[Xen-devel] [PATCH 27 of 36] x86_64: __switch_to(): Move arch_leave_lazy_cpu_mode() to the right place

[Jeremy Fitzhardinge <jeremy@xxxxxxxx>]

    We must leave lazy mode before switching the %fs and %gs selectors.

    (patch should be merged with previous
    __switch_to()/arch_leave_lazy_cpu_mode() patch)

Signed-off-by: Eduardo Habkost <ehabkost@xxxxxxxxxx>
Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@xxxxxxxxxx>
---
 arch/x86/kernel/process_64.c |    9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/arch/x86/kernel/process_64.c b/arch/x86/kernel/process_64.c
--- a/arch/x86/kernel/process_64.c
+++ b/arch/x86/kernel/process_64.c
@@ -603,6 +603,15 @@
 
        load_TLS(next, cpu);
 
+       /*
+        * Leave lazy mode, flushing any hypercalls made here.
+        * This must be done before restoring TLS segments so
+        * the GDT and LDT are properly updated, and must be
+        * done before math_state_restore, so the TS bit is up
+        * to date.
+        */
+       arch_leave_lazy_cpu_mode();
+
        /* 
         * Switch FS and GS.
         */



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