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parisc: use pgtable-nopXd instead of 4level-fixup

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parisc has two or three levels of page tables and can use appropriate
pgtable-nopXd and folding of the upper layers.

Replace usage of include/asm-generic/4level-fixup.h and explicit
definitions of __PAGETABLE_PxD_FOLDED in parisc with
include/asm-generic/pgtable-nopmd.h for two-level configurations and
with include/asm-generic/pgtable-nopud.h for three-lelve configurations
and adjust page table manipulation macros and functions accordingly.

Link: http://lkml.kernel.org/r/1572938135-31886-9-git-send-email-rppt@kernel.org
Signed-off-by: Mike Rapoport <rppt@linux.ibm.com>
Acked-by: Helge Deller <deller@gmx.de>
Cc: Anatoly Pugachev <matorola@gmail.com>
Cc: Anton Ivanov <anton.ivanov@cambridgegreys.com>
Cc: Arnd Bergmann <arnd@arndb.de>
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: "James E.J. Bottomley" <James.Bottomley@HansenPartnership.com>
Cc: Jeff Dike <jdike@addtoit.com>
Cc: "Kirill A. Shutemov" <kirill@shutemov.name>
Cc: Mark Salter <msalter@redhat.com>
Cc: Matt Turner <mattst88@gmail.com>
Cc: Michal Simek <monstr@monstr.eu>
Cc: Peter Rosin <peda@axentia.se>
Cc: Richard Weinberger <richard@nod.at>
Cc: Rolf Eike Beer <eike-kernel@sf-tec.de>
Cc: Russell King <linux@armlinux.org.uk>
Cc: Russell King <rmk+kernel@armlinux.org.uk>
Cc: Sam Creasey <sammy@sammy.net>
Cc: Vincent Chen <deanbo422@gmail.com>
Cc: Vineet Gupta <Vineet.Gupta1@synopsys.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Mike Rapoport
2019-12-04 16:54:12 -08:00
committed by Linus Torvalds
parent 7c2763c423
commit d96885e277
7 changed files with 81 additions and 76 deletions
Download Patch File Download Diff File Expand all files Collapse all files

13
arch/parisc/kernel/cache.c
View File

@@ -534,11 +534,14 @@ static inline pte_t *get_ptep(pgd_t *pgd, unsigned long addr)
pte_t *ptep = NULL;
if (!pgd_none(*pgd)) {
pud_t *pud = pud_offset(pgd, addr);
if (!pud_none(*pud)) {
pmd_t *pmd = pmd_offset(pud, addr);
if (!pmd_none(*pmd))
ptep = pte_offset_map(pmd, addr);
p4d_t *p4d = p4d_offset(pgd, addr);
if (!p4d_none(*p4d)) {
pud_t *pud = pud_offset(p4d, addr);
if (!pud_none(*pud)) {
pmd_t *pmd = pmd_offset(pud, addr);
if (!pmd_none(*pmd))
ptep = pte_offset_map(pmd, addr);
}
}
}
return ptep;

9
arch/parisc/kernel/pci-dma.c
View File

@@ -133,9 +133,14 @@ static inline int map_uncached_pages(unsigned long vaddr, unsigned long size,
dir = pgd_offset_k(vaddr);
do {
p4d_t *p4d;
pud_t *pud;
pmd_t *pmd;
pmd = pmd_alloc(NULL, dir, vaddr);
p4d = p4d_offset(dir, vaddr);
pud = pud_offset(p4d, vaddr);
pmd = pmd_alloc(NULL, pud, vaddr);
if (!pmd)
return -ENOMEM;
if (map_pmd_uncached(pmd, vaddr, end - vaddr, &paddr))