diff options
| author |   Juergen Gross <jgross@suse.com> | 2023-05-02 14:09:16 +0200 |
|---|---|---|
| committer |   Borislav Petkov (AMD) <bp@alien8.de> | 2023-05-09 14:13:30 +0200 |
| commit | f6b980646b93a8c585b4ed991b8a34e8fc6ef847 (patch) | |
| tree | 05b9feaeca4b5d4b3f32dbabb88f523ca075a045 /arch/x86/kernel/cpu/mtrr/mtrr.h | |
| parent | Linux 6.4-rc1 (diff) | |
| download | wireguard-linux-f6b980646b93a8c585b4ed991b8a34e8fc6ef847.tar.xz wireguard-linux-f6b980646b93a8c585b4ed991b8a34e8fc6ef847.zip | |
x86/mtrr: Remove physical address size calculation
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>
Diffstat (limited to 'arch/x86/kernel/cpu/mtrr/mtrr.h')
| -rw-r--r-- | arch/x86/kernel/cpu/mtrr/mtrr.h | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/arch/x86/kernel/cpu/mtrr/mtrr.h b/arch/x86/kernel/cpu/mtrr/mtrr.h index 02eb5871492d..a00987e6cc1c 100644 --- a/arch/x86/kernel/cpu/mtrr/mtrr.h +++ b/arch/x86/kernel/cpu/mtrr/mtrr.h @@ -51,7 +51,6 @@ void fill_mtrr_var_range(unsigned int index, u32 base_lo, u32 base_hi, u32 mask_lo, u32 mask_hi); bool get_mtrr_state(void); -extern u64 size_or_mask, size_and_mask; extern const struct mtrr_ops *mtrr_if; #define is_cpu(vnd) (mtrr_if && mtrr_if->vendor == X86_VENDOR_##vnd) @@ -60,6 +59,7 @@ extern unsigned int num_var_ranges; extern u64 mtrr_tom2; extern struct mtrr_state_type mtrr_state; +void mtrr_set_mask(void); void mtrr_state_warn(void); const char *mtrr_attrib_to_str(int x); void mtrr_wrmsr(unsigned, unsigned, unsigned); @@ -70,4 +70,4 @@ extern const struct mtrr_ops cyrix_mtrr_ops; extern const struct mtrr_ops centaur_mtrr_ops; extern int changed_by_mtrr_cleanup; -extern int mtrr_cleanup(unsigned address_bits); +extern int mtrr_cleanup(void); |