Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 514483A961B; Mon, 23 Mar 2026 14:44:47 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1774277087; cv=none; b=FABxArm4RE0cMXLv3DUKadB1nMs+fN+Pjs+8luw/B1H4TFJUwP90OTTRnjqs92FVAzDooLETZsfMNJIW6b6jLPeJziMVyqqyckCSfSaFd3+dlBTKSAJmd6hFuQKdZ6rAhtuKGL15PzO3p/QcukoaPsbphIu/osEUNGHEXCFEveA= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1774277087; c=relaxed/simple; bh=sNdAsPI5fgzRAhFVVkaa6COHWvWfJrN981OzNukrIIk=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=cozkAA1flinJAIp4E/WNOkBbbKoLasd8R5IKkmm83xe5S7KAX9ZhX9LGTgX/8U+n+gwy8StUA9/qOn9uqnkkWGWLCYvcjNyrVsOh4TMrJXunQT+LmvOj5PTArp3DAq+EpzVj7NIrEp+Am6X/+Iuc0owTNg954n4jgBvM2CZ1i6o= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=re+JQBwf; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b="re+JQBwf" Received: by smtp.kernel.org (Postfix) with ESMTPSA id DA217C4CEF7; Mon, 23 Mar 2026 14:44:46 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1774277087; bh=sNdAsPI5fgzRAhFVVkaa6COHWvWfJrN981OzNukrIIk=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=re+JQBwf0eskYmB721MmWxQsOOnb09l/DzhQNGYYJnEZQqBdrHMDhw7Jqrze1D/Gu j3vXua1erNAA8dHKDGYNUCIQY4RxJ+FfLI6nAVGsgh6lD36a36qyfcIYkMzZ4C0Qsi y4qxWkL0lLbURccfqc2X7fIMz/oo929xDIbMGCU4= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Felix Lechner , Helge Deller Subject: [PATCH 6.12 315/460] parisc: Flush correct cache in cacheflush() syscall Date: Mon, 23 Mar 2026 14:45:11 +0100 Message-ID: <20260323134534.241303317@linuxfoundation.org> X-Mailer: git-send-email 2.53.0 In-Reply-To: <20260323134526.647552166@linuxfoundation.org> References: <20260323134526.647552166@linuxfoundation.org> User-Agent: quilt/0.69 X-stable: review X-Patchwork-Hint: ignore Precedence: bulk X-Mailing-List: patches@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 6.12-stable review patch. If anyone has any objections, please let me know. ------------------ From: Helge Deller commit 2c98a8fbd6aa647414c6248dacf254ebe91c79ad upstream. The assembly flush instructions were swapped for I- and D-cache flags: SYSCALL_DEFINE3(cacheflush, ...) { if (cache & DCACHE) { "fic ...\n" } if (cache & ICACHE && error == 0) { "fdc ...\n" } Fix it by using fdc for DCACHE, and fic for ICACHE flushing. Reported-by: Felix Lechner Fixes: c6d96328fecd ("parisc: Add cacheflush() syscall") Cc: # v6.5+ Signed-off-by: Helge Deller Signed-off-by: Greg Kroah-Hartman --- arch/parisc/kernel/cache.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) --- a/arch/parisc/kernel/cache.c +++ b/arch/parisc/kernel/cache.c @@ -953,7 +953,7 @@ SYSCALL_DEFINE3(cacheflush, unsigned lon #else "1: cmpb,<<,n %0,%2,1b\n" #endif - " fic,m %3(%4,%0)\n" + " fdc,m %3(%4,%0)\n" "2: sync\n" ASM_EXCEPTIONTABLE_ENTRY_EFAULT(1b, 2b, "%1") : "+r" (start), "+r" (error) @@ -968,7 +968,7 @@ SYSCALL_DEFINE3(cacheflush, unsigned lon #else "1: cmpb,<<,n %0,%2,1b\n" #endif - " fdc,m %3(%4,%0)\n" + " fic,m %3(%4,%0)\n" "2: sync\n" ASM_EXCEPTIONTABLE_ENTRY_EFAULT(1b, 2b, "%1") : "+r" (start), "+r" (error)