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| author | Konrad Rzeszutek Wilk <konrad@darnok.org> | 2012-05-30 18:23:56 -0400 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2012-06-10 00:36:09 +0900 |
| commit | 2b06dfb55b78e57734a696324ce7d593b1c084be (patch) | |
| tree | 5f5742a6bac56b5971263fd0d4c7b2ffc97b3bea /arch | |
| parent | c163f56463e26f771e3dc7e67921f268053ad8e6 (diff) | |
| download | linux-3.10-2b06dfb55b78e57734a696324ce7d593b1c084be.tar.gz linux-3.10-2b06dfb55b78e57734a696324ce7d593b1c084be.tar.bz2 linux-3.10-2b06dfb55b78e57734a696324ce7d593b1c084be.zip | |
x86, amd, xen: Avoid NULL pointer paravirt references
commit 1ab46fd319bcf1fcd9fb6311727d532b580e4eba upstream.
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>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.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 95dccce8e97..6c7f1e8a312 100644 --- a/arch/x86/xen/enlighten.c +++ b/arch/x86/xen/enlighten.c @@ -1106,7 +1106,10 @@ 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, |