[Xen-devel] [PATCH 2 of 2] [v3] xen/x86: Add FS and GS base to HVM VCPU context

[Aravindh Puthiyaparambil <aravindh@xxxxxxxxxxxx>]

Add FS and GS base to the HVM VCPU context returned by xc_vcpu_getcontext()

Signed-off-by: Aravindh Puthiyaparambil <aravindh@xxxxxxxxxxxx>

diff -r be41f3b599d9 -r 1f39b9fe704f xen/arch/x86/domctl.c
--- a/xen/arch/x86/domctl.c     Wed Apr 25 11:35:29 2012 -0700
+++ b/xen/arch/x86/domctl.c     Wed Apr 25 11:35:43 2012 -0700
@@ -1590,8 +1590,23 @@ void arch_get_info_guest(struct vcpu *v,
         c.nat->user_regs.es = sreg.sel;
         hvm_get_segment_register(v, x86_seg_fs, &sreg);
         c.nat->user_regs.fs = sreg.sel;
+#ifdef __x86_64__
+        c.nat->fs_base = sreg.base;
+#endif
         hvm_get_segment_register(v, x86_seg_gs, &sreg);
         c.nat->user_regs.gs = sreg.sel;
+#ifdef __x86_64__
+        if ( ring_0(&c.nat->user_regs) )
+        {
+            c.nat->gs_base_kernel = sreg.base;
+            c.nat->gs_base_user = hvm_get_shadow_gs_base(v);
+        }
+        else
+        {
+            c.nat->gs_base_user = sreg.base;
+            c.nat->gs_base_kernel = hvm_get_shadow_gs_base(v);
+        }
+#endif
     }
     else
     {

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