x86/pv: Drop unused switch_kernel_stack()

Signed-off-by: Andrew Cooper <andrew.cooper3@citrix.com>
Reviewed-by: Wei Liu <wei.liu2@citrix.com>
Acked-by: Jan Beulich <jbeulich@suse.com>

diff --git a/xen/arch/x86/domain.c b/xen/arch/x86/domain.c
index 13cdc504dd258d8b18430373024255842256420b..d9f3cfad29c1f8b89fd9888830c70a764440e9d8 100644 (file)
--- a/xen/arch/x86/domain.c
+++ b/xen/arch/x86/domain.c
@@ -1885,8 +1885,6 @@ static void save_segments(struct vcpu *v)
     this_cpu(dirty_segment_mask) = dirty_segment_mask;
 }
 
-#define switch_kernel_stack(v) ((void)0)
-
 static void paravirt_ctxt_switch_from(struct vcpu *v)
 {
     save_segments(v);
@@ -1905,8 +1903,6 @@ static void paravirt_ctxt_switch_to(struct vcpu *v)
 {
     unsigned long cr4;
 
-    switch_kernel_stack(v);
-
     cr4 = pv_guest_cr4_to_real_cr4(v);
     if ( unlikely(cr4 != read_cr4()) )
         write_cr4(cr4);