From mboxrd@z Thu Jan 1 00:00:00 1970 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 BB56A3AEF5F; Mon, 23 Mar 2026 14:01:38 +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=1774274498; cv=none; b=HCKA2i+lr84PDGWXoKiGgrXpPBdL9kXUx4ORtmlsaCiu0BMr1Vz+wS/7SU+wrnNDucnEGMS7KwWG4O8bXkJ28Vu7Z++76TFzNGJEtvO2B5xQ23QIiLbWucT+jI5m/wegOk2m+HzHGjtNSACsQcwQNew/8nSM/0cXsnk5odgbEcc= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1774274498; c=relaxed/simple; bh=SkhGYT3ySAZmrkOyu5OfGMZQxVNJoxI+BXJyUGqlxrI=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=mjI/YiBmc3hFFTV0DjC/Mr2b/aMT0EfreZs5O3Kv/6jddXTVPKVOh/cSruoSkY5dE0uwVaMFfpUV7W2R6KN/CN+8U8M+mf/XFOPvezdv/Z/ENB/ooHlPCrNhs75Q87eLLr6oGQVYTcqOveKv0FmS7rYoQq8Xt1FgHj8YXDF4NSk= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=e7EQysqm; 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="e7EQysqm" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 3E127C4CEF7; Mon, 23 Mar 2026 14:01:38 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1774274498; bh=SkhGYT3ySAZmrkOyu5OfGMZQxVNJoxI+BXJyUGqlxrI=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=e7EQysqmETvZx1IOz6Zz3ajvvj3xbGJMEP4k+G1JoO37Zo/7Klaz36gak1aBMq07h FLbPMfaOkARM41HRvrAzs2AITCcEDy+GaloCj3A/36wREs8luNPMRLakXDFpLjeg6R DJqqMDyhWHrma3A1zV3a0+aUF0/UwSaAY5nvx7qQ= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Felix Lechner , Helge Deller Subject: [PATCH 6.18 017/212] parisc: Flush correct cache in cacheflush() syscall Date: Mon, 23 Mar 2026 14:43:58 +0100 Message-ID: <20260323134504.305162284@linuxfoundation.org> X-Mailer: git-send-email 2.53.0 In-Reply-To: <20260323134503.770111826@linuxfoundation.org> References: <20260323134503.770111826@linuxfoundation.org> User-Agent: quilt/0.69 X-stable: review X-Patchwork-Hint: ignore Precedence: bulk X-Mailing-List: stable@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 6.18-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)