summaryrefslogtreecommitdiff
path: root/arch/arc
diff options
context:
space:
mode:
authorMike Rapoport <rppt@linux.ibm.com>2020-06-08 21:33:05 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2020-06-09 09:39:13 -0700
commite05c7b1f2bc4b7b28199b9a7572f73436d97317e (patch)
treee0aafcf941689ba227fe55e2af9e915925c812cd /arch/arc
parent88107d330de4f175705a3ea03147feb0d7e68499 (diff)
mm: pgtable: add shortcuts for accessing kernel PMD and PTE
The powerpc 32-bit implementation of pgtable has nice shortcuts for accessing kernel PMD and PTE for a given virtual address. Make these helpers available for all architectures. [rppt@linux.ibm.com: microblaze: fix page table traversal in setup_rt_frame()] Link: http://lkml.kernel.org/r/20200518191511.GD1118872@kernel.org [akpm@linux-foundation.org: s/pmd_ptr_k/pmd_off_k/ in various powerpc places] Signed-off-by: Mike Rapoport <rppt@linux.ibm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Cc: Arnd Bergmann <arnd@arndb.de> Cc: Borislav Petkov <bp@alien8.de> Cc: Brian Cain <bcain@codeaurora.org> Cc: Catalin Marinas <catalin.marinas@arm.com> Cc: Chris Zankel <chris@zankel.net> Cc: "David S. Miller" <davem@davemloft.net> Cc: Geert Uytterhoeven <geert@linux-m68k.org> Cc: Greentime Hu <green.hu@gmail.com> Cc: Greg Ungerer <gerg@linux-m68k.org> Cc: Guan Xuetao <gxt@pku.edu.cn> Cc: Guo Ren <guoren@kernel.org> Cc: Heiko Carstens <heiko.carstens@de.ibm.com> Cc: Helge Deller <deller@gmx.de> Cc: Ingo Molnar <mingo@redhat.com> Cc: Ley Foon Tan <ley.foon.tan@intel.com> Cc: Mark Salter <msalter@redhat.com> Cc: Matthew Wilcox <willy@infradead.org> Cc: Matt Turner <mattst88@gmail.com> Cc: Max Filippov <jcmvbkbc@gmail.com> Cc: Michael Ellerman <mpe@ellerman.id.au> Cc: Michal Simek <monstr@monstr.eu> Cc: Nick Hu <nickhu@andestech.com> Cc: Paul Walmsley <paul.walmsley@sifive.com> Cc: Richard Weinberger <richard@nod.at> Cc: Rich Felker <dalias@libc.org> Cc: Russell King <linux@armlinux.org.uk> Cc: Stafford Horne <shorne@gmail.com> Cc: Thomas Bogendoerfer <tsbogend@alpha.franken.de> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Tony Luck <tony.luck@intel.com> Cc: Vincent Chen <deanbo422@gmail.com> Cc: Vineet Gupta <vgupta@synopsys.com> Cc: Will Deacon <will@kernel.org> Cc: Yoshinori Sato <ysato@users.sourceforge.jp> Link: http://lkml.kernel.org/r/20200514170327.31389-9-rppt@kernel.org Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'arch/arc')
-rw-r--r--arch/arc/mm/highmem.c10
1 files changed, 1 insertions, 9 deletions
diff --git a/arch/arc/mm/highmem.c b/arch/arc/mm/highmem.c
index d6b74883fd1f..1b9f473c6369 100644
--- a/arch/arc/mm/highmem.c
+++ b/arch/arc/mm/highmem.c
@@ -92,17 +92,9 @@ EXPORT_SYMBOL(kunmap_atomic_high);
static noinline pte_t * __init alloc_kmap_pgtable(unsigned long kvaddr)
{
- pgd_t *pgd_k;
- p4d_t *p4d_k;
- pud_t *pud_k;
- pmd_t *pmd_k;
+ pmd_t *pmd_k = pmd_off_k(kvaddr);
pte_t *pte_k;
- pgd_k = pgd_offset_k(kvaddr);
- p4d_k = p4d_offset(pgd_k, kvaddr);
- pud_k = pud_offset(p4d_k, kvaddr);
- pmd_k = pmd_offset(pud_k, kvaddr);
-
pte_k = (pte_t *)memblock_alloc_low(PAGE_SIZE, PAGE_SIZE);
if (!pte_k)
panic("%s: Failed to allocate %lu bytes align=0x%lx\n",