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authorIra Weiny <ira.weiny@intel.com>2020-06-05 02:47:58 +0300
committerLinus Torvalds <torvalds@linux-foundation.org>2020-06-05 05:06:22 +0300
commit20b271dfe9d932b02b067a1f7ba9805c5b8d79bd (patch)
tree3983e8477cd445fe88fba5e741c7032fe4bdf1bd /arch/nds32/mm
parentd8c25836fa16496392bfa6a43908d231dd41bfc6 (diff)
downloadlinux-20b271dfe9d932b02b067a1f7ba9805c5b8d79bd.tar.xz
arch/kmap: define kmap_atomic_prot() for all arch's
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 <ira.weiny@intel.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Reviewed-by: Christoph Hellwig <hch@lst.de> Cc: Al Viro <viro@zeniv.linux.org.uk> Cc: Andy Lutomirski <luto@kernel.org> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Borislav Petkov <bp@alien8.de> Cc: Christian König <christian.koenig@amd.com> Cc: Chris Zankel <chris@zankel.net> Cc: Daniel Vetter <daniel.vetter@ffwll.ch> Cc: Dan Williams <dan.j.williams@intel.com> Cc: Dave Hansen <dave.hansen@linux.intel.com> Cc: "David S. Miller" <davem@davemloft.net> Cc: Helge Deller <deller@gmx.de> Cc: "H. Peter Anvin" <hpa@zytor.com> Cc: Ingo Molnar <mingo@redhat.com> Cc: "James E.J. Bottomley" <James.Bottomley@HansenPartnership.com> Cc: Max Filippov <jcmvbkbc@gmail.com> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Bogendoerfer <tsbogend@alpha.franken.de> Cc: Thomas Gleixner <tglx@linutronix.de> Link: http://lkml.kernel.org/r/20200507150004.1423069-11-ira.weiny@intel.com Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'arch/nds32/mm')
-rw-r--r--arch/nds32/mm/highmem.c6
1 files changed, 3 insertions, 3 deletions
diff --git a/arch/nds32/mm/highmem.c b/arch/nds32/mm/highmem.c
index b11b88956353..4284cd59e21a 100644
--- a/arch/nds32/mm/highmem.c
+++ b/arch/nds32/mm/highmem.c
@@ -10,7 +10,7 @@
#include <asm/fixmap.h>
#include <asm/tlbflush.h>
-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);
@@ -31,7 +31,7 @@ void *kmap_atomic_high(struct page *page)
__nds32__isb();
return (void *)vaddr;
}
-EXPORT_SYMBOL(kmap_atomic_high);
+EXPORT_SYMBOL(kmap_atomic_high_prot);
void kunmap_atomic_high(void *kvaddr)
{