[PATCH v2 3/4] x86/percpu, xen: Correct PER_CPU_VAR usage to include symbol and its addend

Uros Bizjak
2023-10-12T20:18:09Z

PER_CPU_VAR macro should be applied to a symbol and its addend.
Inconsisten usage is currently harmless, but needs to be corrected
before %rip-relative addressing is introduced to PER_CPU_VAR macro.

No functional changes intended.

Cc: Juergen Gross <jgross@suse.com>
Cc: Boris Ostrovsky <boris.ostrovsky@oracle.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Dave Hansen <dave.hansen@linux.intel.com>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Signed-off-by: Uros Bizjak <ubizjak@gmail.com>
---
arch/x86/xen/xen-asm.S | 10 +++++-----
1 file changed, 5 insertions(+), 5 deletions(-)

diff --git a/arch/x86/xen/xen-asm.S b/arch/x86/xen/xen-asm.S
index 9e5e68008785..448958ddbaf8 100644
--- a/arch/x86/xen/xen-asm.S
+++ b/arch/x86/xen/xen-asm.S
@@ -28,7 +28,7 @@
* non-zero.
*/
SYM_FUNC_START(xen_irq_disable_direct)
- movb $1, PER_CPU_VAR(xen_vcpu_info) + XEN_vcpu_info_mask
+ movb $1, PER_CPU_VAR(xen_vcpu_info + XEN_vcpu_info_mask)
RET
SYM_FUNC_END(xen_irq_disable_direct)

@@ -69,7 +69,7 @@ SYM_FUNC_END(check_events)
SYM_FUNC_START(xen_irq_enable_direct)
FRAME_BEGIN
/* Unmask events */
- movb $0, PER_CPU_VAR(xen_vcpu_info) + XEN_vcpu_info_mask
+ movb $0, PER_CPU_VAR(xen_vcpu_info + XEN_vcpu_info_mask)

/*
* Preempt here doesn't matter because that will deal with any
@@ -78,7 +78,7 @@ SYM_FUNC_START(xen_irq_enable_direct)
*/

/* Test for pending */
- testb $0xff, PER_CPU_VAR(xen_vcpu_info) + XEN_vcpu_info_pending
+ testb $0xff, PER_CPU_VAR(xen_vcpu_info + XEN_vcpu_info_pending)
jz 1f

call check_events
@@ -97,7 +97,7 @@ SYM_FUNC_END(xen_irq_enable_direct)
* x86 use opposite senses (mask vs enable).
*/
SYM_FUNC_START(xen_save_fl_direct)
- testb $0xff, PER_CPU_VAR(xen_vcpu_info) + XEN_vcpu_info_mask
+ testb $0xff, PER_CPU_VAR(xen_vcpu_info + XEN_vcpu_info_mask)
setz %ah
addb %ah, %ah
RET
@@ -113,7 +113,7 @@ SYM_FUNC_END(xen_read_cr2);

SYM_FUNC_START(xen_read_cr2_direct)
FRAME_BEGIN
- _ASM_MOV PER_CPU_VAR(xen_vcpu_info) + XEN_vcpu_info_arch_cr2, %_ASM_AX
+ _ASM_MOV PER_CPU_VAR(xen_vcpu_info + XEN_vcpu_info_arch_cr2), %_ASM_AX
FRAME_END
RET
SYM_FUNC_END(xen_read_cr2_direct);
--
2.41.0