diff options
Diffstat (limited to 'arch/x86/xen/enlighten_pv.c')
| -rw-r--r-- | arch/x86/xen/enlighten_pv.c | 32 |
1 files changed, 23 insertions, 9 deletions
diff --git a/arch/x86/xen/enlighten_pv.c b/arch/x86/xen/enlighten_pv.c index 9a5a50cdaab5..dc0a337f985b 100644 --- a/arch/x86/xen/enlighten_pv.c +++ b/arch/x86/xen/enlighten_pv.c @@ -567,10 +567,16 @@ void noist_exc_debug(struct pt_regs *regs); DEFINE_IDTENTRY_RAW(xenpv_exc_nmi) { - /* On Xen PV, NMI doesn't use IST. The C part is the sane as native. */ + /* On Xen PV, NMI doesn't use IST. The C part is the same as native. */ exc_nmi(regs); } +DEFINE_IDTENTRY_RAW_ERRORCODE(xenpv_exc_double_fault) +{ + /* On Xen PV, DF doesn't use IST. The C part is the same as native. */ + exc_double_fault(regs, error_code); +} + DEFINE_IDTENTRY_RAW(xenpv_exc_debug) { /* @@ -590,6 +596,20 @@ DEFINE_IDTENTRY_RAW(exc_xen_unknown_trap) BUG(); } +#ifdef CONFIG_X86_MCE +DEFINE_IDTENTRY_RAW(xenpv_exc_machine_check) +{ + /* + * There's no IST on Xen PV, but we still need to dispatch + * to the correct handler. + */ + if (user_mode(regs)) + noist_exc_machine_check(regs); + else + exc_machine_check(regs); +} +#endif + struct trap_array_entry { void (*orig)(void); void (*xen)(void); @@ -608,9 +628,9 @@ struct trap_array_entry { static struct trap_array_entry trap_array[] = { TRAP_ENTRY_REDIR(exc_debug, true ), - TRAP_ENTRY(exc_double_fault, true ), + TRAP_ENTRY_REDIR(exc_double_fault, true ), #ifdef CONFIG_X86_MCE - TRAP_ENTRY(exc_machine_check, true ), + TRAP_ENTRY_REDIR(exc_machine_check, true ), #endif TRAP_ENTRY_REDIR(exc_nmi, true ), TRAP_ENTRY(exc_int3, false ), @@ -1015,8 +1035,6 @@ void __init xen_setup_vcpu_info_placement(void) */ if (xen_have_vcpu_info_placement) { pv_ops.irq.save_fl = __PV_IS_CALLEE_SAVE(xen_save_fl_direct); - pv_ops.irq.restore_fl = - __PV_IS_CALLEE_SAVE(xen_restore_fl_direct); pv_ops.irq.irq_disable = __PV_IS_CALLEE_SAVE(xen_irq_disable_direct); pv_ops.irq.irq_enable = @@ -1053,7 +1071,6 @@ static const struct pv_cpu_ops xen_cpu_ops __initconst = { .read_pmc = xen_read_pmc, .iret = xen_iret, - .usergs_sysret64 = xen_sysret64, .load_tr_desc = paravirt_nop, .set_ldt = xen_set_ldt, @@ -1078,9 +1095,6 @@ static const struct pv_cpu_ops xen_cpu_ops __initconst = { #endif .io_delay = xen_io_delay, - /* Xen takes care of %gs when switching to usermode for us */ - .swapgs = paravirt_nop, - .start_context_switch = paravirt_start_context_switch, .end_context_switch = xen_end_context_switch, }; |