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Date: Sun, 16 Aug 2020 19:09:03 +1000 From: Nicholas Piggin <npiggin@...il.com> To: linux-mm@...ck.org Cc: Nicholas Piggin <npiggin@...il.com>, linux-kernel@...r.kernel.org, linux-arch@...r.kernel.org, linuxppc-dev@...ts.ozlabs.org, Catalin Marinas <catalin.marinas@....com>, Will Deacon <will@...nel.org>, linux-arm-kernel@...ts.infradead.org, Thomas Gleixner <tglx@...utronix.de>, Ingo Molnar <mingo@...hat.com>, Borislav Petkov <bp@...en8.de>, x86@...nel.org, "H. Peter Anvin" <hpa@...or.com>, Zefan Li <lizefan@...wei.com>, Jonathan Cameron <Jonathan.Cameron@...wei.com> Subject: [PATCH v4 7/8] 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 | 17 +++++++++++++---- 1 file changed, 13 insertions(+), 4 deletions(-) diff --git a/mm/vmalloc.c b/mm/vmalloc.c index 129f10545bb1..4e5cb7c7f780 100644 --- a/mm/vmalloc.c +++ b/mm/vmalloc.c @@ -234,8 +234,8 @@ 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, phys_addr_t phys_addr, pgprot_t prot, - unsigned int max_page_shift) +static int vmap_range_noflush(unsigned long addr, unsigned long end, phys_addr_t phys_addr, + pgprot_t prot, unsigned int max_page_shift) { pgd_t *pgd; unsigned long start; @@ -255,14 +255,23 @@ int vmap_range(unsigned long addr, unsigned long end, phys_addr_t phys_addr, pgp 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
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