On 22/03/16 18:02, Borislav Petkov wrote: > On Wed, Mar 16, 2016 at 06:46:58PM -0600, Toshi Kani wrote: >> Xen supports PAT without MTRR for its guests. In order to >> enable WC attribute, it was necessary for xen_start_kernel() >> to call pat_init_cache_modes() to update PAT table before >> starting guest kernel. >> >> Now that the kernel initializes PAT table to the BIOS handoff >> state when MTRR is disabled, this Xen-specific PAT init code >> is no longer necessary. Delete it from xen_start_kernel(). >> >> Also change pat_init_cache_modes() to a static function since >> PAT table should not be tweaked by other modules. >> >> Signed-off-by: Toshi Kani <[email protected]> >> Cc: Konrad Rzeszutek Wilk <[email protected]> >> Cc: Borislav Petkov <[email protected]> >> Cc: Luis R. Rodriguez <[email protected]> >> Cc: Juergen Gross <[email protected]> >> Cc: Ingo Molnar <[email protected]> >> Cc: H. Peter Anvin <[email protected]> >> Cc: Thomas Gleixner <[email protected]> >> --- >> arch/x86/include/asm/pat.h | 1 - >> arch/x86/mm/pat.c | 2 +- >> arch/x86/xen/enlighten.c | 9 --------- >> 3 files changed, 1 insertion(+), 11 deletions(-) > > Jürgen, ack?
Yes, seems to be okay. Acked-by: Juergen Gross <[email protected]> Juergen
