diff options
| author | Andrew Cooper <andrew.cooper3@citrix.com> | 2019-04-04 19:39:08 +0100 |
|---|---|---|
| committer | Andrew Cooper <andrew.cooper3@citrix.com> | 2019-04-05 11:09:08 +0100 |
| commit | 0cd074144cbb32de53e98eaad7d0ecd9259f219b (patch) | |
| tree | 178514b060a36cfa421dff2cbb144403b051f77c /xen/arch/x86/acpi/cpufreq/cpufreq.c | |
| parent | f2f8c67ed9e5ec2c61c8d70653cc35d5427efe82 (diff) | |
x86/cpu: Renumber X86_VENDOR_* to form a bitmap
CPUs from different vendors sometimes share characteristics. All users of
X86_VENDOR_* are now direct equal/not-equal comparisons. By expressing the
X86_VENDOR_* constants in a bitmap fashon, we can more concicely and
efficiently test whether a vendor is one of a group.
Update all parts of the code which can already benefit from this improvement.
Signed-off-by: Andrew Cooper <andrew.cooper3@citrix.com>
Reviewed-by: Jan Beulich <jbeulich@suse.com>
Diffstat (limited to 'xen/arch/x86/acpi/cpufreq/cpufreq.c')
| -rw-r--r-- | xen/arch/x86/acpi/cpufreq/cpufreq.c | 3 |
1 files changed, 1 insertions, 2 deletions
diff --git a/xen/arch/x86/acpi/cpufreq/cpufreq.c b/xen/arch/x86/acpi/cpufreq/cpufreq.c index 844ab85cd3..f4e13e10e8 100644 --- a/xen/arch/x86/acpi/cpufreq/cpufreq.c +++ b/xen/arch/x86/acpi/cpufreq/cpufreq.c @@ -661,8 +661,7 @@ int cpufreq_cpu_init(unsigned int cpuid) int ret; /* Currently we only handle Intel and AMD processor */ - if ( (boot_cpu_data.x86_vendor == X86_VENDOR_INTEL ) || - (boot_cpu_data.x86_vendor == X86_VENDOR_AMD ) ) + if ( boot_cpu_data.x86_vendor & (X86_VENDOR_INTEL | X86_VENDOR_AMD) ) ret = cpufreq_add_cpu(cpuid); else ret = -EFAULT; |