D18732.id52519.diff
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D18732.id52519.diff
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	Index: sys/riscv/riscv/pmap.c
	===================================================================
	--- sys/riscv/riscv/pmap.c
	+++ sys/riscv/riscv/pmap.c
	@@ -3019,15 +3019,13 @@
	}
	}
	l3 = pmap_l3(pmap, pv->pv_va);
	-retry:
	oldl3 = pmap_load(l3);
	-
	+retry:
	if ((oldl3 & PTE_W) != 0) {
	- newl3 = oldl3 & ~PTE_W;
	- if (!atomic_cmpset_long(l3, oldl3, newl3))
	+ newl3 = oldl3 & ~(PTE_D \| PTE_W);
	+ if (!atomic_fcmpset_long(l3, &oldl3, newl3))
	goto retry;
	- /* TODO: check for PTE_D? */
	- if ((oldl3 & PTE_A) != 0)
	+ if ((oldl3 & PTE_D) != 0)
	vm_page_dirty(m);
	pmap_invalidate_page(pmap, pv->pv_va);
	}