[Xen-changelog] [xen staging] x86/vvmx: set CR4 before CR0

[patchbot@xxxxxxx]

commit 3af3c95b81625adf7e6ea71c94b641424741eded
Author:     Sergey Dyasli <sergey.dyasli@xxxxxxxxxx>
AuthorDate: Thu Mar 29 16:47:06 2018 +0100
Commit:     Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
CommitDate: Fri Jun 28 13:17:53 2019 +0100

    x86/vvmx: set CR4 before CR0
    
    Otherwise hvm_set_cr0() will check the wrong CR4 bits (L1 instead of L2
    and vice-versa).
    
    Signed-off-by: Sergey Dyasli <sergey.dyasli@xxxxxxxxxx>
    Reviewed-by: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
    Reviewed-by: Roger Pau Monné <roger.pau@xxxxxxxxxx>
    Acked-by: Kevin Tian <kevin.tian@xxxxxxxxx>
---
 xen/arch/x86/hvm/vmx/vvmx.c | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/xen/arch/x86/hvm/vmx/vvmx.c b/xen/arch/x86/hvm/vmx/vvmx.c
index 7bca572d88..332623d006 100644
--- a/xen/arch/x86/hvm/vmx/vvmx.c
+++ b/xen/arch/x86/hvm/vmx/vvmx.c
@@ -1024,11 +1024,11 @@ static void load_shadow_guest_state(struct vcpu *v)
     nvcpu->guest_cr[0] = get_vvmcs(v, CR0_READ_SHADOW);
     nvcpu->guest_cr[4] = get_vvmcs(v, CR4_READ_SHADOW);
 
-    rc = hvm_set_cr0(get_vvmcs(v, GUEST_CR0), true);
+    rc = hvm_set_cr4(get_vvmcs(v, GUEST_CR4), true);
     if ( rc == X86EMUL_EXCEPTION )
         hvm_inject_hw_exception(TRAP_gp_fault, 0);
 
-    rc = hvm_set_cr4(get_vvmcs(v, GUEST_CR4), true);
+    rc = hvm_set_cr0(get_vvmcs(v, GUEST_CR0), true);
     if ( rc == X86EMUL_EXCEPTION )
         hvm_inject_hw_exception(TRAP_gp_fault, 0);
 
@@ -1238,11 +1238,11 @@ static void load_vvmcs_host_state(struct vcpu *v)
         __vmwrite(vmcs_h2g_field[i].guest_field, r);
     }
 
-    rc = hvm_set_cr0(get_vvmcs(v, HOST_CR0), true);
+    rc = hvm_set_cr4(get_vvmcs(v, HOST_CR4), true);
     if ( rc == X86EMUL_EXCEPTION )
         hvm_inject_hw_exception(TRAP_gp_fault, 0);
 
-    rc = hvm_set_cr4(get_vvmcs(v, HOST_CR4), true);
+    rc = hvm_set_cr0(get_vvmcs(v, HOST_CR0), true);
     if ( rc == X86EMUL_EXCEPTION )
         hvm_inject_hw_exception(TRAP_gp_fault, 0);
 
--
generated by git-patchbot for /home/xen/git/xen.git#staging

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