Miles Chen eea1bb2248 arm64: mm: check virtual addr in virt_to_page() if CONFIG_DEBUG_VIRTUAL=y ... This change uses the original virt_to_page() (the one with __pa()) to check the given virtual address if CONFIG_DEBUG_VIRTUAL=y. Recently, I worked on a bug: a driver passes a symbol address to dma_map_single() and the virt_to_page() (called by dma_map_single()) does not work for non-linear addresses after commit 9f2875912d ("arm64: mm: restrict virt_to_page() to the linear mapping"). I tried to trap the bug by enabling CONFIG_DEBUG_VIRTUAL but it did not work - bacause the commit removes the __pa() from virt_to_page() but CONFIG_DEBUG_VIRTUAL checks the virtual address in __pa()/__virt_to_phys(). A simple solution is to use the original virt_to_page() (the one with__pa()) if CONFIG_DEBUG_VIRTUAL=y. Cc: Ard Biesheuvel <ard.biesheuvel@linaro.org> Acked-by: Catalin Marinas <catalin.marinas@arm.com> Signed-off-by: Miles Chen <miles.chen@mediatek.com> Signed-off-by: Will Deacon <will.deacon@arm.com>		2019-04-16 16:27:59 +01:00
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asm	arm64: mm: check virtual addr in virt_to_page() if CONFIG_DEBUG_VIRTUAL=y	2019-04-16 16:27:59 +01:00
uapi/asm	arm64: Expose DC CVADP to userspace	2019-04-16 16:27:56 +01:00