On Thu, Jun 11, 2020 at 01:37:19PM -0400, Prarit Bhargava wrote:
>
>
> On 6/8/20 1:15 PM, Sean Christopherson wrote:
> > On Mon, Jun 08, 2020 at 08:21:14AM -0400, Prarit Bhargava wrote:
> >> diff --git a/arch/x86/kernel/cpu/intel.c b/arch/x86/kernel/cpu/intel.c
> >> index 166d7c355896..e02ec81fe1
On 6/8/20 1:15 PM, Sean Christopherson wrote:
> On Mon, Jun 08, 2020 at 08:21:14AM -0400, Prarit Bhargava wrote:
>> diff --git a/arch/x86/kernel/cpu/intel.c b/arch/x86/kernel/cpu/intel.c
>> index 166d7c355896..e02ec81fe1eb 100644
>> --- a/arch/x86/kernel/cpu/intel.c
>> +++ b/arch/x86/kernel/cpu/
On 6/8/20 1:15 PM, Sean Christopherson wrote:
> On Mon, Jun 08, 2020 at 08:21:14AM -0400, Prarit Bhargava wrote:
>> diff --git a/arch/x86/kernel/cpu/intel.c b/arch/x86/kernel/cpu/intel.c
>> index 166d7c355896..e02ec81fe1eb 100644
>> --- a/arch/x86/kernel/cpu/intel.c
>> +++ b/arch/x86/kernel/cpu/
On Mon, Jun 08, 2020 at 08:21:14AM -0400, Prarit Bhargava wrote:
> diff --git a/arch/x86/kernel/cpu/intel.c b/arch/x86/kernel/cpu/intel.c
> index 166d7c355896..e02ec81fe1eb 100644
> --- a/arch/x86/kernel/cpu/intel.c
> +++ b/arch/x86/kernel/cpu/intel.c
> @@ -1074,10 +1074,17 @@ static void split_loc
There are two problems with kernel messages in fatal mode that
were found during testing of guests and userspace programs.
The first is that no kernel message is output when the split lock detector
is triggered with a userspace program. As a result the userspace process
dies from receiving SIGBUS
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