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| 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/cpu/x86/mp_init.c | |
| parent | 407e00dca06e36d2d9b11f998a278109ff330783 (diff) | |
| download | coreboot-d4dfc21f70616bc97191969aa2b6d0196a525fce.tar.gz coreboot-d4dfc21f70616bc97191969aa2b6d0196a525fce.tar.bz2 coreboot-d4dfc21f70616bc97191969aa2b6d0196a525fce.zip | |
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/cpu/x86/mp_init.c')
| -rw-r--r-- | src/cpu/x86/mp_init.c | 10 |
1 files changed, 5 insertions, 5 deletions
diff --git a/src/cpu/x86/mp_init.c b/src/cpu/x86/mp_init.c index 0e4a571e96c2..758550c43d3f 100644 --- a/src/cpu/x86/mp_init.c +++ b/src/cpu/x86/mp_init.c @@ -176,20 +176,19 @@ static struct bus *g_cpu_bus; /* By the time APs call ap_init() caching has been setup, and microcode has * been loaded. */ -static void asmlinkage ap_init(void) +static asmlinkage void ap_init(unsigned int index) { - struct cpu_info *info = cpu_info(); - /* Ensure the local APIC is enabled */ enable_lapic(); setup_lapic_interrupts(); struct device *dev = g_cpu_bus->children; - for (unsigned int i = info->index; i > 0; i--) + for (unsigned int i = index; i > 0; i--) dev = dev->sibling; - info->cpu = dev; + set_cpu_info(index, dev); + struct cpu_info *info = cpu_info(); cpu_add_map_entry(info->index); /* Fix up APIC id with reality. */ @@ -540,6 +539,7 @@ static enum cb_err init_bsp(struct bus *cpu_bus) } /* Find the device structure for the boot CPU. */ + set_cpu_info(0, bsp); info = cpu_info(); info->cpu = bsp; info->cpu->name = processor_name; |