Host debug registers are now properly saved and restored before/after
entering the guest.
Signed-off-by: Jan Kiszka <[EMAIL PROTECTED]>
---
kernel/x86/external-module-compat.h | 2 --
kernel/x86/hack-module.awk | 4 ----
kernel/x86/preempt.c | 6 ------
3 files changed, 12 deletions(-)
Index: b/kernel/x86/external-module-compat.h
===================================================================
--- a/kernel/x86/external-module-compat.h
+++ b/kernel/x86/external-module-compat.h
@@ -171,7 +171,6 @@ static inline void preempt_notifier_init
void start_special_insn(void);
void end_special_insn(void);
void in_special_section(void);
-void special_reload_dr7(void);
void preempt_notifier_sys_init(void);
void preempt_notifier_sys_exit(void);
@@ -181,7 +180,6 @@ void preempt_notifier_sys_exit(void);
static inline void start_special_insn(void) {}
static inline void end_special_insn(void) {}
static inline void in_special_section(void) {}
-static inline void special_reload_dr7(void) {}
static inline void preempt_notifier_sys_init(void) {}
static inline void preempt_notifier_sys_exit(void) {}
Index: b/kernel/x86/hack-module.awk
===================================================================
--- a/kernel/x86/hack-module.awk
+++ b/kernel/x86/hack-module.awk
@@ -75,10 +75,6 @@ BEGIN { split("INIT_WORK tsc_khz desc_st
{ print }
-/kvm_x86_ops->run/ {
- print "\tspecial_reload_dr7();"
-}
-
/unsigned long flags;/ && vmx_load_host_state {
print "\tunsigned long gsbase;"
}
Index: b/kernel/x86/preempt.c
===================================================================
--- a/kernel/x86/preempt.c
+++ b/kernel/x86/preempt.c
@@ -40,12 +40,6 @@ static void preempt_enable_sched_in_noti
#endif
}
-void special_reload_dr7(void)
-{
- asm volatile ("mov %0, %%db7" : : "r"(0x701ul));
-}
-EXPORT_SYMBOL_GPL(special_reload_dr7);
-
static void __preempt_disable_notifiers(void)
{
asm volatile ("mov %0, %%db7" : : "r"(0ul));
--
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