Commit 389a3c02 authored Sep 18, 2007 by Jeremy Fitzhardinge Committed by Linus Torvalds Sep 19, 2007

xen: don't bother trying to set cr4



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 <jeremy@xensource.com>
Cc: Andi Kleen <ak@suse.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

parent 248bdd5e

arch/i386/xen/enlighten.c

+2 −2

Original line number	Diff line number	Diff line
		@@ -623,8 +623,8 @@ static unsigned long xen_read_cr2_direct(void)

		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)