diff options
| -rw-r--r-- | arch/x86/xen/enlighten.c | 15 |
1 files changed, 13 insertions, 2 deletions
diff --git a/arch/x86/xen/enlighten.c b/arch/x86/xen/enlighten.c index 8c5ff24a492b..bc129146f99f 100644 --- a/arch/x86/xen/enlighten.c +++ b/arch/x86/xen/enlighten.c @@ -532,26 +532,37 @@ static void xen_apic_write(unsigned long reg, u32 val) static void xen_flush_tlb(void) { struct mmuext_op *op; - struct multicall_space mcs = xen_mc_entry(sizeof(*op)); + struct multicall_space mcs; + + preempt_disable(); + + mcs = xen_mc_entry(sizeof(*op)); op = mcs.args; op->cmd = MMUEXT_TLB_FLUSH_LOCAL; MULTI_mmuext_op(mcs.mc, op, 1, NULL, DOMID_SELF); xen_mc_issue(PARAVIRT_LAZY_MMU); + + preempt_enable(); } static void xen_flush_tlb_single(unsigned long addr) { struct mmuext_op *op; - struct multicall_space mcs = xen_mc_entry(sizeof(*op)); + struct multicall_space mcs; + + preempt_disable(); + mcs = xen_mc_entry(sizeof(*op)); op = mcs.args; op->cmd = MMUEXT_INVLPG_LOCAL; op->arg1.linear_addr = addr & PAGE_MASK; MULTI_mmuext_op(mcs.mc, op, 1, NULL, DOMID_SELF); xen_mc_issue(PARAVIRT_LAZY_MMU); + + preempt_enable(); } static void xen_flush_tlb_others(const cpumask_t *cpus, struct mm_struct *mm, |