On error mmap returns MAP_FAILED so we
need a proper test here.
Signed-off-by: Cyrill Gorcunov <[email protected]>
---
tools/kvm/hw/pci-shmem.c | 5 +++--
1 file changed, 3 insertions(+), 2 deletions(-)
Index: linux-2.6.git/tools/kvm/hw/pci-shmem.c
===================================================================
--- linux-2.6.git.orig/tools/kvm/hw/pci-shmem.c
+++ linux-2.6.git/tools/kvm/hw/pci-shmem.c
@@ -209,7 +209,7 @@ static void *setup_shmem(const char *key
PROT_READ | PROT_WRITE, MAP_SHARED | MAP_NORESERVE, fd, 0);
close(fd);
- if (mem == NULL)
+ if (mem == MAP_FAILED)
pr_warning("Failed to mmap shared memory file");
return mem;
@@ -259,8 +259,9 @@ int pci_shmem__init(struct kvm *kvm)
/* Open shared memory and plug it into the guest */
mem = setup_shmem(shmem_region->handle, shmem_region->size,
shmem_region->create);
- if (mem == NULL)
+ if (mem == MAP_FAILED)
return 0;
+
kvm__register_mem(kvm, shmem_region->phys_addr, shmem_region->size,
mem);
return 1;
--
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