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authorJuergen Gross <jgross@suse.com>2015-01-12 06:05:10 +0100
committerDavid Vrabel <david.vrabel@citrix.com>2015-01-12 10:09:55 +0000
commit9a17ad7f3db17db0c6375de96672f16ab1aa51ae (patch)
tree054864393127a9d5fae232fc2ee046eb0e824b39 /arch
parente86f949667127509d95b6c678fdd928b93128d9d (diff)
downloadlinux-9a17ad7f3db17db0c6375de96672f16ab1aa51ae.tar.bz2
xen: check for zero sized area when invalidating memory
With the introduction of the linear mapped p2m list setting memory areas to "invalid" had to be delayed. When doing the invalidation make sure no zero sized areas are processed. Signed-off-by: Juegren Gross <jgross@suse.com> Signed-off-by: David Vrabel <david.vrabel@citrix.com>
Diffstat (limited to 'arch')
-rw-r--r--arch/x86/xen/setup.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/arch/x86/xen/setup.c b/arch/x86/xen/setup.c
index 410210f279bf..865e56cea7a0 100644
--- a/arch/x86/xen/setup.c
+++ b/arch/x86/xen/setup.c
@@ -160,6 +160,8 @@ void __init xen_inv_extra_mem(void)
int i;
for (i = 0; i < XEN_EXTRA_MEM_MAX_REGIONS; i++) {
+ if (!xen_extra_mem[i].size)
+ continue;
pfn_s = PFN_DOWN(xen_extra_mem[i].start);
pfn_e = PFN_UP(xen_extra_mem[i].start + xen_extra_mem[i].size);
for (pfn = pfn_s; pfn < pfn_e; pfn++)