From patchwork Thu Apr 30 20:38:44 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Ira Weiny X-Patchwork-Id: 1280936 Return-Path: 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=2607:7c80:54:e::133; helo=bombadil.infradead.org; envelope-from=linux-snps-arc-bounces+incoming=patchwork.ozlabs.org@lists.infradead.org; receiver=) Authentication-Results: ozlabs.org; dmarc=fail (p=none dis=none) header.from=intel.com Authentication-Results: ozlabs.org; dkim=pass (2048-bit key; unprotected) header.d=lists.infradead.org header.i=@lists.infradead.org header.a=rsa-sha256 header.s=bombadil.20170209 header.b=sHfOMThD; dkim-atps=neutral Received: from bombadil.infradead.org (bombadil.infradead.org [IPv6:2607:7c80:54:e::133]) (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 49CnQZ1750z9sRY for ; Fri, 1 May 2020 06:43:18 +1000 (AEST) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20170209; h=Sender: Content-Transfer-Encoding:Content-Type:Cc:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-Id:Date:Subject:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=iXiZVXF18BkyZatdFLE/6zJpx3cP/28Y7G60KIUlvlg=; b=sHfOMThDsSTFyg PoDQXz5uw3+potqV2Xstd0V+q6+dAynwBVjDd/mIAX1zx014nsQi3y6BqgmWyrOBq3wXkhlaybdvp MMefMC2f5ilD8RPNVlSM4ZEeZ9+gKuOP911+3YlYWzsXWc3p2/+PemIkOi+aBm4z9OmjNM+bvPZ6N CgkHzKdyluHDBtD2i849+7c4lwc5PGG1yM+XalypNF+c+Dbxcu/D3FmPN55O3goGjBIGq7J7tOhGg dyBEV1CY5s85fUXbu2rW5HYOD9o7N7iwOy/Z423SV47aEYkBk9AycfWeN5IHJ3Ta+GDueB8WNULMw 4qudc1jwi7oo0wyo01VA==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.92.3 #3 (Red Hat Linux)) id 1jUG1b-0005bW-Lb; Thu, 30 Apr 2020 20:43:15 +0000 Received: from mga05.intel.com ([192.55.52.43]) by bombadil.infradead.org with esmtps (Exim 4.92.3 #3 (Red Hat Linux)) id 1jUFxS-0000Ko-CB; Thu, 30 Apr 2020 20:39:01 +0000 IronPort-SDR: 1B/VuNSHNEOpz2aE9FWf/V6e6AYMEbNChOhWgPmRvjM24m/Ws63eaUjNdci44uVRYhaBYwG26P 73Q9UkvJkaRg== X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from fmsmga004.fm.intel.com ([10.253.24.48]) by fmsmga105.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 30 Apr 2020 13:38:56 -0700 IronPort-SDR: p9ZLwK3DY/3ZBMjNVK1QpNhHGLLFNIv/z0jV+3IPLeKv16yDMxeGrsuDhDqRZ34LhMAi82QvOg ghKXS0252g1g== X-IronPort-AV: E=Sophos;i="5.73,337,1583222400"; d="scan'208";a="282988008" Received: from iweiny-desk2.sc.intel.com (HELO localhost) ([10.3.52.147]) by fmsmga004-auth.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 30 Apr 2020 13:38:56 -0700 From: ira.weiny@intel.com To: linux-kernel@vger.kernel.org, Andrew Morton , Christian Koenig , Huang Rui Subject: [PATCH V1 09/10] arch/kmap: Define kmap_atomic_prot() for all arch's Date: Thu, 30 Apr 2020 13:38:44 -0700 Message-Id: <20200430203845.582900-10-ira.weiny@intel.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20200430203845.582900-1-ira.weiny@intel.com> References: <20200430203845.582900-1-ira.weiny@intel.com> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20200430_133858_708438_21725BEA X-CRM114-Status: GOOD ( 14.54 ) X-Spam-Score: -2.3 (--) X-Spam-Report: SpamAssassin version 3.4.4 on bombadil.infradead.org summary: Content analysis details: (-2.3 points) pts rule name description ---- ---------------------- -------------------------------------------------- -2.3 RCVD_IN_DNSWL_MED RBL: Sender listed at