Re: [PATCH 7/7] x86/mce: Clear Local MCE opt-in before kexec

2015-07-16 Thread Raj, Ashok
On Thu, Jul 16, 2015 at 06:16:50PM -0700, Andy Lutomirski wrote: > > From: Ashok Raj > > > > kexec could boot a kernel that could be legacy with no knowledge of > > LMCE. Hence we should make sure we clear LMCE optin before kexec reboot. > > > > What happens if an offline-but-not-unplugged CPU

Re: [PATCH 7/7] x86/mce: Clear Local MCE opt-in before kexec

2015-07-16 Thread Andy Lutomirski
On Thu, Jul 16, 2015 at 12:44 AM, Borislav Petkov wrote: > From: Ashok Raj > > kexec could boot a kernel that could be legacy with no knowledge of > LMCE. Hence we should make sure we clear LMCE optin before kexec reboot. > What happens if an offline-but-not-unplugged CPU gets an MCE? Or does

[PATCH 7/7] x86/mce: Clear Local MCE opt-in before kexec

2015-07-16 Thread Borislav Petkov
From: Ashok Raj kexec could boot a kernel that could be legacy with no knowledge of LMCE. Hence we should make sure we clear LMCE optin before kexec reboot. Signed-off-by: Ashok Raj Cc: Andy Lutomirski Cc: Aravind Gopalakrishnan Cc: Oleg Nesterov Cc: Tony Luck Cc: linux-edac Cc: x86-ml

[PATCH 7/7] x86/mce: Clear Local MCE opt-in before kexec

2015-07-16 Thread Borislav Petkov
From: Ashok Raj ashok@intel.com kexec could boot a kernel that could be legacy with no knowledge of LMCE. Hence we should make sure we clear LMCE optin before kexec reboot. Signed-off-by: Ashok Raj ashok@intel.com Cc: Andy Lutomirski l...@amacapital.net Cc: Aravind Gopalakrishnan

Re: [PATCH 7/7] x86/mce: Clear Local MCE opt-in before kexec

2015-07-16 Thread Raj, Ashok
On Thu, Jul 16, 2015 at 06:16:50PM -0700, Andy Lutomirski wrote: From: Ashok Raj ashok@intel.com kexec could boot a kernel that could be legacy with no knowledge of LMCE. Hence we should make sure we clear LMCE optin before kexec reboot. What happens if an

Re: [PATCH 7/7] x86/mce: Clear Local MCE opt-in before kexec

2015-07-16 Thread Andy Lutomirski
On Thu, Jul 16, 2015 at 12:44 AM, Borislav Petkov b...@suse.de wrote: From: Ashok Raj ashok@intel.com kexec could boot a kernel that could be legacy with no knowledge of LMCE. Hence we should make sure we clear LMCE optin before kexec reboot. What happens if an offline-but-not-unplugged