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authorRobert Richter <rrichter@cavium.com>2015-09-21 23:58:34 +0300
committerThomas Gleixner <tglx@linutronix.de>2015-09-29 11:10:53 +0300
commit30f2136346cab91e1ffd9ee6370d76809f20487a (patch)
tree53e977c14eb43b1d5465a9838b441e48325d6100 /include/linux/irqchip
parent71f64340fc0eadd06036d0db9a511b6d726add1d (diff)
downloadlinux-30f2136346cab91e1ffd9ee6370d76809f20487a.tar.xz
irqchip/gicv3-its: Add range check for number of allocated pages
The number of pages for the its table may exceed the maximum of 256. Adding a range check and limitting the number to its maximum. Based on a patch from Tirumalesh Chalamarla <tchalamarla@cavium.com>. Signed-off-by: Tirumalesh Chalamarla <tchalamarla@cavium.com> Signed-off-by: Robert Richter <rrichter@cavium.com> Reviewed-by: Marc Zyngier <marc.zyngier@arm.com> Acked-by: Catalin Marinas <catalin.marinas@arm.com> Cc: linux-arm-kernel@lists.infradead.org Cc: Jason Cooper <jason@lakedaemon.net> Link: http://lkml.kernel.org/r/1442869119-1814-2-git-send-email-rric@kernel.org Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Diffstat (limited to 'include/linux/irqchip')
-rw-r--r--include/linux/irqchip/arm-gic-v3.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/include/linux/irqchip/arm-gic-v3.h b/include/linux/irqchip/arm-gic-v3.h
index 9eeeb9589acf..c0c8a2ef9d90 100644
--- a/include/linux/irqchip/arm-gic-v3.h
+++ b/include/linux/irqchip/arm-gic-v3.h
@@ -231,6 +231,7 @@
#define GITS_BASER_PAGE_SIZE_16K (1UL << GITS_BASER_PAGE_SIZE_SHIFT)
#define GITS_BASER_PAGE_SIZE_64K (2UL << GITS_BASER_PAGE_SIZE_SHIFT)
#define GITS_BASER_PAGE_SIZE_MASK (3UL << GITS_BASER_PAGE_SIZE_SHIFT)
+#define GITS_BASER_PAGES_MAX 256
#define GITS_BASER_TYPE_NONE 0
#define GITS_BASER_TYPE_DEVICE 1