Message ID | 20201103095859.538827102@linutronix.de |
---|---|
State | New |
Headers | show
Return-Path: <linux-snps-arc-bounces+incoming=patchwork.ozlabs.org@lists.infradead.org> X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=none (no SPF record) smtp.mailfrom=lists.infradead.org (client-ip=2001:8b0:10b:1231::1; helo=merlin.infradead.org; envelope-from=linux-snps-arc-bounces+incoming=patchwork.ozlabs.org@lists.infradead.org; receiver=<UNKNOWN>) Authentication-Results: ozlabs.org; dmarc=fail (p=none dis=none) header.from=linutronix.de Authentication-Results: ozlabs.org; dkim=pass (2048-bit key; secure) header.d=lists.infradead.org header.i=@lists.infradead.org header.a=rsa-sha256 header.s=merlin.20170209 header.b=Y0Hdrf7D; dkim=fail reason="signature verification failed" (2048-bit key; secure) header.d=linutronix.de header.i=@linutronix.de header.a=rsa-sha256 header.s=2020 header.b=UCiLeToK; dkim=fail reason="signature verification failed" header.d=linutronix.de header.i=@linutronix.de header.a=ed25519-sha256 header.s=2020e header.b=iNcZKx8F; dkim-atps=neutral Received: from merlin.infradead.org (merlin.infradead.org [IPv6:2001:8b0:10b:1231::1]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (No client certificate requested) by ozlabs.org (Postfix) with ESMTPS id 4CQR4y11Qpz9sVS for <incoming@patchwork.ozlabs.org>; Tue, 3 Nov 2020 21:35:29 +1100 (AEDT) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=merlin.20170209; h=Sender:Content-Transfer-Encoding: Content-Type:Cc:List-Subscribe:List-Help:List-Post:List-Archive: List-Unsubscribe:List-Id:MIME-Version:References:Subject:To:From:Date: Message-Id:Reply-To:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:In-Reply-To:List-Owner; bh=iTz+Gpuusuu/kyW1fNFJBvkcBTtznawQsCLxu6pm8L0=; b=Y0Hdrf7DTSHvTS2dmFb3UrcWW t2MKXpNdBAH3jFfJpNlNgWvRq4xRLoJ15zywAKjosJw6kQkpUTgU5aTJNgHttPZyYLPy9PMoiqm7l AOsW8+u+Da8n2y9W0C5GKCM+N2PccjSFhnD6gikNPS0gJ+8MbmSOjVqhI01/4oMMN8cP4pGIk+cAw OlEHDltoAbpIU2N3++MyGOu6suv/+cU7HWUCbFIgfSla8toOSGIiYqt9+PlnFmR+eusqUvz0z9uKh 04vmQcd0QHrmyv92O3kr97fagGh7zx9eEMS7xetfcv9KPzn1FROURluCsfUWrBsdU9NQS/uLVlRy0 hfiXYpfdg==; Received: from localhost ([::1] helo=merlin.infradead.org) by merlin.infradead.org with esmtp (Exim 4.92.3 #3 (Red Hat Linux)) id 1kZtet-0003tL-Ke; Tue, 03 Nov 2020 10:35:23 +0000 Received: from galois.linutronix.de ([193.142.43.55]) by merlin.infradead.org with esmtps (Exim 4.92.3 #3 (Red Hat Linux)) id 1kZtde-0003Hr-6q; Tue, 03 Nov 2020 10:34:18 +0000 Message-Id: <20201103095859.538827102@linutronix.de> DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linutronix.de; s=2020; t=1604399639; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: references:references; bh=37l2/9hMoX995irJwwZT0VNkjmk/OwZo72GhT72QTX4=; b=UCiLeToK4AIC+9Dmx7LG5rV2mjuvYVd6Coif2Sdjhi7Si2K86UL165usKvCu+1M57a5ZTs 3lGdAzYJonKcTuvyMgrOXNx+UrIY8LVcTVNso2JLtpbkE1oygEe/wl748JnAW6AS6EsTrD c2VWZi0Trd4Jp1S58g19SzXtzA+u8eA2qRCth6y4qBL25KfIk14Y8/pIC7Pk9xx9opLe+Y fYTupCtZR4FQC2/b1qBabqi8Jfeh2ZKqUrq+V0zmNc17uiUhxxjlvxwBR152OCIcLA02mF vb+4tkvTlRO1TXdeUxGxjDkLW4Yer0R+EYHQyA+pAWiyVIPp/wbrw75o+T0ZJw== DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; d=linutronix.de; s=2020e; t=1604399639; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: