Xen ignores all updates to cr4, and some versions will kill the domain
if you try to change its value. Just ignore all changes.
Signed-off-by: Jeremy Fitzhardinge <[EMAIL PROTECTED]>
Cc: Andi Kleen <[EMAIL PROTECTED]>
---
arch/i386/xen/enlighten.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
===================================================================
--- a/arch/i386/xen/enlighten.c
+++ b/arch/i386/xen/enlighten.c
@@ -625,8 +625,8 @@ static unsigned long xen_read_cr2_direct
static void xen_write_cr4(unsigned long cr4)
{
- /* never allow TSC to be disabled */
- native_write_cr4(cr4 & ~X86_CR4_TSD);
+ /* Just ignore cr4 changes; Xen doesn't allow us to do
+ anything anyway. */
}
static unsigned long xen_read_cr3(void)
-
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