[PATCH V1 08/10] arch/kmap: Don't hard code kmap_prot values

From: ira.weiny@intel.com
To: linux-kernel@vger.kernel.org,
	Andrew Morton <akpm@linux-foundation.org>,
	Christian Koenig <christian.koenig@amd.com>,
	Huang Rui <ray.huang@amd.com>
Cc: Ira Weiny <ira.weiny@intel.com>,
	Thomas Bogendoerfer <tsbogend@alpha.franken.de>,
	"James E.J. Bottomley" <James.Bottomley@HansenPartnership.com>,
	Helge Deller <deller@gmx.de>,
	Benjamin Herrenschmidt <benh@kernel.crashing.org>,
	Paul Mackerras <paulus@samba.org>,
	"David S. Miller" <davem@davemloft.net>,
	Thomas Gleixner <tglx@linutronix.de>,
	Ingo Molnar <mingo@redhat.com>, Borislav Petkov <bp@alien8.de>,
	x86@kernel.org, "H. Peter Anvin" <hpa@zytor.com>,
	Dave Hansen <dave.hansen@linux.intel.com>,
	Andy Lutomirski <luto@kernel.org>,
	Peter Zijlstra <peterz@infradead.org>,
	Chris Zankel <chris@zankel.net>,
	Max Filippov <jcmvbkbc@gmail.com>,
	Dan Williams <dan.j.williams@intel.com>,
	linux-snps-arc@lists.infradead.org,
	linux-arm-kernel@lists.infradead.org, linux-csky@vger.kernel.org,
	linux-mips@vger.kernel.org, linux-parisc@vger.kernel.org,
	linuxppc-dev@lists.ozlabs.org, sparclinux@vger.kernel.org,
	linux-xtensa@linux-xtensa.org, dri-devel@lists.freedesktop.org
Subject: [PATCH V1 08/10] arch/kmap: Don't hard code kmap_prot values
Date: Thu, 30 Apr 2020 13:38:43 -0700	[thread overview]
Message-ID: <20200430203845.582900-9-ira.weiny@intel.com> (raw)
In-Reply-To: <20200430203845.582900-1-ira.weiny@intel.com>

From: Ira Weiny <ira.weiny@intel.com>

To support kmap_atomic_prot() on all architectures each arch must
support protections passed in to them.

Change csky, mips, nds32 and xtensa to use their global kmap_prot value
rather than a hard coded value which was equal.

Signed-off-by: Ira Weiny <ira.weiny@intel.com>
---
 arch/csky/mm/highmem.c   | 2 +-
 arch/mips/mm/highmem.c   | 2 +-
 arch/nds32/mm/highmem.c  | 2 +-
 arch/xtensa/mm/highmem.c | 2 +-
 4 files changed, 4 insertions(+), 4 deletions(-)

diff --git a/arch/csky/mm/highmem.c b/arch/csky/mm/highmem.c
index 0aafbbbe651c..f4311669b5bb 100644
--- a/arch/csky/mm/highmem.c
+++ b/arch/csky/mm/highmem.c
@@ -32,7 +32,7 @@ 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, PAGE_KERNEL));
+	set_pte(kmap_pte-idx, mk_pte(page, kmap_prot));
 	flush_tlb_one((unsigned long)vaddr);
 
 	return (void *)vaddr;
diff --git a/arch/mips/mm/highmem.c b/arch/mips/mm/highmem.c
index 155fbb107b35..87023bd1a33c 100644
--- a/arch/mips/mm/highmem.c
+++ b/arch/mips/mm/highmem.c
@@ -29,7 +29,7 @@ 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, PAGE_KERNEL));
+	set_pte(kmap_pte-idx, mk_pte(page, kmap_prot));
 	local_flush_tlb_one((unsigned long)vaddr);
 
 	return (void*) vaddr;
diff --git a/arch/nds32/mm/highmem.c b/arch/nds32/mm/highmem.c
index f6e6915c0d31..809f8c830f06 100644
--- a/arch/nds32/mm/highmem.c
+++ b/arch/nds32/mm/highmem.c
@@ -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) | (PAGE_KERNEL);
+	pte = (page_to_pfn(page) << PAGE_SHIFT) | (kmap_prot);
 	ptep = pte_offset_kernel(pmd_off_k(vaddr), vaddr);
 	set_pte(ptep, pte);
 
diff --git a/arch/xtensa/mm/highmem.c b/arch/xtensa/mm/highmem.c
index f57a7770eb08..8c58c4c37033 100644
--- a/arch/xtensa/mm/highmem.c
+++ b/arch/xtensa/mm/highmem.c
@@ -48,7 +48,7 @@ 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, PAGE_KERNEL_EXEC));
+	set_pte(kmap_pte + idx, mk_pte(page, kmap_prot));
 
 	return (void *)vaddr;
 }
-- 
2.25.1

