Re: [V6.1 PATCH 5/6] x86/nmi: Fix to save registers for crash dump on external NMI broadcast

2015-12-11 Thread Borislav Petkov
On Thu, Dec 10, 2015 at 03:52:46PM +0900, Hidehiro Kawai wrote: > Now, multiple CPUs can receive external NMI simultaneously by > specifying "apic_extnmi=all" as an boot option. When we take a > crash dump by using external NMI with this option, we fail to save > register values into the crash

Re: [V6.1 PATCH 5/6] x86/nmi: Fix to save registers for crash dump on external NMI broadcast

2015-12-11 Thread Borislav Petkov
On Thu, Dec 10, 2015 at 03:52:46PM +0900, Hidehiro Kawai wrote: > Now, multiple CPUs can receive external NMI simultaneously by > specifying "apic_extnmi=all" as an boot option. When we take a > crash dump by using external NMI with this option, we fail to save > register values into the crash

[V6.1 PATCH 5/6] x86/nmi: Fix to save registers for crash dump on external NMI broadcast

2015-12-09 Thread Hidehiro Kawai
Now, multiple CPUs can receive external NMI simultaneously by specifying "apic_extnmi=all" as an boot option. When we take a crash dump by using external NMI with this option, we fail to save register values into the crash dump. This happens as follows: CPU 0 CPU

[V6.1 PATCH 5/6] x86/nmi: Fix to save registers for crash dump on external NMI broadcast

2015-12-09 Thread Hidehiro Kawai
Now, multiple CPUs can receive external NMI simultaneously by specifying "apic_extnmi=all" as an boot option. When we take a crash dump by using external NMI with this option, we fail to save register values into the crash dump. This happens as follows: CPU 0 CPU