Re: [PATCH] x86/xen: add call of speculative_store_bypass_ht_init() to pv paths

On 06/21/2018 04:43 AM, Juergen Gross wrote:

Commit 1f50ddb4f4189243c05926b842dc1a0332195f31 ("x86/speculation: Handle HT correctly on AMD") added speculative_store_bypass_ht_init() to the per-cpu initialization sequence.

speculative_store_bypass_ht_init() needs to be called on each cpu for pv guests, too.

Reported-by: Brian Woods brian.woods@amd.com Fixes: 1f50ddb4f4189243c05926b842dc1a0332195f31 ("x86/speculation: Handle HT correctly on AMD") Cc: stable@vger.kernel.org Signed-off-by: Juergen Gross jgross@suse.com Tested-by: Brian Woods brian.woods@amd.com

Reviewed-by: Boris Ostrovsky boris.ostrovsky@oracle.com