arm64: set MAX_MEMBLOCK_ADDR according to linear region size

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commit 34ba2c4247 upstream.

The linear region size of a 39-bit VA kernel is only 256 GB, which
may be insufficient to cover all of system RAM, even on platforms
that have much less than 256 GB of memory but which is laid out
very sparsely.

So make sure we clip the memory we will not be able to map before
installing it into the memblock memory table, by setting
MAX_MEMBLOCK_ADDR accordingly.

Reviewed-by: Catalin Marinas <catalin.marinas@arm.com>
Tested-by: Stuart Yoder <stuart.yoder@freescale.com>
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Signed-off-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

...

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Ard Biesheuvel 2015-08-18 10:34:42 +01:00 • committed by Greg Kroah-Hartman

parent 01cb08b46f

commit fe6b3cafd6

1 changed files with 8 additions and 0 deletions

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arch/arm64/include/asm/memory.h

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