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Diffstat (limited to 'arch/x86/xen/enlighten_pv.c')
-rw-r--r--arch/x86/xen/enlighten_pv.c12
1 files changed, 12 insertions, 0 deletions
diff --git a/arch/x86/xen/enlighten_pv.c b/arch/x86/xen/enlighten_pv.c
index 0d68948c82ad..c46b9f2e732f 100644
--- a/arch/x86/xen/enlighten_pv.c
+++ b/arch/x86/xen/enlighten_pv.c
@@ -870,6 +870,17 @@ static void xen_load_sp0(unsigned long sp0)
}
#ifdef CONFIG_X86_IOPL_IOPERM
+static void xen_invalidate_io_bitmap(void)
+{
+ struct physdev_set_iobitmap iobitmap = {
+ .bitmap = 0,
+ .nr_ports = 0,
+ };
+
+ native_tss_invalidate_io_bitmap();
+ HYPERVISOR_physdev_op(PHYSDEVOP_set_iobitmap, &iobitmap);
+}
+
static void xen_update_io_bitmap(void)
{
struct physdev_set_iobitmap iobitmap;
@@ -1099,6 +1110,7 @@ static const struct pv_cpu_ops xen_cpu_ops __initconst = {
.load_sp0 = xen_load_sp0,
#ifdef CONFIG_X86_IOPL_IOPERM
+ .invalidate_io_bitmap = xen_invalidate_io_bitmap,
.update_io_bitmap = xen_update_io_bitmap,
#endif
.io_delay = xen_io_delay,