references:references; bh=37l2/9hMoX995irJwwZT0VNkjmk/OwZo72GhT72QTX4=; b=iNcZKx8Fg9QYlTcIp7Z3u6IBgHA5T+EwXNMLuSSTvrJb/3r4DH72OAUwbFyp58bawCPYfQ dJ5wikkjaG3JOhAw== Date: Tue, 03 Nov 2020 10:27:41 +0100 From: Thomas Gleixner <tglx@linutronix.de> To: LKML <linux-kernel@vger.kernel.org> Subject: [patch V3 29/37] ARM: mm: Replace kmap_atomic_pfn() References: <20201103092712.714480842@linutronix.de> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20201103_053406_762967_0073794D X-CRM114-Status: GOOD ( 16.10 ) X-Spam-Score: -2.5 (--) X-Spam-Report: SpamAssassin version 3.4.4 on merlin.infradead.org summary: Content analysis details: (-2.5 points) pts rule name description ---- ---------------------- -------------------------------------------------- -2.3 RCVD_IN_DNSWL_MED RBL: Sender listed at https://www.dnswl.org/, medium trust [193.142.43.55 listed in list.dnswl.org] 0.0 SPF_HELO_NONE SPF: HELO does not publish an SPF Record -0.0 SPF_PASS SPF: sender matches SPF record 0.1 DKIM_SIGNED Message has a DKIM or DK signature, not necessarily valid -0.1 DKIM_VALID_EF Message has a valid DKIM or DK signature from envelope-from domain -0.1 DKIM_VALID Message has at least one valid DKIM or DK signature -0.1 DKIM_VALID_AU Message has a valid DKIM or DK signature from author's domain X-BeenThere: linux-snps-arc@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Linux on Synopsys ARC Processors <linux-snps-arc.lists.infradead.org> List-Unsubscribe: <http://lists.infradead.org/mailman/options/linux-snps-arc>, <mailto:linux-snps-arc-request@lists.infradead.org?subject=unsubscribe> List-Archive: <http://lists.infradead.org/pipermail/linux-snps-arc/> List-Post: <mailto:linux-snps-arc@lists.infradead.org> List-Help: <mailto:linux-snps-arc-request@lists.infradead.org?subject=help> List-Subscribe: <http://lists.infradead.org/mailman/listinfo/linux-snps-arc>, <mailto:linux-snps-arc-request@lists.infradead.org?subject=subscribe> Cc: Juri Lelli <juri.lelli@redhat.com>, linux-aio@kvack.org, Peter Zijlstra <peterz@infradead.org>, Benjamin Herrenschmidt <benh@kernel.crashing.org>, Sebastian Andrzej Siewior <bigeasy@linutronix.de>, Joonas Lahtinen <joonas.lahtinen@linux.intel.com>, dri-devel@lists.freedesktop.org, virtualization@lists.linux-foundation.org, Ben Segall <bsegall@google.com>, Chris Mason <clm@fb.com>, Huang Rui <ray.huang@amd.com>, Paul Mackerras <paulus@samba.org>, Gerd Hoffmann <kraxel@redhat.com>, Daniel Bristot de Oliveira <bristot@redhat.com>, sparclinux@vger.kernel.org, Vincent Chen <deanbo422@gmail.com>, Christoph Hellwig <hch@lst.de>, Vincent Guittot <vincent.guittot@linaro.org>, Paul McKenney <paulmck@kernel.org>, Max Filippov <jcmvbkbc@gmail.com>, Michael Ellerman <mpe@ellerman.id.au>, x86@kernel.org, Russell King <linux@armlinux.org.uk>, linux-csky@vger.kernel.org, Ingo Molnar <mingo@kernel.org>, David Airlie <airlied@linux.ie>, VMware Graphics <linux-graphics-maintainer@vmware.com>, Mel Gorman <mgorman@suse.de>, nouveau@lists.freedesktop.org, Dave Airlie <airlied@redhat.com>, linux-snps-arc@lists.infradead.org, Ben Skeggs <bskeggs@redhat.com>, linux-xtensa@linux-xtensa.org, Arnd