diff options
| author | Uros Bizjak <ubizjak@gmail.com> | 2023-10-17 18:27:32 +0200 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2023-10-20 12:19:51 +0200 |
| commit | 39d64ee59ceee0fb61243eab3c4b7b4492f80df2 (patch) | |
| tree | 6d231223bc0c871b3a0295821a7d296463caa1c9 /arch/x86/entry | |
| parent | x86/fpu: Clean up FPU switching in the middle of task switching (diff) | |
| download | linux-39d64ee59ceee0fb61243eab3c4b7b4492f80df2.tar.xz linux-39d64ee59ceee0fb61243eab3c4b7b4492f80df2.zip | |
x86/percpu: Correct PER_CPU_VAR() usage to include symbol and its addend
The PER_CPU_VAR() macro should be applied to a symbol and its addend.
Inconsistent usage is currently harmless, but needs to be corrected
before %rip-relative addressing is introduced to the PER_CPU_VAR() macro.
No functional changes intended.
Signed-off-by: Uros Bizjak <ubizjak@gmail.com>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Cc: linux-kernel@vger.kernel.org
Cc: Brian Gerst <brgerst@gmail.com>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Sean Christopherson <seanjc@google.com>
Diffstat (limited to 'arch/x86/entry')
| -rw-r--r-- | arch/x86/entry/calling.h | 2 | ||||
| -rw-r--r-- | arch/x86/entry/entry_32.S | 2 | ||||
| -rw-r--r-- | arch/x86/entry/entry_64.S | 2 |
3 files changed, 3 insertions, 3 deletions
diff --git a/arch/x86/entry/calling.h b/arch/x86/entry/calling.h index f6907627172b..47368ab0bda0 100644 --- a/arch/x86/entry/calling.h +++ b/arch/x86/entry/calling.h @@ -173,7 +173,7 @@ For 32-bit we have the following conventions - kernel is built with .endm #define THIS_CPU_user_pcid_flush_mask \ - PER_CPU_VAR(cpu_tlbstate) + TLB_STATE_user_pcid_flush_mask + PER_CPU_VAR(cpu_tlbstate + TLB_STATE_user_pcid_flush_mask) .macro SWITCH_TO_USER_CR3_NOSTACK scratch_reg:req scratch_reg2:req ALTERNATIVE "jmp .Lend_\@", "", X86_FEATURE_PTI diff --git a/arch/x86/entry/entry_32.S b/arch/x86/entry/entry_32.S index 6e6af42e044a..d4e094b2c877 100644 --- a/arch/x86/entry/entry_32.S +++ b/arch/x86/entry/entry_32.S @@ -305,7 +305,7 @@ .macro CHECK_AND_APPLY_ESPFIX #ifdef CONFIG_X86_ESPFIX32 #define GDT_ESPFIX_OFFSET (GDT_ENTRY_ESPFIX_SS * 8) -#define GDT_ESPFIX_SS PER_CPU_VAR(gdt_page) + GDT_ESPFIX_OFFSET +#define GDT_ESPFIX_SS PER_CPU_VAR(gdt_page + GDT_ESPFIX_OFFSET) ALTERNATIVE "jmp .Lend_\@", "", X86_BUG_ESPFIX diff --git a/arch/x86/entry/entry_64.S b/arch/x86/entry/entry_64.S index b940e928c808..6d236652fceb 100644 --- a/arch/x86/entry/entry_64.S +++ b/arch/x86/entry/entry_64.S @@ -252,7 +252,7 @@ SYM_FUNC_START(__switch_to_asm) #ifdef CONFIG_STACKPROTECTOR movq TASK_stack_canary(%rsi), %rbx - movq %rbx, PER_CPU_VAR(fixed_percpu_data) + FIXED_stack_canary + movq %rbx, PER_CPU_VAR(fixed_percpu_data + FIXED_stack_canary) #endif /* |