Message ID | 12c4693d-8bb3-2852-8cf5-9777b427d770@google.com |
---|---|
State | New |
Headers | show
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[172.10.233.147]) by smtp.gmail.com with ESMTPSA id l4-20020a81d544000000b0055b46dac76esm3814196ywj.116.2023.05.09.21.54.00 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 09 May 2023 21:54:03 -0700 (PDT) Date: Tue, 9 May 2023 21:54:00 -0700 (PDT) From: Hugh Dickins <hughd@google.com> X-X-Sender: hugh@ripple.attlocal.net To: Andrew Morton <akpm@linux-foundation.org> cc: Mike Kravetz <mike.kravetz@oracle.com>, Mike Rapoport <rppt@kernel.org>, "Kirill A. Shutemov" <kirill.shutemov@linux.intel.com>, Matthew Wilcox <willy@infradead.org>, David Hildenbrand <david@redhat.com>, Suren Baghdasaryan <surenb@google.com>, Qi Zheng <zhengqi.arch@bytedance.com>, Russell King <linux@armlinux.org.uk>, Catalin Marinas <catalin.marinas@arm.com>, Will Deacon <will@kernel.org>, Geert Uytterhoeven <geert@linux-m68k.org>, Greg Ungerer <gerg@linux-m68k.org>, Michal Simek <monstr@monstr.eu>, Thomas Bogendoerfer <tsbogend@alpha.franken.de>, Helge Deller <deller@gmx.de>, John David Anglin <dave.anglin@bell.net>, "Aneesh Kumar K.V" <aneesh.kumar@linux.ibm.com>, Michael Ellerman <mpe@ellerman.id.au>, Alexandre Ghiti <alexghiti@rivosinc.com>, Palmer Dabbelt <palmer@dabbelt.com>, Heiko Carstens <hca@linux.ibm.com>, Christian Borntraeger <borntraeger@linux.ibm.com>, Claudio Imbrenda <imbrenda@linux.ibm.com>, John Paul Adrian Glaubitz <glaubitz@physik.fu-berlin.de>, "David S. Miller" <davem@davemloft.net>, Chris Zankel <chris@zankel.net>, Max Filippov <jcmvbkbc@gmail.com>, x86@kernel.org, linux-arm-kernel@lists.infradead.org, linux-ia64@vger.kernel.org, linux-m68k@lists.linux-m68k.org, linux-mips@vger.kernel.org, linux-parisc@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, linux-riscv@lists.infradead.org, linux-s390@vger.kernel.org, linux-sh@vger.kernel.org, sparclinux@vger.kernel.org, linux-kernel@vger.kernel.org, linux-mm@kvack.org Subject: [PATCH 09/23] parisc: unmap_uncached_pte() use pte_offset_kernel() In-Reply-To: <77a5d8c-406b-7068-4f17-23b7ac53bc83@google.com> Message-ID: <12c4693d-8bb3-2852-8cf5-9777b427d770@google.com> References: <77a5d8c-406b-7068-4f17-23b7ac53bc83@google.com> MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII X-Spam-Status: No, score=-17.6 required=5.0 tests=BAYES_00,DKIMWL_WL_MED, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF, ENV_AND_HDR_SPF_MATCH,RCVD_IN_DNSWL_NONE,SPF_HELO_NONE,SPF_PASS, T_SCC_BODY_TEXT_LINE,USER_IN_DEF_DKIM_WL,USER_IN_DEF_SPF_WL autolearn=unavailable autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: <sparclinux.vger.kernel.org> X-Mailing-List: sparclinux@vger.kernel.org |
Series |
arch: allow pte_offset_map[_lock]() to fail
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expand
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diff --git a/arch/parisc/kernel/pci-dma.c b/arch/parisc/kernel/pci-dma.c index ba87f791323b..52d5f8a5cdd2 100644 --- a/arch/parisc/kernel/pci-dma.c +++ b/arch/parisc/kernel/pci-dma.c @@ -164,7 +164,7 @@ static inline void unmap_uncached_pte(pmd_t * pmd, unsigned long vaddr, pmd_clear(pmd); return; } - pte = pte_offset_map(pmd, vaddr); + pte = pte_offset_kernel(pmd, vaddr); vaddr &= ~PMD_MASK; end = vaddr + size; if (end > PMD_SIZE)
unmap_uncached_pte() is working from pgd_offset_k(vaddr), so it should use pte_offset_kernel() instead of pte_offset_map(), to avoid the question of whether a pte_unmap() will be needed to balance. Signed-off-by: Hugh Dickins <hughd@google.com> --- arch/parisc/kernel/pci-dma.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)