From: Tamas K Lengyel <tamas.lengyel@intel.com>
Date: Tue, 5 Jan 2021 21:58:23 +0000 (-0800)
Subject: x86/mem_sharing: Copy CPUID and MSR configuration during vm forking
X-Git-Tag: archive/raspbian/4.16.0+51-g0941d6cb-1+rpi1~2^2~42^2~1194
X-Git-Url: https://dgit.raspbian.org/?a=commitdiff_plain;h=2c5119d637d46a4af759213a4eba042ae278464d;p=xen.git

x86/mem_sharing: Copy CPUID and MSR configuration during vm forking

Signed-off-by: Tamas K Lengyel <tamas.lengyel@intel.com>
Acked-by: Andrew Cooper <andrew.cooper3@citrix.com>
---

diff --git a/xen/arch/x86/mm/mem_sharing.c b/xen/arch/x86/mm/mem_sharing.c
index c428fd16ce..fc7b2a4102 100644
--- a/xen/arch/x86/mm/mem_sharing.c
+++ b/xen/arch/x86/mm/mem_sharing.c
@@ -1764,6 +1764,8 @@ static int fork(struct domain *cd, struct domain *d)
 
         domain_pause(d);
         cd->max_pages = d->max_pages;
+        *cd->arch.cpuid = *d->arch.cpuid;
+        *cd->arch.msrs = *d->arch.msrs;
         cd->parent = d;
     }