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mirror of https://github.com/edk2-porting/linux-next.git synced 2024-12-19 18:53:52 +08:00
linux-next/arch/arm/include
Simon Baatz 1bc39742aa ARM: 7755/1: handle user space mapped pages in flush_kernel_dcache_page
Commit f8b63c1 made flush_kernel_dcache_page a no-op assuming that
the pages it needs to handle are kernel mapped only.  However, for
example when doing direct I/O, pages with user space mappings may
occur.

Thus, continue to do lazy flushing if there are no user space
mappings.  Otherwise, flush the kernel cache lines directly.

Signed-off-by: Simon Baatz <gmbnomis@gmail.com>
Reviewed-by: Catalin Marinas <catalin.marinas@arm.com>
Cc: <stable@vger.kernel.org> # 3.2+
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2013-06-17 10:30:52 +01:00
..
asm ARM: 7755/1: handle user space mapped pages in flush_kernel_dcache_page 2013-06-17 10:30:52 +01:00
debug ARM: ux500: Fix incorrect DEBUG UART virtual addresses 2013-05-14 10:26:45 +02:00
uapi/asm Merge branch 'kvm-arm-cleanup' from git://github.com/columbia/linux-kvm-arm.git 2013-04-25 18:23:48 +03:00