diff mbox series

[v2,2/5] arm64: signal: Remove unnecessary check when saving POE state

Message ID 20241023150511.3923558-3-kevin.brodsky@arm.com
State New
Headers show
Series Improve arm64 pkeys handling in signal delivery | expand

Commit Message

Kevin Brodsky Oct. 23, 2024, 3:05 p.m. UTC 
The POE frame record is allocated unconditionally if POE is
supported. If the allocation fails, a SIGSEGV is delivered before
setup_sigframe() can be reached. As a result there is no need to
consider poe_offset before saving POR_EL0; just remove that check.
This is in line with other frame records (FPMR, TPIDR2).

Reviewed-by: Mark Brown <broonie@kernel.org>
Reviewed-by: Dave Martin <Dave.Martin@arm.com>
Acked-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Kevin Brodsky <kevin.brodsky@arm.com>
---
 arch/arm64/kernel/signal.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
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Patch

diff --git a/arch/arm64/kernel/signal.c b/arch/arm64/kernel/signal.c
index dc998326e24d..f5fb48dabebe 100644
--- a/arch/arm64/kernel/signal.c
+++ b/arch/arm64/kernel/signal.c
@@ -1092,7 +1092,7 @@  static int setup_sigframe(struct rt_sigframe_user_layout *user,
 		err |= preserve_fpmr_context(fpmr_ctx);
 	}
 
-	if (system_supports_poe() && err == 0 && user->poe_offset) {
+	if (system_supports_poe() && err == 0) {
 		struct poe_context __user *poe_ctx =
 			apply_user_offset(user, user->poe_offset);