Commit 466ece4c authored by Kevin Brodsky's avatar Kevin Brodsky Committed by Catalin Marinas
Browse files

arm64: signal: Remove unnecessary check when saving POE state 



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: default avatarMark Brown <broonie@kernel.org>
Reviewed-by: default avatarDave Martin <Dave.Martin@arm.com>
Acked-by: default avatarCatalin Marinas <catalin.marinas@arm.com>
Signed-off-by: default avatarKevin Brodsky <kevin.brodsky@arm.com>
Link: https://lore.kernel.org/r/20241029144539.111155-3-kevin.brodsky@arm.com


Signed-off-by: default avatarCatalin Marinas <catalin.marinas@arm.com>
parent 2e8a1ace

arch/arm64/kernel/signal.c

+1 −1
Original line number Diff line number Diff line
@@ -1154,7 +1154,7 @@ 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);