Re: [PATCH v3 08/11] x86/mm: Disable PCID on 32-bit kernels

2017-06-23 Thread Borislav Petkov
On Tue, Jun 20, 2017 at 10:22:14PM -0700, Andy Lutomirski wrote: > 32-bit kernels on new hardware will see PCID in CPUID, but PCID can > only be used in 64-bit mode. Rather than making all PCID code > conditional, just disable the feature on 32-bit builds. > > Signed-off-by: Andy Lutomirski > --

Re: [PATCH v3 08/11] x86/mm: Disable PCID on 32-bit kernels

2017-06-21 Thread Thomas Gleixner
On Tue, 20 Jun 2017, Andy Lutomirski wrote: > 32-bit kernels on new hardware will see PCID in CPUID, but PCID can > only be used in 64-bit mode. Rather than making all PCID code > conditional, just disable the feature on 32-bit builds. > > Signed-off-by: Andy Lutomirski Reviewed-by: Thomas Glei

[PATCH v3 08/11] x86/mm: Disable PCID on 32-bit kernels

2017-06-20 Thread Andy Lutomirski
32-bit kernels on new hardware will see PCID in CPUID, but PCID can only be used in 64-bit mode. Rather than making all PCID code conditional, just disable the feature on 32-bit builds. Signed-off-by: Andy Lutomirski --- arch/x86/include/asm/disabled-features.h | 4 +++- arch/x86/kernel/cpu/bug