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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: 14c127c957
("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>
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@ -400,7 +400,7 @@ void ptdump_check_wx(void)
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.check_wx = true,
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};
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walk_pgd(&st, &init_mm, VA_START);
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walk_pgd(&st, &init_mm, PAGE_OFFSET);
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note_page(&st, 0, 0, 0);
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if (st.wx_pages || st.uxn_pages)
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pr_warn("Checked W+X mappings: FAILED, %lu W+X pages found, %lu non-UXN pages found\n",
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@ -109,7 +109,7 @@ static inline bool is_ttbr0_addr(unsigned long addr)
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static inline bool is_ttbr1_addr(unsigned long addr)
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{
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/* TTBR1 addresses may have a tag if KASAN_SW_TAGS is in use */
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return arch_kasan_reset_tag(addr) >= VA_START;
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return arch_kasan_reset_tag(addr) >= PAGE_OFFSET;
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}
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/*
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