mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-12-17 23:46:48 +07:00
09dc68d958
struct cpu_dev's c_models is only ever set inside CONFIG_X86_32 conditionals (or code that's being built for 32-bit only), so there's no use of reserving the (empty) space for the model names in a 64-bit kernel. Similarly, c_size_cache is only used in the #else of a CONFIG_X86_64 conditional, so reserving space for (and in one case even initializing) that field is pointless for 64-bit kernels too. While moving both fields to the end of the structure, I also noticed that: - the c_models array size was one too small, potentially causing table_lookup_model() to return garbage on Intel CPUs (intel.c's instance was lacking the sentinel with family being zero), so the patch bumps that by one, - c_models' vendor sub-field was unused (and anyway redundant with the base structure's c_x86_vendor field), so the patch deletes it. Also rename the legacy fields so that their legacy nature stands out and comment their declarations. Signed-off-by: Jan Beulich <jbeulich@suse.com> Link: http://lkml.kernel.org/r/5265036802000078000FC4DB@nat28.tlf.novell.com Signed-off-by: Ingo Molnar <mingo@kernel.org>
49 lines
1.3 KiB
C
49 lines
1.3 KiB
C
#ifndef ARCH_X86_CPU_H
|
|
#define ARCH_X86_CPU_H
|
|
|
|
/* attempt to consolidate cpu attributes */
|
|
struct cpu_dev {
|
|
const char *c_vendor;
|
|
|
|
/* some have two possibilities for cpuid string */
|
|
const char *c_ident[2];
|
|
|
|
void (*c_early_init)(struct cpuinfo_x86 *);
|
|
void (*c_bsp_init)(struct cpuinfo_x86 *);
|
|
void (*c_init)(struct cpuinfo_x86 *);
|
|
void (*c_identify)(struct cpuinfo_x86 *);
|
|
void (*c_detect_tlb)(struct cpuinfo_x86 *);
|
|
int c_x86_vendor;
|
|
#ifdef CONFIG_X86_32
|
|
/* Optional vendor specific routine to obtain the cache size. */
|
|
unsigned int (*legacy_cache_size)(struct cpuinfo_x86 *,
|
|
unsigned int);
|
|
|
|
/* Family/stepping-based lookup table for model names. */
|
|
struct legacy_cpu_model_info {
|
|
int family;
|
|
const char *model_names[16];
|
|
} legacy_models[5];
|
|
#endif
|
|
};
|
|
|
|
struct _tlb_table {
|
|
unsigned char descriptor;
|
|
char tlb_type;
|
|
unsigned int entries;
|
|
/* unsigned int ways; */
|
|
char info[128];
|
|
};
|
|
|
|
#define cpu_dev_register(cpu_devX) \
|
|
static const struct cpu_dev *const __cpu_dev_##cpu_devX __used \
|
|
__attribute__((__section__(".x86_cpu_dev.init"))) = \
|
|
&cpu_devX;
|
|
|
|
extern const struct cpu_dev *const __x86_cpu_dev_start[],
|
|
*const __x86_cpu_dev_end[];
|
|
|
|
extern void get_cpu_cap(struct cpuinfo_x86 *c);
|
|
extern void cpu_detect_cache_sizes(struct cpuinfo_x86 *c);
|
|
#endif /* ARCH_X86_CPU_H */
|