From 581bc4cbd1f6f5c207e729b78fac4328aef01228 Mon Sep 17 00:00:00 2001 From: Robert Morris Date: Wed, 24 Aug 2022 13:42:59 -0400 Subject: [PATCH] sfence before enabling paging --- kernel/vm.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/kernel/vm.c b/kernel/vm.c index 284b72d..9f69783 100644 --- a/kernel/vm.c +++ b/kernel/vm.c @@ -61,7 +61,12 @@ kvminit(void) void kvminithart() { + // wait for any previous writes to the page table memory to finish. + sfence_vma(); + w_satp(MAKE_SATP(kernel_pagetable)); + + // flush stale entries from the TLB. sfence_vma(); }