Re: [Xen-devel] [PATCH 3/3] x86/spec-ctrl: Add support for modifying SSBD AMD VIA LS_CFG MSR

["Jan Beulich" <JBeulich@xxxxxxxx>]

>>> On 08.08.18 at 18:43, <brian.woods@xxxxxxx> wrote:
> On Tue, Aug 07, 2018 at 01:51:07AM -0600, Jan Beulich wrote:
>> >>> On 06.08.18 at 21:07, <brian.woods@xxxxxxx> wrote:
>> > On Thu, Aug 02, 2018 at 01:09:06AM -0600, Jan Beulich wrote:
>> >> >>> On 02.08.18 at 00:20, <brian.woods@xxxxxxx> wrote:
>> >> > current_cpu_data isn't available when ssbd_amd_ls_cfg_init is called.
>> >> 
>> >> By "isn't available" you mean "hasn't been populated yet"? Else
>> >> I don't understand.
>> > 
>> > It hasn't been populated yet.
>> 
>> Not even boot_cpu_data?
> 
> boot_cpu_data is, but current_cpu_data and nr_sockets is not.

Then any reason not to use it (on the BSP)? I agree nr_sockets
is a problem, should it really be needed this early.

Jan



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