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| author | Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> | 2012-10-10 13:30:47 -0400 |
|---|---|---|
| committer | Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> | 2012-10-12 08:48:58 -0400 |
| commit | cd0608e71e9757f4dae35bcfb4e88f4d1a03a8ab (patch) | |
| tree | cb355f8337a3daab7f6109abe69966de68a1a9f8 | |
| parent | 34b6f01a79bd65fbd06511d2cb7b28e33a506246 (diff) | |
| download | lwn-cd0608e71e9757f4dae35bcfb4e88f4d1a03a8ab.tar.gz lwn-cd0608e71e9757f4dae35bcfb4e88f4d1a03a8ab.zip | |
xen/bootup: allow read_tscp call for Xen PV guests.
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.
CC: stable@vger.kernel.org
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
| -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 70f140447a28..668bbfee0cce 100644 --- a/arch/x86/xen/enlighten.c +++ b/arch/x86/xen/enlighten.c @@ -1164,6 +1164,8 @@ 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 |