From patchwork Thu Oct 17 13:39:06 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Kevin Brodsky X-Patchwork-Id: 836445 Received: from foss.arm.com (foss.arm.com [217.140.110.172]) by smtp.subspace.kernel.org (Postfix) with ESMTP id 6ED6B1D88AD for ; Thu, 17 Oct 2024 13:40:17 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=217.140.110.172 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1729172423; cv=none; b=Z5mRCnCIbh5aO5oth3gFDCeD7c6WDC+ExQgDbYVWLe9ifixfHRDYEdU4uRSN0GQDlojkF1foJZtKZ8wm1f2fTYbbuSU0zTpBPLlj16ValcYBUMWTfLwX0xjTEq3CTxRYdWSLlY6pRgeB8b26RYLgHt9Lh4W0VgbZV7w38x/aJm8= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1729172423; c=relaxed/simple; bh=mQbizh8ALoNLex+KUAn8R6nLC2KGxKrUIitA9TmTcJw=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=TAnw7WO55oiM54nieLrgDp4pa9SumwZSXZmD8JAJMx2rrJDJ+mP9TIIkEya29CJ/sqmKJnRLrNiQJy6oKKV0hpNsIx+RpEVMQJdEerqDl0KbWBXYpAiEbiKDPmHDOx1js7D3yP9Xsgw8Sq2J2uflSjblK/wextxMntPTMKf2ZPg= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=arm.com; spf=pass smtp.mailfrom=arm.com; arc=none smtp.client-ip=217.140.110.172 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=arm.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=arm.com Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.121.207.14]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id 8DB0A150C; Thu, 17 Oct 2024 06:40:46 -0700 (PDT) Received: from e123572-lin.arm.com (e123572-lin.cambridge.arm.com [10.1.194.54]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPSA id 702923F71E; Thu, 17 Oct 2024 06:40:14 -0700 (PDT) From: Kevin Brodsky To: linux-arm-kernel@lists.infradead.org Cc: Kevin Brodsky , akpm@linux-foundation.org, anshuman.khandual@arm.com, aruna.ramakrishna@oracle.com, broonie@kernel.org, catalin.marinas@arm.com, dave.hansen@linux.intel.com, dave.martin@arm.com, jeffxu@chromium.org, joey.gouly@arm.com, shuah@kernel.org, will@kernel.org, linux-kselftest@vger.kernel.org, x86@kernel.org Subject: [PATCH 2/5] arm64: signal: Remove unnecessary check when saving POE state Date: Thu, 17 Oct 2024 14:39:06 +0100 Message-ID: <20241017133909.3837547-3-kevin.brodsky@arm.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20241017133909.3837547-1-kevin.brodsky@arm.com> References: <20241017133909.3837547-1-kevin.brodsky@arm.com> Precedence: bulk X-Mailing-List: linux-kselftest@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 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 check that poe_offset has been checked before saving POR_EL0; this is in line with other frame records (FPMR, TPIDR2). Signed-off-by: Kevin Brodsky Acked-by: Catalin Marinas --- arch/arm64/kernel/signal.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) 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);