https://www.dnswl.org/, medium trust [192.55.52.43 listed in list.dnswl.org] -0.0 SPF_PASS SPF: sender matches SPF record 0.0 SPF_HELO_NONE SPF: HELO does not publish an SPF Record X-BeenThere: linux-snps-arc@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Linux on Synopsys ARC Processors List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Peter Zijlstra , Benjamin Herrenschmidt , Dave Hansen , dri-devel@lists.freedesktop.org, "James E.J. Bottomley" , Max Filippov , Paul Mackerras , "H. Peter Anvin" , sparclinux@vger.kernel.org, Ira Weiny , Thomas Gleixner , Helge Deller , x86@kernel.org, linux-csky@vger.kernel.org, Ingo Molnar , linux-snps-arc@lists.infradead.org, linux-xtensa@linux-xtensa.org, Borislav Petkov , Andy Lutomirski , Dan Williams , linux-arm-kernel@lists.infradead.org, Chris Zankel , Thomas Bogendoerfer , linux-parisc@vger.kernel.org, linux-mips@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, "David S. Miller" Sender: "linux-snps-arc" Errors-To: linux-snps-arc-bounces+incoming=patchwork.ozlabs.org@lists.infradead.org From: Ira Weiny To support kmap_atomic_prot(), all architectures need to support protections passed to their kmap_atomic_high() function. Pass protections into kmap_atomic_high() and change the name to kmap_atomic_high_prot() to match. Then define kmap_atomic_prot() as a core function which calls kmap_atomic_high_prot() when needed. Finally, redefine kmap_atomic() as a wrapper of kmap_atomic_prot() with the default kmap_prot exported by the architectures. Signed-off-by: Ira Weiny Reviewed-by: Christoph Hellwig --- arch/arc/include/asm/highmem.h | 2 +- arch/arc/mm/highmem.c | 6 +++--- arch/arm/include/asm/highmem.h | 2 +- arch/arm/mm/highmem.c | 6 +++--- arch/csky/include/asm/highmem.h | 2 +- arch/csky/mm/highmem.c | 6 +++--- arch/microblaze/include/asm/highmem.h | 7 +------ arch/microblaze/mm/highmem.c | 4 ++-- arch/mips/include/asm/highmem.h | 2 +- arch/mips/mm/highmem.c | 6 +++--- arch/nds32/include/asm/highmem.h | 2 +- arch/nds32/mm/highmem.c | 6 +++--- arch/powerpc/include/asm/highmem.h | 8 +------- arch/powerpc/mm/highmem.c | 4 ++-- arch/sparc/include/asm/highmem.h | 2 +- arch/sparc/mm/highmem.c | 6 +++--- arch/x86/include/asm/highmem.h | 6 +----- arch/x86/mm/highmem_32.c | 4 ++-- arch/xtensa/include/asm/highmem.h | 2 +- arch/xtensa/mm/highmem.c | 6 +++--- include/linux/highmem.h | 5 +++-- 21 files changed, 40 insertions(+), 54 deletions(-) diff --git a/arch/arc/include/asm/highmem.h b/arch/arc/include/asm/highmem.h index e16531495620..09f86bde6809 100644 --- a/arch/arc/include/asm/highmem.h +++ b/arch/arc/include/asm/highmem.h @@ -30,7 +30,7 @@ #include -extern void *kmap_atomic_high(struct page *page); +extern void *kmap_atomic_high_prot(struct page *page, pgprot_t prot); extern void kunmap_atomic_high(void *kvaddr); extern void kmap_init(void); diff --git a/arch/arc/mm/highmem.c b/arch/arc/mm/highmem.c index 5d3eab4ac0b0..479b0d72d3cf 100644 --- a/arch/arc/mm/highmem.c +++ b/arch/arc/mm/highmem.c @@ -49,7 +49,7 @@ extern pte_t * pkmap_page_table; static pte_t * fixmap_page_table; -void *kmap_atomic_high(struct page *page) +void *kmap_atomic_high_prot(struct page *page, pgprot_t prot) { int idx, cpu_idx; unsigned long vaddr; @@ -59,11 +59,11 @@ void *kmap_atomic_high(struct page *page) vaddr = FIXMAP_ADDR(idx); set_pte_at(&init_mm, vaddr, fixmap_page_table + idx, - mk_pte(page, kmap_prot)); + mk_pte(page, prot)); return (void *)vaddr; } -EXPORT_SYMBOL(kmap_atomic_high); +EXPORT_SYMBOL(kmap_atomic_high_prot); void kunmap_atomic_high(void *kv) { diff --git a/arch/arm/include/asm/highmem.h b/arch/arm/include/asm/highmem.h index a9d5e9bce1cc..e35f2f73f6aa 100644 --- a/arch/arm/include/asm/highmem.h +++ b/arch/arm/include/asm/highmem.h @@ -60,7 +60,7 @@ static inline void *kmap_high_get(struct page *page) * when CONFIG_HIGHMEM is not set. */ #ifdef CONFIG_HIGHMEM -extern void *kmap_atomic_high(struct page *page); +extern void *kmap_atomic_high_prot(struct page *page, pgprot_t prot); extern void kunmap_atomic_high(void *kvaddr); extern void *kmap_atomic_pfn(unsigned long pfn); #endif diff --git a/arch/arm/mm/highmem.c b/arch/arm/mm/highmem.c index ac8394655a6e..e013f6b81328 100644 --- a/arch/arm/mm/highmem.c +++ b/arch/arm/mm/highmem.c @@ -31,7 +31,7 @@ static inline pte_t get_fixmap_pte(unsigned long vaddr) return *ptep; } -void *kmap_atomic_high(struct page *page) +void *kmap_atomic_high_prot(struct page *page, pgprot_t prot) { unsigned int idx; unsigned long vaddr; @@ -67,11 +67,11 @@ void *kmap_atomic_high(struct page *page) * in place, so the contained TLB flush ensures the TLB is updated * with the new mapping. */ - set_fixmap_pte(idx, mk_pte(page, kmap_prot)); + set_fixmap_pte(idx, mk_pte(page, prot)); return (void *)vaddr; } -EXPORT_SYMBOL(kmap_atomic_high); +EXPORT_SYMBOL(kmap_atomic_high_prot); void kunmap_atomic_high(void *kvaddr) { diff --git a/arch/csky/include/asm/highmem.h b/arch/csky/include/asm/highmem.h index 5bbbe59e60a9..59854c7ccf78 100644 --- a/arch/csky/include/asm/highmem.h +++ b/arch/csky/include/asm/highmem.h @@ -32,7 +32,7 @@ extern pte_t *pkmap_page_table; #define ARCH_HAS_KMAP_FLUSH_TLB extern void kmap_flush_tlb(unsigned long addr); -extern void *kmap_atomic_high(struct page *page); +extern void *kmap_atomic_high_prot(struct page *page, pgprot_t prot); extern void kunmap_atomic_high(void *kvaddr); extern void *kmap_atomic_pfn(unsigned long pfn); extern struct page *kmap_atomic_to_page(void *ptr); diff --git a/arch/csky/mm/highmem.c b/arch/csky/mm/highmem.c index f4311669b5bb..3ae5c8cd7619 100644 --- a/arch/csky/mm/highmem.c +++ b/arch/csky/mm/highmem.c @@ -21,7 +21,7 @@ EXPORT_SYMBOL(kmap_flush_tlb); EXPORT_SYMBOL(kmap); -void *kmap_atomic_high(struct page *page) +void *kmap_atomic_high_prot(struct page *page, pgprot_t prot) { unsigned long vaddr; int idx, type; @@ -32,12 +32,12 @@ void *kmap_atomic_high(struct page *page) #ifdef CONFIG_DEBUG_HIGHMEM BUG_ON(!pte_none(*(kmap_pte - idx))); #endif - set_pte(kmap_pte-idx, mk_pte(page, kmap_prot)); + set_pte(kmap_pte-idx, mk_pte(page, prot)); flush_tlb_one((unsigned long)vaddr); return (void *)vaddr; } -EXPORT_SYMBOL(kmap_atomic_high); +EXPORT_SYMBOL(kmap_atomic_high_prot); void kunmap_atomic_high(void *kvaddr) { diff --git a/arch/microblaze/include/asm/highmem.h b/arch/microblaze/include/asm/highmem.h index 66521fdc3a47..eb0a2cb883bd 100644 --- a/arch/microblaze/include/asm/highmem.h +++ b/arch/microblaze/include/asm/highmem.h @@ -51,14 +51,9 @@ extern pte_t *pkmap_page_table; #define PKMAP_NR(virt) ((virt - PKMAP_BASE) >> PAGE_SHIFT) #define