From 4f3c473d51d1c05bb08fecedfcf257d1a667bc5c Mon Sep 17 00:00:00 2001 From: Stefano Stabellini Date: Wed, 17 Oct 2012 16:43:50 +0100 Subject: [PATCH] xen: change the limit of nr_extents to UINT_MAX >> MEMOP_EXTENT_SHIFT Currently do_memory_op has a different maximum limit for nr_extents on 32 bit and 64 bit. Change the limit to UINT_MAX >> MEMOP_EXTENT_SHIFT, so that it is the same in both cases. Signed-off-by: Stefano Stabellini Signed-off-by: Ian Campbell Acked-by: Keir Fraser Committed-by: Ian Campbell --- xen/common/memory.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/xen/common/memory.c b/xen/common/memory.c index 5bcb035086..401d06c7d6 100644 --- a/xen/common/memory.c +++ b/xen/common/memory.c @@ -540,7 +540,7 @@ long do_memory_op(unsigned long cmd, XEN_GUEST_HANDLE(void) arg) return start_extent; /* Is size too large for us to encode a continuation? */ - if ( reservation.nr_extents > (ULONG_MAX >> MEMOP_EXTENT_SHIFT) ) + if ( reservation.nr_extents > (UINT_MAX >> MEMOP_EXTENT_SHIFT) ) return start_extent; if ( unlikely(start_extent >= reservation.nr_extents) ) -- 2.30.2