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| author | Stefano Stabellini <Stefano.Stabellini@eu.citrix.com> | 2012-10-03 18:08:52 +0100 |
|---|---|---|
| committer | Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> | 2012-10-03 13:03:32 -0400 |
| commit | 4ed5978bdd99114db7773cb3d78f2998bd17f694 (patch) | |
| tree | 7d4cf90f362dfcda4fc7fbc7fca3baec433b1eb7 /include/xen/xen.h | |
| parent | 2e3d88602814e5fd5b88d5c73be3305060c473b6 (diff) | |
| download | linux-4ed5978bdd99114db7773cb3d78f2998bd17f694.tar.gz linux-4ed5978bdd99114db7773cb3d78f2998bd17f694.tar.bz2 linux-4ed5978bdd99114db7773cb3d78f2998bd17f694.zip | |
xen/xen_initial_domain: check that xen_start_info is initialized
Since commit commit 4c071ee5268f7234c3d084b6093bebccc28cdcba ("arm:
initial Xen support") PV on HVM guests can be xen_initial_domain.
However PV on HVM guests might have an unitialized xen_start_info, so
check before accessing its fields.
Signed-off-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
Acked-by: Ian Campbell <Ian.Campbell@citrix.com>
Reported-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Diffstat (limited to 'include/xen/xen.h')
| -rw-r--r-- | include/xen/xen.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/include/xen/xen.h b/include/xen/xen.h index 2c0d3a56c749..a74d4362c4f8 100644 --- a/include/xen/xen.h +++ b/include/xen/xen.h @@ -24,7 +24,7 @@ extern enum xen_domain_type xen_domain_type; #include <asm/xen/hypervisor.h> #define xen_initial_domain() (xen_domain() && \ - xen_start_info->flags & SIF_INITDOMAIN) + xen_start_info && xen_start_info->flags & SIF_INITDOMAIN) #else /* !CONFIG_XEN_DOM0 */ #define xen_initial_domain() (0) #endif /* CONFIG_XEN_DOM0 */ |