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| author | Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> | 2012-10-10 13:30:47 -0400 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2012-10-21 09:27:59 -0700 |
| commit | e299f8abb241b52fe0de458143a537ac91b269a2 (patch) | |
| tree | 107d402b7fe0175f6a6a270fe69cd47cfe5dad1d | |
| parent | c525d8ee0c7701d72d8144f536d47a5bd30159e9 (diff) | |
| download | lwn-e299f8abb241b52fe0de458143a537ac91b269a2.tar.gz lwn-e299f8abb241b52fe0de458143a537ac91b269a2.zip | |
xen/bootup: allow read_tscp call for Xen PV guests.
commit cd0608e71e9757f4dae35bcfb4e88f4d1a03a8ab upstream.
The hypervisor will trap it. However without this patch,
we would crash as the .read_tscp is set to NULL. This patch
fixes it and sets it to the native_read_tscp call.
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | arch/x86/xen/enlighten.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/arch/x86/xen/enlighten.c b/arch/x86/xen/enlighten.c index 5fa38a80000c..59100548cbdb 100644 --- a/arch/x86/xen/enlighten.c +++ b/arch/x86/xen/enlighten.c @@ -1135,6 +1135,8 @@ static const struct pv_cpu_ops xen_cpu_ops __initconst = { .read_tsc = native_read_tsc, .read_pmc = native_read_pmc, + .read_tscp = native_read_tscp, + .iret = xen_iret, .irq_enable_sysexit = xen_sysexit, #ifdef CONFIG_X86_64 |