android/android_kernel_xiaomi_sm8450
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

xen: allow some cr4 updates

Browse Source 
The guest can legitimately change things like cr4.OSFXSR and
OSXMMEXCPT, so let it.

Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
This commit is contained in:
Jeremy Fitzhardinge
2008-05-26 23:31:04 +01:00
committed by Thomas Gleixner
parent 349c709f42
commit 2956a3511c
1 changed files with 4 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

6
arch/x86/xen/enlighten.c
View File

@ -648,8 +648,10 @@ static unsigned long xen_read_cr2_direct(void)
static void xen_write_cr4(unsigned long cr4) static void xen_write_cr4(unsigned long cr4)
{ {
/* Just ignore cr4 changes; Xen doesn't allow us to do cr4 &= ~X86_CR4_PGE;
anything anyway. */ cr4 &= ~X86_CR4_PSE;
native_write_cr4(cr4);
} }
static unsigned long xen_read_cr3(void) static unsigned long xen_read_cr3(void)