D20904.diff
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	Index: head/sys/arm64/arm64/efirt_machdep.c
	===================================================================
	--- head/sys/arm64/arm64/efirt_machdep.c
	+++ head/sys/arm64/arm64/efirt_machdep.c
	@@ -239,6 +239,7 @@

	__asm __volatile(
	"msr ttbr0_el1, %0 \n"
	+ "isb \n"
	"dsb ishst \n"
	"tlbi vmalle1is \n"
	"dsb ish \n"
	@@ -266,6 +267,7 @@
	td = curthread;
	__asm __volatile(
	"msr ttbr0_el1, %0 \n"
	+ "isb \n"
	"dsb ishst \n"
	"tlbi vmalle1is \n"
	"dsb ish \n"
	Index: head/sys/arm64/arm64/pmap.c
	===================================================================
	--- head/sys/arm64/arm64/pmap.c
	+++ head/sys/arm64/arm64/pmap.c
	@@ -5484,8 +5484,10 @@
	critical_enter();
	pmap = vmspace_pmap(td->td_proc->p_vmspace);
	td->td_proc->p_md.md_l0addr = vtophys(pmap->pm_l0);
	- __asm __volatile("msr ttbr0_el1, %0" : :
	- "r"(td->td_proc->p_md.md_l0addr));
	+ __asm __volatile(
	+ "msr ttbr0_el1, %0 \n"
	+ "isb \n"
	+ : : "r"(td->td_proc->p_md.md_l0addr));
	pmap_invalidate_all(pmap);
	critical_exit();
	}