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 <toshi.k...@hpe.com>
> Cc: Konrad Rzeszutek Wilk <konrad.w...@oracle.com>
> Cc: Borislav Petkov <b...@suse.de>
> Cc: Luis R. Rodriguez <mcg...@suse.com>
> Cc: Juergen Gross <jgr...@suse.com>
> Cc: Ingo Molnar <mi...@kernel.org>
> Cc: H. Peter Anvin <h...@zytor.com>
> Cc: Thomas Gleixner <t...@linutronix.de>
> ---
> 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?
--
Regards/Gruss,
Boris.
SUSE Linux GmbH, GF: Felix Imendörffer, Jane Smithard, Graham Norton, HRB 21284
(AG Nürnberg)
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