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Message-Id: <20120607040339.446198849@linuxfoundation.org> Date: Thu, 07 Jun 2012 13:03:57 +0900 From: Greg KH <gregkh@...uxfoundation.org> To: linux-kernel@...r.kernel.org, stable@...r.kernel.org Cc: torvalds@...ux-foundation.org, akpm@...ux-foundation.org, alan@...rguk.ukuu.org.uk, Andre Przywara <andre.przywara@....com>, "H. Peter Anvin" <hpa@...or.com> Subject: [ 21/82] x86, amd, xen: Avoid NULL pointer paravirt references 3.4-stable review patch. If anyone has any objections, please let me know. ------------------ From: Konrad Rzeszutek Wilk <konrad@...nok.org> 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@....com> Link: http://lkml.kernel.org/r/20120530222356.GA28417@andromeda.dapyr.net Signed-off-by: H. Peter Anvin <hpa@...or.com> Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org> --- arch/x86/xen/enlighten.c | 3 +++ 1 file changed, 3 insertions(+) --- a/arch/x86/xen/enlighten.c +++ b/arch/x86/xen/enlighten.c @@ -1106,7 +1106,10 @@ static const struct pv_cpu_ops xen_cpu_o .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, -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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