Bergmann <arnd@arndb.de>, intel-gfx@lists.freedesktop.org, Roland Scheidegger <sroland@vmware.com>, Josef Bacik <josef@toxicpanda.com>, Steven Rostedt <rostedt@goodmis.org>, Linus Torvalds <torvalds@linuxfoundation.org>, Alexander Viro <viro@zeniv.linux.org.uk>, spice-devel@lists.freedesktop.org, David Sterba <dsterba@suse.com>, Rodrigo Vivi <rodrigo.vivi@intel.com>, Dietmar Eggemann <dietmar.eggemann@arm.com>, linux-arm-kernel@lists.infradead.org, Jani Nikula <jani.nikula@linux.intel.com>, Chris Zankel <chris@zankel.net>, Michal Simek <monstr@monstr.eu>, Thomas Bogendoerfer <tsbogend@alpha.franken.de>, Nick Hu <nickhu@andestech.com>, linux-mm@kvack.org, Vineet Gupta <vgupta@synopsys.com>, linux-mips@vger.kernel.org, Christian Koenig <christian.koenig@amd.com>, Benjamin LaHaise <bcrl@kvack.org>, Daniel Vetter <daniel@ffwll.ch>, linux-fsdevel@vger.kernel.org, Andrew Morton <akpm@linux-foundation.org>, linuxppc-dev@lists.ozlabs.org, "David S. Miller" <davem@davemloft.net>, linux-btrfs@vger.kernel.org, Greentime Hu <green.hu@gmail.com> Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-snps-arc" <linux-snps-arc-bounces@lists.infradead.org> Errors-To: linux-snps-arc-bounces+incoming=patchwork.ozlabs.org@lists.infradead.org |
Series |
mm/highmem: Preemptible variant of kmap_atomic & friends
|
expand
|
--- a/arch/arm/mm/cache-feroceon-l2.c +++ b/arch/arm/mm/cache-feroceon-l2.c @@ -49,9 +49,9 @@ static inline unsigned long l2_get_va(un * we simply install a virtual mapping for it only for the * TLB lookup to occur, hence no need to flush the untouched * memory mapping afterwards (note: a cache flush may happen - * in some circumstances depending on the path taken in kunmap_atomic). + * in some circumstances depending on the path taken in kunmap_local). */ - void *vaddr = kmap_atomic_pfn(paddr >> PAGE_SHIFT); + void *vaddr = kmap_local_pfn(paddr >> PAGE_SHIFT); return (unsigned long)vaddr + (paddr & ~PAGE_MASK); #else return __phys_to_virt(paddr); @@ -61,7 +61,7 @@ static inline unsigned long l2_get_va(un static inline void l2_put_va(unsigned long vaddr) { #ifdef CONFIG_HIGHMEM - kunmap_atomic((void *)vaddr); + kunmap_local((void *)vaddr); #endif } --- a/arch/arm/mm/cache-xsc3l2.c +++ b/arch/arm/mm/cache-xsc3l2.c @@ -59,7 +59,7 @@ static inline void l2_unmap_va(unsigned { #ifdef CONFIG_HIGHMEM if (va != -1) - kunmap_atomic((void *)va); + kunmap_local((void *)va); #endif } @@ -75,7 +75,7 @@ static inline unsigned long l2_map_va(un * in place for it. */ l2_unmap_va(prev_va); - va = (unsigned long)kmap_atomic_pfn(pa >> PAGE_SHIFT); + va = (unsigned long)kmap_local_pfn(pa >> PAGE_SHIFT); } return va + (pa_offset >> (32 - PAGE_SHIFT)); #else
There is no requirement to disable pagefaults and preemption for these cache management mappings. Replace kmap_atomic_pfn() with kmap_local_pfn(). This allows to remove kmap_atomic_pfn() in the next step. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Cc: Russell King <linux@armlinux.org.uk> Cc: linux-arm-kernel@lists.infradead.org --- V3: New patch --- arch/arm/mm/cache-feroceon-l2.c | 6 +++--- arch/arm/mm/cache-xsc3l2.c | 4 ++-- 2 files changed, 5 insertions(+), 5 deletions(-)