s390/pci: enforce fmb page boundary rule

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commit 80c544ded2 upstream.

The function measurement block must not cross a page boundary. Ensure
that by raising the alignment requirement to the smallest power of 2
larger than the size of the fmb.

Fixes: d0b088531 ("s390/pci: performance statistics and debug infrastructure")
Signed-off-by: Sebastian Ott <sebott@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

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Sebastian Ott 2016-03-14 15:47:23 +01:00 • committed by Greg Kroah-Hartman

parent c024dcd3df

commit c1948606af

2 changed files with 5 additions and 2 deletions

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2

arch/s390/include/asm/pci.h

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5

arch/s390/pci/pci.c

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