Re: [Xen-devel] [PATCH 1/9] x86/spec-ctrl: Drop the bti= command line option

2018-12-04 Thread Jan Beulich
>>> On 03.12.18 at 17:18, wrote: > bti= was introduced with the original Spectre fixes (Jan 2018), but by the > time Speculative Store Bypass came along (May 2018), it was superceeded by the > more generic spec-ctrl=. > > Since then, we've had LazyFPU (June 2018) and L1TF (August 2018), which mea

[Xen-devel] [PATCH 1/9] x86/spec-ctrl: Drop the bti= command line option

2018-12-03 Thread Andrew Cooper
bti= was introduced with the original Spectre fixes (Jan 2018), but by the time Speculative Store Bypass came along (May 2018), it was superceeded by the more generic spec-ctrl=. Since then, we've had LazyFPU (June 2018) and L1TF (August 2018), which means noone will be using the option. Remove i