diff options
| author | Konrad Rzeszutek Wilk <konrad@darnok.org> | 2012-05-31 00:23:56 +0200 |
|---|---|---|
| committer | H. Peter Anvin <hpa@zytor.com> | 2012-05-31 01:15:02 +0200 |
| commit | 1ab46fd319bcf1fcd9fb6311727d532b580e4eba (patch) | |
| tree | cf4b901b70c69e317c43e539a51256ae32d0d0b4 /arch | |
| parent | x86, mtrr: Fix a type overflow in range_to_mtrr func (diff) | |
| download | linux-1ab46fd319bcf1fcd9fb6311727d532b580e4eba.tar.xz linux-1ab46fd319bcf1fcd9fb6311727d532b580e4eba.zip | |
x86, amd, xen: Avoid NULL pointer paravirt references
Stub out MSR methods that aren't actually needed. This fixes a crash
as Xen Dom0 on AMD Trinity systems. A bigger patch should be added to
remove the paravirt machinery completely for the methods which
apparently have no users!
Reported-by: Andre Przywara <andre.przywara@amd.com>
Link: http://lkml.kernel.org/r/20120530222356.GA28417@andromeda.dapyr.net
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
Cc: <stable@vger.kernel.org>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/x86/xen/enlighten.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/arch/x86/xen/enlighten.c b/arch/x86/xen/enlighten.c index 75f33b2a5933..e74df9548a02 100644 --- a/arch/x86/xen/enlighten.c +++ b/arch/x86/xen/enlighten.c @@ -1116,7 +1116,10 @@ static const struct pv_cpu_ops xen_cpu_ops __initconst = { .wbinvd = native_wbinvd, .read_msr = native_read_msr_safe, + .rdmsr_regs = native_rdmsr_safe_regs, .write_msr = xen_write_msr_safe, + .wrmsr_regs = native_wrmsr_safe_regs, + .read_tsc = native_read_tsc, .read_pmc = native_read_pmc, |