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45fa71f19a
In MTRR code use_intel() is only used in one source file, and the relevant use_intel_if member of struct mtrr_ops is set only in generic_mtrr_ops. Replace use_intel() with a single flag in cacheinfo.c which can be set when assigning generic_mtrr_ops to mtrr_if. This allows to drop use_intel_if from mtrr_ops, while preparing to decouple PAT from MTRR. As another preparation for the PAT/MTRR decoupling use a bit for MTRR control and one for PAT control. For now set both bits together, this can be changed later. As the new flag will be set only if mtrr_enabled is set, the test for mtrr_enabled can be dropped at some places. [ bp: Massage commit message. ] Signed-off-by: Juergen Gross <jgross@suse.com> Signed-off-by: Borislav Petkov <bp@suse.de> Link: https://lore.kernel.org/r/20221102074713.21493-4-jgross@suse.com Signed-off-by: Borislav Petkov <bp@suse.de>
14 lines
400 B
C
14 lines
400 B
C
/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef _ASM_X86_CACHEINFO_H
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#define _ASM_X86_CACHEINFO_H
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/* Kernel controls MTRR and/or PAT MSRs. */
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extern unsigned int memory_caching_control;
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#define CACHE_MTRR 0x01
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#define CACHE_PAT 0x02
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void cacheinfo_amd_init_llc_id(struct cpuinfo_x86 *c, int cpu);
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void cacheinfo_hygon_init_llc_id(struct cpuinfo_x86 *c, int cpu);
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#endif /* _ASM_X86_CACHEINFO_H */
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