x86/mtrr: Remove physical address size calculation

Browse source

The physical address width calculation in mtrr_bp_init() can easily be
replaced with using the already available value x86_phys_bits from
struct cpuinfo_x86.

The same information source can be used in mtrr/cleanup.c, removing the
need to pass that value on to mtrr_cleanup().

In print_mtrr_state() use x86_phys_bits instead of recalculating it
from size_or_mask.

Move setting of size_or_mask and size_and_mask into a dedicated new
function in mtrr/generic.c, enabling to make those 2 variables static,
as they are used in generic.c only now.

Signed-off-by: Juergen Gross <jgross@suse.com>
Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de>
Tested-by: Michael Kelley <mikelley@microsoft.com>
Link: https://lore.kernel.org/r/20230502120931.20719-2-jgross@suse.com
Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de>

...

This commit is contained in:

Juergen Gross 2023-05-02 14:09:16 +02:00 • committed by Borislav Petkov (AMD)

parent ac9a78681b

commit f6b980646b

4 changed files with 29 additions and 64 deletions

Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL

Download patch file Download diff file Expand all files Collapse all files

16

arch/x86/kernel/cpu/mtrr/cleanup.c

View file

12

arch/x86/kernel/cpu/mtrr/generic.c

View file

61

arch/x86/kernel/cpu/mtrr/mtrr.c

View file

4

arch/x86/kernel/cpu/mtrr/mtrr.h

View file