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| author | Brian Gerst <brgerst@gmail.com> | 2023-03-16 22:21:05 +0000 |
|---|---|---|
| committer | Thomas Gleixner <tglx@linutronix.de> | 2023-03-21 13:35:53 +0100 |
| commit | 8f6be6d870e8a078fcc956fc2ff8d7cff67795ee (patch) | |
| tree | da909e2da004596011c3d04b03343e889fca6479 /arch/x86/kernel/smpboot.c | |
| parent | c253b64020c7a7c7a1f6adf8922456614be0f665 (diff) | |
| download | linux-stable-8f6be6d870e8a078fcc956fc2ff8d7cff67795ee.tar.gz linux-stable-8f6be6d870e8a078fcc956fc2ff8d7cff67795ee.tar.bz2 linux-stable-8f6be6d870e8a078fcc956fc2ff8d7cff67795ee.zip | |
x86/smpboot: Remove initial_gs
Given its CPU#, each CPU can find its own per-cpu offset, and directly set
GSBASE accordingly. The global variable can be eliminated.
Signed-off-by: Brian Gerst <brgerst@gmail.com>
Signed-off-by: David Woodhouse <dwmw@amazon.co.uk>
Signed-off-by: Usama Arif <usama.arif@bytedance.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Tested-by: Usama Arif <usama.arif@bytedance.com>
Tested-by: Guilherme G. Piccoli <gpiccoli@igalia.com>
Reviewed-by: David Woodhouse <dwmw@amazon.co.uk>
Link: https://lore.kernel.org/r/20230316222109.1940300-9-usama.arif@bytedance.com
Diffstat (limited to 'arch/x86/kernel/smpboot.c')
| -rw-r--r-- | arch/x86/kernel/smpboot.c | 2 |
1 files changed, 0 insertions, 2 deletions
diff --git a/arch/x86/kernel/smpboot.c b/arch/x86/kernel/smpboot.c index 94e6c54ddb70..b7d478de79e5 100644 --- a/arch/x86/kernel/smpboot.c +++ b/arch/x86/kernel/smpboot.c @@ -1059,8 +1059,6 @@ int common_cpu_up(unsigned int cpu, struct task_struct *idle) #ifdef CONFIG_X86_32 /* Stack for startup_32 can be just as for start_secondary onwards */ per_cpu(pcpu_hot.top_of_stack, cpu) = task_top_of_stack(idle); -#else - initial_gs = per_cpu_offset(cpu); #endif return 0; } |