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| author | Mark Rutland <mark.rutland@arm.com> | 2019-08-14 14:28:47 +0100 |
|---|---|---|
| committer | Will Deacon <will@kernel.org> | 2019-08-14 17:05:11 +0100 |
| commit | 233947ef16a18952d22786770dab1ddafa1ac377 (patch) | |
| tree | 5e2f60d645f057615a89e8bf9d236a543bc3d1ae /arch/arm64/mm | |
| parent | d0b3c32ed9220616548ff63808751cf2f6608df1 (diff) | |
| download | linux-stable-233947ef16a18952d22786770dab1ddafa1ac377.tar.gz linux-stable-233947ef16a18952d22786770dab1ddafa1ac377.tar.bz2 linux-stable-233947ef16a18952d22786770dab1ddafa1ac377.zip | |
arm64: memory: fix flipped VA space fallout
VA_START used to be the start of the TTBR1 address space, but now it's a
point midway though. In a couple of places we still use VA_START to get
the start of the TTBR1 address space, so let's fix these up to use
PAGE_OFFSET instead.
Fixes: 14c127c957c1c607 ("arm64: mm: Flip kernel VA space")
Signed-off-by: Mark Rutland <mark.rutland@arm.com>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Tested-by: Steve Capper <steve.capper@arm.com>
Reviewed-by: Steve Capper <steve.capper@arm.com>
Signed-off-by: Will Deacon <will@kernel.org>
Diffstat (limited to 'arch/arm64/mm')
| -rw-r--r-- | arch/arm64/mm/dump.c | 2 | ||||
| -rw-r--r-- | arch/arm64/mm/fault.c | 2 |
2 files changed, 2 insertions, 2 deletions
diff --git a/arch/arm64/mm/dump.c b/arch/arm64/mm/dump.c index 6ec75305828e..8e10b4ba215a 100644 --- a/arch/arm64/mm/dump.c +++ b/arch/arm64/mm/dump.c @@ -400,7 +400,7 @@ void ptdump_check_wx(void) .check_wx = true, }; - walk_pgd(&st, &init_mm, VA_START); + walk_pgd(&st, &init_mm, PAGE_OFFSET); note_page(&st, 0, 0, 0); if (st.wx_pages || st.uxn_pages) pr_warn("Checked W+X mappings: FAILED, %lu W+X pages found, %lu non-UXN pages found\n", diff --git a/arch/arm64/mm/fault.c b/arch/arm64/mm/fault.c index 75eff57bd9ef..bb4e4f3fffd8 100644 --- a/arch/arm64/mm/fault.c +++ b/arch/arm64/mm/fault.c @@ -109,7 +109,7 @@ static inline bool is_ttbr0_addr(unsigned long addr) static inline bool is_ttbr1_addr(unsigned long addr) { /* TTBR1 addresses may have a tag if KASAN_SW_TAGS is in use */ - return arch_kasan_reset_tag(addr) >= VA_START; + return arch_kasan_reset_tag(addr) >= PAGE_OFFSET; } /* |