PKMAP_ADDR(nr) (PKMAP_BASE + ((nr) << PAGE_SHIFT)) -extern void *kmap_atomic_prot(struct page *page, pgprot_t prot); +extern void *kmap_atomic_high_prot(struct page *page, pgprot_t prot); extern void kunmap_atomic_high(void *kvaddr); -static inline void *kmap_atomic_high(struct page *page) -{ - return kmap_atomic_prot(page, kmap_prot); -} - #define flush_cache_kmaps() { flush_icache(); flush_dcache(); } #endif /* __KERNEL__ */ diff --git a/arch/microblaze/mm/highmem.c b/arch/microblaze/mm/highmem.c index 1026aeffe11a..ee8a422b2b76 100644 --- a/arch/microblaze/mm/highmem.c +++ b/arch/microblaze/mm/highmem.c @@ -32,7 +32,7 @@ */ #include -void *kmap_atomic_prot(struct page *page, pgprot_t prot) +void *kmap_atomic_high_prot(struct page *page, pgprot_t prot) { unsigned long vaddr; @@ -49,7 +49,7 @@ void *kmap_atomic_prot(struct page *page, pgprot_t prot) return (void *) vaddr; } -EXPORT_SYMBOL(kmap_atomic_prot); +EXPORT_SYMBOL(kmap_atomic_high_prot); void kunmap_atomic_high(void *kvaddr) { diff --git a/arch/mips/include/asm/highmem.h b/arch/mips/include/asm/highmem.h index d9f774bd4938..c9f46b450a68 100644 --- a/arch/mips/include/asm/highmem.h +++ b/arch/mips/include/asm/highmem.h @@ -48,7 +48,7 @@ extern pte_t *pkmap_page_table; #define ARCH_HAS_KMAP_FLUSH_TLB extern void kmap_flush_tlb(unsigned long addr); -extern void *kmap_atomic_high(struct page *page); +extern void *kmap_atomic_high_prot(struct page *page, pgprot_t prot); extern void kunmap_atomic_high(void *kvaddr); extern void *kmap_atomic_pfn(unsigned long pfn); diff --git a/arch/mips/mm/highmem.c b/arch/mips/mm/highmem.c index 87023bd1a33c..37e244cdb14e 100644 --- a/arch/mips/mm/highmem.c +++ b/arch/mips/mm/highmem.c @@ -18,7 +18,7 @@ void kmap_flush_tlb(unsigned long addr) } EXPORT_SYMBOL(kmap_flush_tlb); -void *kmap_atomic_high(struct page *page) +void *kmap_atomic_high_prot(struct page *page, pgprot_t prot) { unsigned long vaddr; int idx, type; @@ -29,12 +29,12 @@ void *kmap_atomic_high(struct page *page) #ifdef CONFIG_DEBUG_HIGHMEM BUG_ON(!pte_none(*(kmap_pte - idx))); #endif - set_pte(kmap_pte-idx, mk_pte(page, kmap_prot)); + set_pte(kmap_pte-idx, mk_pte(page, prot)); local_flush_tlb_one((unsigned long)vaddr); return (void*) vaddr; } -EXPORT_SYMBOL(kmap_atomic_high); +EXPORT_SYMBOL(kmap_atomic_high_prot); void kunmap_atomic_high(void *kvaddr) { diff --git a/arch/nds32/include/asm/highmem.h b/arch/nds32/include/asm/highmem.h index 97648b678108..1f9fc74d112d 100644 --- a/arch/nds32/include/asm/highmem.h +++ b/arch/nds32/include/asm/highmem.h @@ -51,7 +51,7 @@ extern void kmap_init(void); * when CONFIG_HIGHMEM is not set. */ #ifdef CONFIG_HIGHMEM -extern void *kmap_atomic_high(struct page *page); +extern void *kmap_atomic_high_prot(struct page *page, pgprot_t prot); extern void kunmap_atomic_high(void *kvaddr); extern void *kmap_atomic_pfn(unsigned long pfn); extern struct page *kmap_atomic_to_page(void *ptr); diff --git a/arch/nds32/mm/highmem.c b/arch/nds32/mm/highmem.c index 809f8c830f06..63ded527c1e8 100644 --- a/arch/nds32/mm/highmem.c +++ b/arch/nds32/mm/highmem.c @@ -10,7 +10,7 @@ #include #include -void *kmap_atomic_high(struct page *page) +void *kmap_atomic_high_prot(struct page *page, pgprot_t prot) { unsigned int idx; unsigned long vaddr, pte; @@ -21,7 +21,7 @@ void *kmap_atomic_high(struct page *page) idx = type + KM_TYPE_NR * smp_processor_id(); vaddr = __fix_to_virt(FIX_KMAP_BEGIN + idx); - pte = (page_to_pfn(page) << PAGE_SHIFT) | (kmap_prot); + pte = (page_to_pfn(page) << PAGE_SHIFT) | prot; ptep = pte_offset_kernel(pmd_off_k(vaddr), vaddr); set_pte(ptep, pte); @@ -32,7 +32,7 @@ void *kmap_atomic_high(struct page *page) return (void *)vaddr; } -EXPORT_SYMBOL(kmap_atomic_high); +EXPORT_SYMBOL(kmap_atomic_high_prot); void kunmap_atomic_high(void *kvaddr) { diff --git a/arch/powerpc/include/asm/highmem.h b/arch/powerpc/include/asm/highmem.h index d264aebcaa9b..edd01bbe5a44 100644 --- a/arch/powerpc/include/asm/highmem.h +++ b/arch/powerpc/include/asm/highmem.h @@ -59,15 +59,9 @@ extern pte_t *pkmap_page_table; #define PKMAP_NR(virt) ((virt-PKMAP_BASE) >> PAGE_SHIFT) #define PKMAP_ADDR(nr) (PKMAP_BASE + ((nr) << PAGE_SHIFT)) -extern void *kmap_atomic_prot(struct page *page, pgprot_t prot); +extern void *kmap_atomic_high_prot(struct page *page, pgprot_t prot); extern void kunmap_atomic_high(void *kvaddr); -static inline void *kmap_atomic_high(struct page *page) -{ - return kmap_atomic_prot(page, kmap_prot); -} - - #define flush_cache_kmaps() flush_cache_all() #endif /* __KERNEL__ */ diff --git a/arch/powerpc/mm/highmem.c b/arch/powerpc/mm/highmem.c index 162958321e28..35071c2913f1 100644 --- a/arch/powerpc/mm/highmem.c +++ b/arch/powerpc/mm/highmem.c @@ -24,7 +24,7 @@ #include #include -void *kmap_atomic_prot(struct page *page, pgprot_t prot) +void *kmap_atomic_high_prot(struct page *page, pgprot_t prot) { unsigned long vaddr; int idx, type; @@ -38,7 +38,7 @@ void *kmap_atomic_prot(struct page *page, pgprot_t prot) return (void*) vaddr; } -EXPORT_SYMBOL(kmap_atomic_prot); +EXPORT_SYMBOL(kmap_atomic_high_prot); void kunmap_atomic_high(void *kvaddr) { diff --git a/arch/sparc/include/asm/highmem.h b/arch/sparc/include/asm/highmem.h index 94dd6e4c5fa4..d5c5700672de 100644 --- a/arch/sparc/include/asm/highmem.h +++ b/arch/sparc/include/asm/highmem.h @@ -50,7 +50,7 @@ void kmap_init(void) __init; #define PKMAP_END (PKMAP_ADDR(LAST_PKMAP)) -void *kmap_atomic_high(struct page *page); +void *kmap_atomic_high_prot(struct page *page, pgprot_t prot); void kunmap_atomic_high(void *kvaddr); #define flush_cache_kmaps() flush_cache_all() diff --git a/arch/sparc/mm/highmem.c b/arch/sparc/mm/highmem.c index 9f06d75e88e1..414f578d1e57 100644 --- a/arch/sparc/mm/highmem.c +++ b/arch/sparc/mm/highmem.c @@ -54,7 +54,7 @@ void __init kmap_init(void) kmap_prot = __pgprot(SRMMU_ET_PTE | SRMMU_PRIV | SRMMU_CACHE); } -void *kmap_atomic_high(struct page *page) +void *kmap_atomic_high_prot(struct page *page, pgprot_t prot) { unsigned long vaddr; long idx, type; @@ -73,7 +73,7 @@ void *kmap_atomic_high(struct page *page) #ifdef CONFIG_DEBUG_HIGHMEM BUG_ON(!pte_none(*(kmap_pte-idx))); #endif - set_pte(kmap_pte-idx, mk_pte(page, kmap_prot)); + set_pte(kmap_pte-idx, mk_pte(page, prot)); /* XXX Fix - Anton */ #if 0 __flush_tlb_one(vaddr); @@ -83,7 +83,7 @@ void *kmap_atomic_high(struct page *page) return (void*) vaddr; } -EXPORT_SYMBOL(kmap_atomic_high); +EXPORT_SYMBOL(kmap_atomic_high_prot); void kunmap_atomic_high(void *kvaddr) { diff --git a/arch/x86/include/asm/highmem.h b/arch/x86/include/asm/highmem.h