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| author | Thomas Gleixner <tglx@linutronix.de> | 2023-05-13 00:07:03 +0300 |
|---|---|---|
| committer | Peter Zijlstra <peterz@infradead.org> | 2023-05-15 14:44:48 +0300 |
| commit | 666e1156b2c514f045827f50263ed2eb9d78671b (patch) | |
| tree | 55490f335a221f271ce04f186d9ceac3739dd966 /arch/x86/kernel/head_64.S | |
| parent | 134a12827bc59484c4d4a3ceabf178c831febbb8 (diff) | |
| download | linux-666e1156b2c514f045827f50263ed2eb9d78671b.tar.xz | |
x86/smpboot: Rename start_cpu0() to soft_restart_cpu()
This is used in the SEV play_dead() implementation to re-online CPUs. But
that has nothing to do with CPU0.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Tested-by: Michael Kelley <mikelley@microsoft.com>
Tested-by: Oleksandr Natalenko <oleksandr@natalenko.name>
Tested-by: Helge Deller <deller@gmx.de> # parisc
Tested-by: Guilherme G. Piccoli <gpiccoli@igalia.com> # Steam Deck
Link: https://lore.kernel.org/r/20230512205255.662319599@linutronix.de
Diffstat (limited to 'arch/x86/kernel/head_64.S')
| -rw-r--r-- | arch/x86/kernel/head_64.S | 10 |
1 files changed, 5 insertions, 5 deletions
diff --git a/arch/x86/kernel/head_64.S b/arch/x86/kernel/head_64.S index a5df3e994f04..fc86bc1b6ba4 100644 --- a/arch/x86/kernel/head_64.S +++ b/arch/x86/kernel/head_64.S @@ -377,11 +377,11 @@ SYM_CODE_END(secondary_startup_64) #ifdef CONFIG_HOTPLUG_CPU /* - * Boot CPU0 entry point. It's called from play_dead(). Everything has been set - * up already except stack. We just set up stack here. Then call - * start_secondary() via .Ljump_to_C_code. + * Entry point for soft restart of a CPU. Invoked from xxx_play_dead() for + * restarting the boot CPU or for restarting SEV guest CPUs after CPU hot + * unplug. Everything is set up already except the stack. */ -SYM_CODE_START(start_cpu0) +SYM_CODE_START(soft_restart_cpu) ANNOTATE_NOENDBR UNWIND_HINT_END_OF_STACK @@ -390,7 +390,7 @@ SYM_CODE_START(start_cpu0) movq TASK_threadsp(%rcx), %rsp jmp .Ljump_to_C_code -SYM_CODE_END(start_cpu0) +SYM_CODE_END(soft_restart_cpu) #endif #ifdef CONFIG_AMD_MEM_ENCRYPT |