x86/mtrr: Add a stop_machine() handler calling only cache_cpu_init()

Instead of having a stop_machine() handler for either a specific MTRR register or all state at once, add a handler just for calling cache_cpu_init() if appropriate. Add functions for calling stop_machine() with this handler as well. Add a generic replacement for mtrr_bp_restore() and a wrapper for mtrr_bp_init(). Signed-off-by: Juergen Gross <jgross@suse.com> Signed-off-by: Borislav Petkov <bp@suse.de> Link: https://lore.kernel.org/r/20221102074713.21493-13-jgross@suse.com Signed-off-by: Borislav Petkov <bp@suse.de>
2026-11-10 20:48:12 +00:00 · 2022-11-02 08:47:09 +01:00 · 2022-11-02 08:47:09 +01:00 · 0b9a6a8bed
commit 0b9a6a8bed
parent 955d0e0805
8 changed files with 74 additions and 99 deletions
--- a/arch/x86/include/asm/cacheinfo.h
+++ b/arch/x86/include/asm/cacheinfo.h
--- a/arch/x86/include/asm/mtrr.h
+++ b/arch/x86/include/asm/mtrr.h
--- a/arch/x86/kernel/cpu/cacheinfo.c
+++ b/arch/x86/kernel/cpu/cacheinfo.c
--- a/arch/x86/kernel/cpu/common.c
+++ b/arch/x86/kernel/cpu/common.c
--- a/arch/x86/kernel/cpu/mtrr/mtrr.c
+++ b/arch/x86/kernel/cpu/mtrr/mtrr.c
--- a/arch/x86/kernel/setup.c
+++ b/arch/x86/kernel/setup.c
--- a/arch/x86/kernel/smpboot.c
+++ b/arch/x86/kernel/smpboot.c
--- a/arch/x86/power/cpu.c
+++ b/arch/x86/power/cpu.c