[Xen-devel] [PATCH v2 12/16] x86: stub out PV only code in do_debug

[Wei Liu <wei.liu2@xxxxxxxxxx>]

When PV is disabled those symbols won't be available. It is impossible
for Xen to hit #DB there.

Signed-off-by: Wei Liu <wei.liu2@xxxxxxxxxx>
---
v2: new
---
 xen/arch/x86/traps.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/xen/arch/x86/traps.c b/xen/arch/x86/traps.c
index 002e98f..7cca072 100644
--- a/xen/arch/x86/traps.c
+++ b/xen/arch/x86/traps.c
@@ -1841,6 +1841,7 @@ void do_debug(struct cpu_user_regs *regs)
 
         if ( regs->eflags & X86_EFLAGS_TF )
         {
+#ifdef CONFIG_PV
             /* In SYSENTER entry path we can't zap TF until EFLAGS is saved. */
             if ( (regs->rip >= (unsigned long)sysenter_entry) &&
                  (regs->rip <= (unsigned long)sysenter_eflags_saved) )
@@ -1849,6 +1850,7 @@ void do_debug(struct cpu_user_regs *regs)
                     regs->eflags &= ~X86_EFLAGS_TF;
                 return;
             }
+#endif
             if ( !debugger_trap_fatal(TRAP_debug, regs) )
             {
                 WARN();
-- 
git-series 0.9.1

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