arm64: memory: Fix virt_addr_valid() using __is_lm_address()

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virt_addr_valid() is intended to test whether or not the passed address
is a valid linear map address. Unfortunately, it relies on
_virt_addr_is_linear() which is broken because it assumes the linear
map is at the top of the address space, which it no longer is.

Reimplement virt_addr_valid() using __is_lm_address() and remove
_virt_addr_is_linear() entirely. At the same time, ensure we evaluate
the macro parameter only once and move it within the __ASSEMBLY__ block.

Reported-by: Qian Cai <cai@lca.pw>
Reported-by: Geert Uytterhoeven <geert@linux-m68k.org>
Tested-by: Steve Capper <steve.capper@arm.com>
Reviewed-by: Steve Capper <steve.capper@arm.com>
Tested-by: Geert Uytterhoeven <geert+renesas@glider.be>
Reviewed-by: Catalin Marinas <catalin.marinas@arm.com>
Reviewed-by: Mark Rutland <mark.rutland@arm.com>
Fixes: 14c127c957 ("arm64: mm: Flip kernel VA space")
Signed-off-by: Will Deacon <will@kernel.org>

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This commit is contained in:

Will Deacon 2019-08-13 15:52:23 +01:00

parent d2d73d2fef

commit 68dd8ef321

1 changed files with 8 additions and 8 deletions

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arch/arm64/include/asm/memory.h

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