From patchwork Thu Sep 21 16:20:01 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Ryan Roberts X-Patchwork-Id: 13394163 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 04263E7D0A3 for ; Thu, 21 Sep 2023 17:31:14 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-Id:Date:Subject:Cc:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=9Uj2Ha5q8jj2WvLnQUxkNVOMQ8HMzH9UX02fwJsz+iE=; b=NJUKXTDZimAXkz 8pui4AaAyjs8KEU4ImJujMZJHu6OelwlLjFjXt9+Fq92Whkt44VnZ0bdtteheRZHM/snvBGkRtg78 3vWeQpjv/ni/FVEeGz3+yHyYzwqkw5eergXPEexbnbbv929VVigqj+4pEYJwSFUHLMzn1V8PzSDCu ZL9/z6nhvJyJJ/R91rRocwDWzmhwB05vqDujRCF3CpEoX57/2ha5HkG3t5kb1qFLWNA0YhTp9x6ji I9DtDW0dTFFzTk0mNuKutSSIQ1W8Ad+cDOEHE3Uj1VyP40qgILD7uuwcA5A2bMX99nkEfq74nHO5w iVo2BcPzj0EsVxqCPgVg==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.96 #2 (Red Hat Linux)) id 1qjNWA-006erZ-0e; Thu, 21 Sep 2023 17:31:10 +0000 Received: from desiato.infradead.org ([2001:8b0:10b:1:d65d:64ff:fe57:4e05]) by bombadil.infradead.org with esmtps (Exim 4.96 #2 (Red Hat Linux)) id 1qjMPu-006Ue0-1D; Thu, 21 Sep 2023 16:20:38 +0000 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=desiato.20200630; h=Content-Transfer-Encoding:MIME-Version :References:In-Reply-To:Message-Id:Date:Subject:Cc:To:From:Sender:Reply-To: Content-Type:Content-ID:Content-Description; bh=5xwQSctMmYFo12y5XzlJUTq3tE56VCa/T5pbiR1D+lI=; b=NjijmveB9v+um7fjZHi+gD/L5b AZp7k8gqe4P3WFtq/csNM9fAcMFDdw+rUg1L7xHjrICLNeyhfPy0AoRm8U3j/d8CvE+qy6WNnrTjW iQh1CT2ndl07K4j6kYzSl2aDhCOOiLs+eTPsYZQKNnCxxTpuLQcutKOlsrMeXh9geEOee6huA9CmX 1OodACcoDYSiAAWHTduWgTL5Ufw7atHAHDBDTyhr5C3beAlfNrF2R/LIi5IdIArP5TAmfFk9WJqGI v9Wlgwws6AOJKmrTuVbCrpgWw6FAGQuinzQYqfhHWUlMk42ELDqH/zBySDeGbnpdx+UOdAorXSeF8 wiw8RWpQ==; Received: from foss.arm.com ([217.140.110.172]) by desiato.infradead.org with esmtp (Exim 4.96 #2 (Red Hat Linux)) id 1qjMPp-00FUe7-2C; Thu, 21 Sep 2023 16:20:37 +0000 Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.121.207.14]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id 735E21756; Thu, 21 Sep 2023 09:21:10 -0700 (PDT) Received: from e125769.cambridge.arm.com (e125769.cambridge.arm.com [10.1.196.26]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPSA id 07CC83F59C; Thu, 21 Sep 2023 09:20:28 -0700 (PDT) From: Ryan Roberts To: Catalin Marinas , Will Deacon , "James E.J. Bottomley" , Helge Deller , Nicholas Piggin , Christophe Leroy , Paul Walmsley , Palmer Dabbelt , Albert Ou , Heiko Carstens , Vasily Gorbik , Alexander Gordeev , Christian Borntraeger , Sven Schnelle , Gerald Schaefer , "David S. Miller" , Arnd Bergmann , Mike Kravetz , Muchun Song , SeongJae Park , Andrew Morton , Uladzislau Rezki , Christoph Hellwig , Lorenzo Stoakes , Anshuman Khandual , Peter Xu , Axel Rasmussen , Qi Zheng Cc: Ryan Roberts , linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, linux-parisc@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, linux-riscv@lists.infradead.org, linux-s390@vger.kernel.org, sparclinux@vger.kernel.org, linux-mm@kvack.org, stable@vger.kernel.org Subject: [PATCH v1 2/8] powerpc: hugetlb: Convert set_huge_pte_at() to take vma Date: Thu, 21 Sep 2023 17:20:01 +0100 Message-Id: <20230921162007.1630149-3-ryan.roberts@arm.