diff options
| author | Arthur Heymans <arthur@aheymans.xyz> | 2022-11-10 13:34:49 +0100 |
|---|---|---|
| committer | Arthur Heymans <arthur@aheymans.xyz> | 2022-11-12 14:23:51 +0000 |
| commit | d4dfc21f70616bc97191969aa2b6d0196a525fce (patch) | |
| tree | 7c4944b9f923710316df04bfa06f97005c9ca03b /src/arch/x86/include | |
| parent | 407e00dca06e36d2d9b11f998a278109ff330783 (diff) | |
cpu/x86: Set thread local storage in C code
Doing this in C code is way easier to understand. Also the thread local
storage is now in .bss instead of the AP stack. This makes it more
robust against stack overflows, as APs stacks overflow in each other.
TESTED: work on qemu.
Change-Id: I19d3285daf97798a2d28408b5601ad991e29e718
Signed-off-by: Arthur Heymans <arthur@aheymans.xyz>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/69435
Reviewed-by: Raul Rangel <rrangel@chromium.org>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Diffstat (limited to 'src/arch/x86/include')
| -rw-r--r-- | src/arch/x86/include/arch/cpu.h | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/src/arch/x86/include/arch/cpu.h b/src/arch/x86/include/arch/cpu.h index 0087a795ec..c7c6b4e074 100644 --- a/src/arch/x86/include/arch/cpu.h +++ b/src/arch/x86/include/arch/cpu.h @@ -147,11 +147,13 @@ struct per_cpu_segment_data { struct cpu_info *cpu_info; }; +enum cb_err set_cpu_info(unsigned int index, struct device *cpu); + static inline struct cpu_info *cpu_info(void) { struct cpu_info *ci = NULL; - __asm__("mov %%gs:%c[offset], %[ci]" + __asm__ __volatile__("mov %%gs:%c[offset], %[ci]" : [ci] "=r" (ci) : [offset] "i" (offsetof(struct per_cpu_segment_data, cpu_info)) ); |