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alpha: replace hardcoded stack offsets with autogenerated ones

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commit 77b823fa619f97d16409ca37ad4f7936e28c5f83 upstream.

This allows the assembly in entry.S to automatically keep in sync with
changes in the stack layout (struct pt_regs and struct switch_stack).

Cc: stable@vger.kernel.org
Tested-by: Maciej W. Rozycki <macro@orcam.me.uk>
Tested-by: Matt Turner <mattst88@gmail.com>
Reviewed-by: Maciej W. Rozycki <macro@orcam.me.uk>
Signed-off-by: Ivan Kokshaysky <ink@unseen.parts>
Signed-off-by: Matt Turner <mattst88@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Ivan Kokshaysky 2025-02-04 23:35:22 +01:00 • committed by Greg Kroah-Hartman
commit 24d59c41e2
2 changed files with 2 additions and 4 deletions
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2
arch/alpha/kernel/asm-offsets.c
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@ -32,7 +32,9 @@ void foo(void)
DEFINE(CRED_EGID, offsetof(struct cred, egid));
BLANK();
DEFINE(SP_OFF, offsetof(struct pt_regs, ps));
DEFINE(SIZEOF_PT_REGS, sizeof(struct pt_regs));
DEFINE(SWITCH_STACK_SIZE, sizeof(struct switch_stack));
DEFINE(PT_PTRACED, PT_PTRACED);
DEFINE(CLONE_VM, CLONE_VM);
DEFINE(CLONE_UNTRACED, CLONE_UNTRACED);

4
arch/alpha/kernel/entry.S
View file

@ -15,10 +15,6 @@
.set noat
.cfi_sections .debug_frame
/* Stack offsets. */
#define SP_OFF 184
#define SWITCH_STACK_SIZE 320
.macro CFI_START_OSF_FRAME func
.align 4
.globl \func