From: Ivan Kokshaysky Date: Tue, 4 Feb 2025 22:35:22 +0000 (+0100) Subject: alpha: replace hardcoded stack offsets with autogenerated ones X-Git-Tag: v5.10.235~169 X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=29ecfd43c7cb6306068f04a68a302138dab09caf;p=thirdparty%2Fkernel%2Fstable.git alpha: replace hardcoded stack offsets with autogenerated ones 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 Tested-by: Matt Turner Reviewed-by: Maciej W. Rozycki Signed-off-by: Ivan Kokshaysky Signed-off-by: Matt Turner Signed-off-by: Greg Kroah-Hartman --- diff --git a/arch/alpha/kernel/asm-offsets.c b/arch/alpha/kernel/asm-offsets.c index 2e125e5c1508c..05d9296af5ea6 100644 --- a/arch/alpha/kernel/asm-offsets.c +++ b/arch/alpha/kernel/asm-offsets.c @@ -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); diff --git a/arch/alpha/kernel/entry.S b/arch/alpha/kernel/entry.S index 351d6e60e5669..ba99cc9d27c7c 100644 --- a/arch/alpha/kernel/entry.S +++ b/arch/alpha/kernel/entry.S @@ -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