D17139.id.diff
No OneTemporary
Actions

Size

775 B

Referenced Files

None

Subscribers

None

D17139.id.diff
View Options

	Index: head/sys/riscv/riscv/pmap.c
	===================================================================
	--- head/sys/riscv/riscv/pmap.c
	+++ head/sys/riscv/riscv/pmap.c
	@@ -3244,11 +3244,27 @@
	critical_exit();
	}

	+static void
	+pmap_sync_icache_one(void *arg __unused)
	+{
	+
	+ __asm __volatile("fence.i");
	+}
	+
	void
	pmap_sync_icache(pmap_t pm, vm_offset_t va, vm_size_t sz)
	{

	- panic("RISCVTODO: pmap_sync_icache");
	+ /*
	+ * From the RISC-V User-Level ISA V2.2:
	+ *
	+ * "To make a store to instruction memory visible to all
	+ * RISC-V harts, the writing hart has to execute a data FENCE
	+ * before requesting that all remote RISC-V harts execute a
	+ * FENCE.I."
	+ */
	+ __asm __volatile("fence");
	+ smp_rendezvous(NULL, pmap_sync_icache_one, NULL, NULL);
	}

	/*