Message ID | 6d75e7f-2266-1dda-8a70-c52c27f44da7@google.com (mailing list archive) |
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State | New |
Headers | show
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[172.10.233.147]) by smtp.gmail.com with ESMTPSA id l64-20020a0dc943000000b0055aad7d3f34sm3766659ywd.142.2023.05.09.22.09.51 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 09 May 2023 22:09:54 -0700 (PDT) Date: Tue, 9 May 2023 22:09:50 -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 22/23] x86: sme_populate_pgd() use pte_offset_kernel() In-Reply-To: <77a5d8c-406b-7068-4f17-23b7ac53bc83@google.com> Message-ID: <6d75e7f-2266-1dda-8a70-c52c27f44da7@google.com> References: <77a5d8c-406b-7068-4f17-23b7ac53bc83@google.com> MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII X-Stat-Signature: zducwwxq48a4uw75bxd4n468rh77o5kr X-Rspam-User: X-Rspamd-Queue-Id: A029840007 X-Rspamd-Server: rspam07 X-HE-Tag: 1683695395-11566 X-HE-Meta: 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 Lwz0LrXR xBIyQ3GxawYojeMeLYX2lucUGZu2GRTqSTA1iuwek+v52EgYExXclKbQZT+Es1lnxBTFAFq9GLR5jKGGtdLtLb+ZQc0iQfenM5+P7AUFwx8pxtLTKoaQfqA4TaEtvCH+cMmFvNjUT+/RYxa3dcPm0NS3+IWriWV+NTB7AsxkLDzgi03LVX1bUwLfpq2afxBdH5cdFpRuXwgTXYYoh8KRNvdCa4eztieLgy8xqiQ0G8WO6ga+tGVTgWsbgvOe6oXkPTNEDb3uECJ/skNYWBAvm4r+oslfDSn0V7XvV70RiVDcI7iJuqrQ6i4U6OVQRj2UWt0/gBDILzuUcduGnYCvGj7qlRnV1wfDyz0ukBK0cg8DODbSh+S1npIbUOBbY1xSzCaN6i5A4kCFS8NSlRun8eMei4n3VPuxZ8HL5y/otaaL7NTc/zduk0xkeT75+n3EQ9C0EsspuEIlfup4= X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: <linux-mm.kvack.org> |
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arch: allow pte_offset_map[_lock]() to fail
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expand
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diff --git a/arch/x86/mm/mem_encrypt_identity.c b/arch/x86/mm/mem_encrypt_identity.c index c6efcf559d88..a1ab542bdfd6 100644 --- a/arch/x86/mm/mem_encrypt_identity.c +++ b/arch/x86/mm/mem_encrypt_identity.c @@ -188,7 +188,7 @@ static void __init sme_populate_pgd(struct sme_populate_pgd_data *ppd) if (pmd_large(*pmd)) return; - pte = pte_offset_map(pmd, ppd->vaddr); + pte = pte_offset_kernel(pmd, ppd->vaddr); if (pte_none(*pte)) set_pte(pte, __pte(ppd->paddr | ppd->pte_flags)); }
sme_populate_pgd() is an __init function for sme_encrypt_kernel(): 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/x86/mm/mem_encrypt_identity.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)