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20230921162007.1630149-1-ryan.roberts@arm.com> References: <20230921162007.1630149-1-ryan.roberts@arm.com> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20230921_172035_569528_3DFFB027 X-CRM114-Status: GOOD ( 13.39 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org In order to fix a bug, arm64 needs access to the vma inside it's implementation of set_huge_pte_at(). Provide for this by converting the mm parameter to be a vma. Any implementations that require the mm can access it via vma->vm_mm. This commit makes the required powerpc modifications. Separate commits update the other arches and core code, before the actual bug is fixed in arm64. No behavioral changes intended. Signed-off-by: Ryan Roberts --- arch/powerpc/include/asm/nohash/32/hugetlb-8xx.h | 3 ++- arch/powerpc/mm/book3s64/hugetlbpage.c | 2 +- arch/powerpc/mm/book3s64/radix_hugetlbpage.c | 2 +- arch/powerpc/mm/nohash/8xx.c | 2 +- arch/powerpc/mm/pgtable.c | 7 ++++++- 5 files changed, 11 insertions(+), 5 deletions(-) diff --git a/arch/powerpc/include/asm/nohash/32/hugetlb-8xx.h b/arch/powerpc/include/asm/nohash/32/hugetlb-8xx.h index de092b04ee1a..fff8cd726bc7 100644 --- a/arch/powerpc/include/asm/nohash/32/hugetlb-8xx.h +++ b/arch/powerpc/include/asm/nohash/32/hugetlb-8xx.h @@ -46,7 +46,8 @@ static inline int check_and_get_huge_psize(int shift) } #define __HAVE_ARCH_HUGE_SET_HUGE_PTE_AT -void set_huge_pte_at(struct mm_struct *mm, unsigned long addr, pte_t *ptep, pte_t pte); +void set_huge_pte_at(struct vm_area_struct *vma, unsigned long addr, pte_t *ptep, pte_t pte); +void __set_huge_pte_at(struct mm_struct *mm, unsigned long addr, pte_t *ptep, pte_t pte); #define __HAVE_ARCH_HUGE_PTE_CLEAR static inline void huge_pte_clear(struct mm_struct *mm, unsigned long addr, diff --git a/arch/powerpc/mm/book3s64/hugetlbpage.c b/arch/powerpc/mm/book3s64/hugetlbpage.c index 3bc0eb21b2a0..ae7fd7c90eb8 100644 --- a/arch/powerpc/mm/book3s64/hugetlbpage.c +++ b/arch/powerpc/mm/book3s64/hugetlbpage.c @@ -147,7 +147,7 @@ void huge_ptep_modify_prot_commit(struct vm_area_struct *vma, unsigned long addr if (radix_enabled()) return radix__huge_ptep_modify_prot_commit(vma, addr, ptep, old_pte, pte); - set_huge_pte_at(vma->vm_mm, addr, ptep, pte); + set_huge_pte_at(vma, addr, ptep, pte); } void __init hugetlbpage_init_defaultsize(void) diff --git a/arch/powerpc/mm/book3s64/radix_hugetlbpage.c b/arch/powerpc/mm/book3s64/radix_hugetlbpage.c index 17075c78d4bc..7cd40a334c3a 100644 --- a/arch/powerpc/mm/book3s64/radix_hugetlbpage.c +++ b/arch/powerpc/mm/book3s64/radix_hugetlbpage.c @@ -58,5 +58,5 @@ void radix__huge_ptep_modify_prot_commit(struct vm_area_struct *vma, atomic_read(&mm->context.copros) > 0) radix__flush_hugetlb_page(vma, addr); - set_huge_pte_at(vma->vm_mm, addr, ptep, pte); + set_huge_pte_at(vma, addr, ptep, pte); } diff --git a/arch/powerpc/mm/nohash/8xx.c b/arch/powerpc/mm/nohash/8xx.c index dbbfe897455d..650a7a8496b6 100644 --- a/arch/powerpc/mm/nohash/8xx.c +++ b/arch/powerpc/mm/nohash/8xx.c @@ -91,7 +91,7 @@ static int __ref __early_map_kernel_hugepage(unsigned long va, phys_addr_t pa, if (new && WARN_ON(pte_present(*ptep) && pgprot_val(prot))) return -EINVAL; - set_huge_pte_at(&init_mm, va, ptep, pte_mkhuge(pfn_pte(pa >> PAGE_SHIFT, prot))); + __set_huge_pte_at(&init_mm, va, ptep, pte_mkhuge(pfn_pte(pa >> PAGE_SHIFT, prot))); return 0; } diff --git a/arch/powerpc/mm/pgtable.c b/arch/powerpc/mm/pgtable.c index 3f86fd217690..9cbcb561a4d8 100644 --- a/arch/powerpc/mm/pgtable.c +++ b/arch/powerpc/mm/pgtable.c @@ -288,7 +288,7 @@ int huge_ptep_set_access_flags(struct vm_area_struct *vma, } #if defined(CONFIG_PPC_8xx) -void set_huge_pte_at(struct mm_struct *mm, unsigned long addr, pte_t *ptep, pte_t pte) +void __set_huge_pte_at(struct mm_struct *mm, unsigned long addr, pte_t *ptep, pte_t pte) { pmd_t *pmd = pmd_off(mm, addr); pte_basic_t val; @@ -310,6 +310,11 @@ void set_huge_pte_at(struct mm_struct *mm, unsigned long addr, pte_t *ptep, pte_ for (i = 0; i < num; i++, entry++, val += SZ_4K) *entry = val; } + +void set_huge_pte_at(struct vm_area_struct *vma, unsigned long addr, pte_t *ptep, pte_t pte) +{ + __set_huge_pte_at(vma->vm_mm, addr, ptep, pte); +} #endif #endif /* CONFIG_HUGETLB_PAGE */