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| author | Juergen Gross <jgross@suse.com> | 2022-11-02 08:47:11 +0100 |
|---|---|---|
| committer | Borislav Petkov <bp@suse.de> | 2022-11-10 13:12:45 +0100 |
| commit | 30f89e524becdbaa483b34902b079c9d4dfaa4a3 (patch) | |
| tree | 298cfde91b69aa719bf292b211d4a7fe6718f970 /arch/x86/kernel/cpu/common.c | |
| parent | adfe7512e1d0b2e83215b0ec56337d2df9f1032d (diff) | |
| download | linux-30f89e524becdbaa483b34902b079c9d4dfaa4a3.tar.gz linux-30f89e524becdbaa483b34902b079c9d4dfaa4a3.tar.bz2 linux-30f89e524becdbaa483b34902b079c9d4dfaa4a3.zip | |
x86/cacheinfo: Switch cache_ap_init() to hotplug callback
Instead of explicitly calling cache_ap_init() in
identify_secondary_cpu() use a CPU hotplug callback instead. By
registering the callback only after having started the non-boot CPUs
and initializing cache_aps_delayed_init with "true", calling
set_cache_aps_delayed_init() at boot time can be dropped.
It should be noted that this change results in cache_ap_init() being
called a little bit later when hotplugging CPUs. By using a new
hotplug slot right at the start of the low level bringup this is not
problematic, as no operations requiring a specific caching mode are
performed that early in CPU initialization.
Suggested-by: Borislav Petkov <bp@alien8.de>
Signed-off-by: Juergen Gross <jgross@suse.com>
Signed-off-by: Borislav Petkov <bp@suse.de>
Link: https://lore.kernel.org/r/20221102074713.21493-15-jgross@suse.com
Signed-off-by: Borislav Petkov <bp@suse.de>
Diffstat (limited to 'arch/x86/kernel/cpu/common.c')
| -rw-r--r-- | arch/x86/kernel/cpu/common.c | 1 |
1 files changed, 0 insertions, 1 deletions
diff --git a/arch/x86/kernel/cpu/common.c b/arch/x86/kernel/cpu/common.c index fd058b547f8d..bf4ac1cb93d7 100644 --- a/arch/x86/kernel/cpu/common.c +++ b/arch/x86/kernel/cpu/common.c @@ -1949,7 +1949,6 @@ void identify_secondary_cpu(struct cpuinfo_x86 *c) #ifdef CONFIG_X86_32 enable_sep_cpu(); #endif - cache_ap_init(); validate_apic_and_package_id(c); x86_spec_ctrl_setup_ap(); update_srbds_msr(); |