xen64: implement xen_load_gs_index() (a8fc1089) · Commits · 戴 / test

xen-64: implement xen_load_gs_index() Signed-off-by:

Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com> Cc: Stephen Tweedie <sct@redhat.com> Cc: Mark McLoughlin <markmc@redhat.com> Signed-off-by:

arch/x86/xen/enlighten.c

+11 −0

Original line number	Diff line number	Diff line
		@@ -385,6 +385,14 @@ static void xen_load_tls(struct thread_struct *t, unsigned int cpu)
		loadsegment(gs, 0);
		}

		#ifdef CONFIG_X86_64
		static void xen_load_gs_index(unsigned int idx)
		{
		if (HYPERVISOR_set_segment_base(SEGBASE_GS_USER_SEL, idx))
		BUG();
		}
		#endif

		static void xen_write_ldt_entry(struct desc_struct *dt, int entrynum,
		const void *ptr)
		{
		@@ -1063,6 +1071,9 @@ static const struct pv_cpu_ops xen_cpu_ops __initdata = {
		.load_gdt = xen_load_gdt,
		.load_idt = xen_load_idt,
		.load_tls = xen_load_tls,
		#ifdef CONFIG_X86_64
		.load_gs_index = xen_load_gs_index,
		#endif

		.store_gdt = native_store_gdt,
		.store_idt = native_store_idt,