x86, ds: allow small debug store buffers

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Check the buffer size more precisely to allow buffers for exactly
one element provided the base address is already properly aligned.

Add a debug store selftest.

Reported-by: Stephane Eranian <eranian@googlemail.com>
Signed-off-by: Markus Metzger <markus.t.metzger@intel.com>
Cc: roland@redhat.com
Cc: eranian@googlemail.com
Cc: oleg@redhat.com
Cc: juan.villacis@intel.com
Cc: ak@linux.jf.intel.com
LKML-Reference: <20090403144606.139137000@intel.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

...

This commit is contained in:

Markus Metzger 2009-04-03 16:43:51 +02:00 • committed by Ingo Molnar

parent 608780a904

commit 150f5164c1

2 changed files with 10 additions and 5 deletions

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9

arch/x86/kernel/ds.c

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6

arch/x86/kernel/ds_selftest.c

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