lists.openwall.net | lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC | |
Open Source and information security mailing list archives
| ||
|
Date: Wed, 26 Aug 2020 00:57:51 +1000 From: Nicholas Piggin <npiggin@...il.com> To: linux-mm@...ck.org, Andrew Morton <akpm@...ux-foundation.org> Cc: Nicholas Piggin <npiggin@...il.com>, linux-kernel@...r.kernel.org, linux-arch@...r.kernel.org, linuxppc-dev@...ts.ozlabs.org, Zefan Li <lizefan@...wei.com>, Jonathan Cameron <Jonathan.Cameron@...wei.com>, Christoph Hellwig <hch@...radead.org>, Christophe Leroy <christophe.leroy@...roup.eu> Subject: [PATCH v7 10/12] mm/vmalloc: add vmap_range_noflush variant As a side-effect, the order of flush_cache_vmap() and arch_sync_kernel_mappings() calls are switched, but that now matches the other callers in this file. Signed-off-by: Nicholas Piggin <npiggin@...il.com> --- mm/vmalloc.c | 16 +++++++++++++--- 1 file changed, 13 insertions(+), 3 deletions(-) diff --git a/mm/vmalloc.c b/mm/vmalloc.c index 256554d598e6..1d6cad16bda3 100644 --- a/mm/vmalloc.c +++ b/mm/vmalloc.c @@ -237,7 +237,7 @@ static int vmap_p4d_range(pgd_t *pgd, unsigned long addr, unsigned long end, return 0; } -int vmap_range(unsigned long addr, unsigned long end, +static int vmap_range_noflush(unsigned long addr, unsigned long end, phys_addr_t phys_addr, pgprot_t prot, unsigned int max_page_shift) { @@ -259,14 +259,24 @@ int vmap_range(unsigned long addr, unsigned long end, break; } while (pgd++, phys_addr += (next - addr), addr = next, addr != end); - flush_cache_vmap(start, end); - if (mask & ARCH_PAGE_TABLE_SYNC_MASK) arch_sync_kernel_mappings(start, end); return err; } +int vmap_range(unsigned long addr, unsigned long end, + phys_addr_t phys_addr, pgprot_t prot, + unsigned int max_page_shift) +{ + int err; + + err = vmap_range_noflush(addr, end, phys_addr, prot, max_page_shift); + flush_cache_vmap(addr, end); + + return err; +} + static void vunmap_pte_range(pmd_t *pmd, unsigned long addr, unsigned long end, pgtbl_mod_mask *mask) { -- 2.23.0
Powered by blists - more mailing lists