index ff87aba96eee..009b8e22e906 100644 --- a/arch/x86/include/asm/highmem.h +++ b/arch/x86/include/asm/highmem.h @@ -58,11 +58,7 @@ extern unsigned long highstart_pfn, highend_pfn; #define PKMAP_NR(virt) ((virt-PKMAP_BASE) >> PAGE_SHIFT) #define PKMAP_ADDR(nr) (PKMAP_BASE + ((nr) << PAGE_SHIFT)) -extern void *kmap_atomic_prot(struct page *page, pgprot_t prot); -void *kmap_atomic_high(struct page *page) -{ - return kmap_atomic_prot(page, kmap_prot); -} +void *kmap_atomic_high_prot(struct page *page, pgprot_t prot); void kunmap_atomic_high(void *kvaddr); void *kmap_atomic_pfn(unsigned long pfn); void *kmap_atomic_prot_pfn(unsigned long pfn, pgprot_t prot); diff --git a/arch/x86/mm/highmem_32.c b/arch/x86/mm/highmem_32.c index af07a6842743..075fe51317b0 100644 --- a/arch/x86/mm/highmem_32.c +++ b/arch/x86/mm/highmem_32.c @@ -4,7 +4,7 @@ #include /* for totalram_pages */ #include -void *kmap_atomic_prot(struct page *page, pgprot_t prot) +void *kmap_atomic_high_prot(struct page *page, pgprot_t prot) { unsigned long vaddr; int idx, type; @@ -18,7 +18,7 @@ void *kmap_atomic_prot(struct page *page, pgprot_t prot) return (void *)vaddr; } -EXPORT_SYMBOL(kmap_atomic_prot); +EXPORT_SYMBOL(kmap_atomic_high_prot); /* * This is the same as kmap_atomic() but can map memory that doesn't diff --git a/arch/xtensa/include/asm/highmem.h b/arch/xtensa/include/asm/highmem.h index a60a02dc68f6..7152aeb1e3a4 100644 --- a/arch/xtensa/include/asm/highmem.h +++ b/arch/xtensa/include/asm/highmem.h @@ -68,7 +68,7 @@ static inline void flush_cache_kmaps(void) flush_cache_all(); } -void *kmap_atomic_high(struct page *page); +void *kmap_atomic_high_prot(struct page *page, pgprot_t prot); void kunmap_atomic_high(void *kvaddr); void kmap_init(void); diff --git a/arch/xtensa/mm/highmem.c b/arch/xtensa/mm/highmem.c index 8c58c4c37033..fe56644d7b23 100644 --- a/arch/xtensa/mm/highmem.c +++ b/arch/xtensa/mm/highmem.c @@ -37,7 +37,7 @@ static inline enum fixed_addresses kmap_idx(int type, unsigned long color) color; } -void *kmap_atomic_high(struct page *page) +void *kmap_atomic_high_prot(struct page *page, pgprot_t prot) { enum fixed_addresses idx; unsigned long vaddr; @@ -48,11 +48,11 @@ void *kmap_atomic_high(struct page *page) #ifdef CONFIG_DEBUG_HIGHMEM BUG_ON(!pte_none(*(kmap_pte + idx))); #endif - set_pte(kmap_pte + idx, mk_pte(page, kmap_prot)); + set_pte(kmap_pte + idx, mk_pte(page, prot)); return (void *)vaddr; } -EXPORT_SYMBOL(kmap_atomic_high); +EXPORT_SYMBOL(kmap_atomic_high_prot); void kunmap_atomic_high(void *kvaddr) { diff --git a/include/linux/highmem.h b/include/linux/highmem.h index 601df07607a4..b10e8a39ae60 100644 --- a/include/linux/highmem.h +++ b/include/linux/highmem.h @@ -74,14 +74,15 @@ static inline void kunmap(struct page *page) * be used in IRQ contexts, so in some (very limited) cases we need * it. */ -static inline void *kmap_atomic(struct page *page) +static inline void *kmap_atomic_prot(struct page *page, pgprot_t prot) { preempt_disable(); pagefault_disable(); if (!PageHighMem(page)) return page_address(page); - return kmap_atomic_high(page); + return kmap_atomic_high_prot(page, prot); } +#define kmap_atomic(page) kmap_atomic_prot(page, kmap_prot) /* declarations for linux/mm/highmem.c */ unsigned int nr_free_highpages(void);