:36:05 +09:00
mips MIPS: Fix poweroff failure when HOTPLUG_CPU configured. 2013-01-17 08:50:42 -08:00
mn10300 signal: Define __ARCH_HAS_SA_RESTORER so we know whether to clear sa_restorer 2013-04-05 10:04:14 -07:00
openrisc Disintegrate and delete asm/system.h 2012-03-28 15:58:21 -07:00
parisc Purge existing TLB entries in set_pte_at and ptep_set_wrprotect 2013-02-28 06:59:05 -08:00
powerpc powerpc: Fix missing/delayed calls to irq_work 2013-06-20 11:58:47 -07:00
s390 signal: Define __ARCH_HAS_SA_RESTORER so we know whether to clear sa_restorer 2013-04-05 10:04:14 -07:00
score score: Add missing RCU idle APIs on idle loop 2012-10-13 05:38:55 +09:00
sh sh: Fix FDPIC binary loader 2013-01-21 11:45:14 -08:00
sparc sparc64: Fix race in TLB batch processing. 2013-05-01 09:41:03 -07:00
tile tilepro: work around module link error with gcc 4.7 2013-06-27 11:27:30 -07:00
um um: Implement a custom pte_same() function 2012-06-01 15:18:18 +08:00
unicore32 Merge branch 'for-linus' of git://git.linaro.org/people/mszyprowski/linux-dma-mapping 2012-04-04 17:13:43 -07:00
x86 KVM: x86: remove vcpu's CPL check in host-invoked XCR set 2013-06-27 11:27:30 -07:00
xtensa signal: Define __ARCH_HAS_SA_RESTORER so we know whether to clear sa_restorer 2013-04-05 10:04:14 -07:00
.gitignore
Kconfig Merge git://git.kernel.org/pub/scm/linux/kernel/git/cmetcalf/linux-tile 2012-03-29 14:49:45 -07:00