diff options
| author | Huacai Chen <chenhuacai@loongson.cn> | 2022-05-31 18:04:12 +0800 |
|---|---|---|
| committer | Huacai Chen <chenhuacai@loongson.cn> | 2022-06-03 20:09:29 +0800 |
| commit | 46859ac8af52ae599e1b51992ddef3eb43f295fc (patch) | |
| tree | c1e6640316d5d8748bea046b71d2260b81cbe314 /arch/loongarch/include/asm/stackframe.h | |
| parent | c6b99bed6b8f3255bd2f65a8e606352e0e638ad0 (diff) | |
LoongArch: Add multi-processor (SMP) support
LoongArch-based procesors have 4, 8 or 16 cores per package. This patch
adds multi-processor (SMP) support for LoongArch.
Reviewed-by: WANG Xuerui <git@xen0n.name>
Reviewed-by: Jiaxun Yang <jiaxun.yang@flygoat.com>
Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>
Diffstat (limited to 'arch/loongarch/include/asm/stackframe.h')
| -rw-r--r-- | arch/loongarch/include/asm/stackframe.h | 17 |
1 files changed, 12 insertions, 5 deletions
diff --git a/arch/loongarch/include/asm/stackframe.h b/arch/loongarch/include/asm/stackframe.h index 44151b878d00..4ca953062b5b 100644 --- a/arch/loongarch/include/asm/stackframe.h +++ b/arch/loongarch/include/asm/stackframe.h @@ -77,17 +77,24 @@ * new value in sp. */ .macro get_saved_sp docfi=0 - la.abs t1, kernelsp - move t0, sp + la.abs t1, kernelsp +#ifdef CONFIG_SMP + csrrd t0, PERCPU_BASE_KS + LONG_ADD t1, t1, t0 +#endif + move t0, sp .if \docfi .cfi_register sp, t0 .endif - LONG_L sp, t1, 0 + LONG_L sp, t1, 0 .endm .macro set_saved_sp stackp temp temp2 - la.abs \temp, kernelsp - LONG_S \stackp, \temp, 0 + la.abs \temp, kernelsp +#ifdef CONFIG_SMP + LONG_ADD \temp, \temp, u0 +#endif + LONG_S \stackp, \temp, 0 .endm .macro SAVE_SOME docfi=0 |