diff options
| author | Christoph Hellwig <hch@lst.de> | 2019-07-11 20:57:11 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2019-07-12 11:05:44 -0700 |
| commit | 7b9afb86b6328f10dc2cad9223d7def12d60e505 (patch) | |
| tree | ce4c129badb2b8e005c4bbadbaaf49aa9cf44d96 /arch/sparc/include/asm/pgtable_64.h | |
| parent | 5875509d2f30eb8963163f255ded98095989142f (diff) | |
sparc64: use the generic get_user_pages_fast code
The sparc64 code is mostly equivalent to the generic one, minus various
bugfixes and two arch overrides that this patch adds to pgtable.h.
Link: http://lkml.kernel.org/r/20190625143715.1689-10-hch@lst.de
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Khalid Aziz <khalid.aziz@oracle.com>
Cc: David Miller <davem@davemloft.net>
Cc: Andrey Konovalov <andreyknvl@google.com>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: James Hogan <jhogan@kernel.org>
Cc: Jason Gunthorpe <jgg@mellanox.com>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: Nicholas Piggin <npiggin@gmail.com>
Cc: Paul Burton <paul.burton@mips.com>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: Rich Felker <dalias@libc.org>
Cc: Yoshinori Sato <ysato@users.sourceforge.jp>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'arch/sparc/include/asm/pgtable_64.h')
| -rw-r--r-- | arch/sparc/include/asm/pgtable_64.h | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/arch/sparc/include/asm/pgtable_64.h b/arch/sparc/include/asm/pgtable_64.h index 8358ba00aa5d..1599de730532 100644 --- a/arch/sparc/include/asm/pgtable_64.h +++ b/arch/sparc/include/asm/pgtable_64.h @@ -1100,6 +1100,24 @@ static inline unsigned long untagged_addr(unsigned long start) } #define untagged_addr untagged_addr +static inline bool pte_access_permitted(pte_t pte, bool write) +{ + u64 prot; + + if (tlb_type == hypervisor) { + prot = _PAGE_PRESENT_4V | _PAGE_P_4V; + if (write) + prot |= _PAGE_WRITE_4V; + } else { + prot = _PAGE_PRESENT_4U | _PAGE_P_4U; + if (write) + prot |= _PAGE_WRITE_4U; + } + + return (pte_val(pte) & (prot | _PAGE_SPECIAL)) == prot; +} +#define pte_access_permitted pte_access_permitted + #include <asm/tlbflush.h> #include <asm-generic/pgtable.h> |