[Xen-devel] [PATCH 2/9] x86/pvh: Don't copy to/from trap_ctxt for 32b PVH guests

[Boris Ostrovsky <boris.ostrovsky@xxxxxxxxxx>]

.. as this field is not used by PVH guests

Signed-off-by: Boris Ostrovsky <boris.ostrovsky@xxxxxxxxxx>
CC: Keir Fraser <keir@xxxxxxx>
CC: Jan Beulich <jbeulich@xxxxxxxx>
CC: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>

---
 xen/arch/x86/domain.c |    9 ++++++---
 xen/arch/x86/domctl.c |    9 ++++++---
 2 files changed, 12 insertions(+), 6 deletions(-)

diff --git a/xen/arch/x86/domain.c b/xen/arch/x86/domain.c
index e396c6c..c7ef1e6 100644
--- a/xen/arch/x86/domain.c
+++ b/xen/arch/x86/domain.c
@@ -805,9 +805,12 @@ int arch_set_info_guest(
     else
     {
         XLAT_cpu_user_regs(&v->arch.user_regs, &c.cmp->user_regs);
-        for ( i = 0; i < ARRAY_SIZE(c.cmp->trap_ctxt); ++i )
-            XLAT_trap_info(v->arch.pv_vcpu.trap_ctxt + i,
-                           c.cmp->trap_ctxt + i);
+        if ( is_pv_domain(d) )
+        {
+            for ( i = 0; i < ARRAY_SIZE(c.cmp->trap_ctxt); ++i )
+                XLAT_trap_info(v->arch.pv_vcpu.trap_ctxt + i,
+                               c.cmp->trap_ctxt + i);
+        }
     }
 
     if ( has_hvm_container_domain(d) )
diff --git a/xen/arch/x86/domctl.c b/xen/arch/x86/domctl.c
index d8ffe2b..82bd818 100644
--- a/xen/arch/x86/domctl.c
+++ b/xen/arch/x86/domctl.c
@@ -1204,9 +1204,12 @@ void arch_get_info_guest(struct vcpu *v, 
vcpu_guest_context_u c)
     else
     {
         XLAT_cpu_user_regs(&c.cmp->user_regs, &v->arch.user_regs);
-        for ( i = 0; i < ARRAY_SIZE(c.cmp->trap_ctxt); ++i )
-            XLAT_trap_info(c.cmp->trap_ctxt + i,
-                           v->arch.pv_vcpu.trap_ctxt + i);
+        if ( is_pv_domain(d) )
+        {
+            for ( i = 0; i < ARRAY_SIZE(c.cmp->trap_ctxt); ++i )
+                XLAT_trap_info(c.cmp->trap_ctxt + i,
+                               v->arch.pv_vcpu.trap_ctxt + i);
+        }
     }
 
     for ( i = 0; i < ARRAY_SIZE(v->arch.debugreg); ++i )
-- 
1.7.1


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