From ef68f03ec2bb74993d888995c336fece24f362de Mon Sep 17 00:00:00 2001 From: Ruslan Bukin Date: Fri, 10 May 2019 11:21:57 +0000 Subject: [PATCH] RISC-V ISA does not specify how to manage physical memory attributes (PMA). So do nothing in pmap_page_set_memattr() and don't panic. Reviewed by: markj Sponsored by: DARPA, AFRL Differential Revision: https://reviews.freebsd.org/D20209 --- sys/riscv/riscv/pmap.c | 10 ---------- 1 file changed, 10 deletions(-) diff --git a/sys/riscv/riscv/pmap.c b/sys/riscv/riscv/pmap.c index eeeb48bb497..96c7752699e 100644 --- a/sys/riscv/riscv/pmap.c +++ b/sys/riscv/riscv/pmap.c @@ -4200,16 +4200,6 @@ pmap_page_set_memattr(vm_page_t m, vm_memattr_t ma) { m->md.pv_memattr = ma; - - /* - * RISCVTODO: Implement the below (from the amd64 pmap) - * If "m" is a normal page, update its direct mapping. This update - * can be relied upon to perform any cache operations that are - * required for data coherence. - */ - if ((m->flags & PG_FICTITIOUS) == 0 && - PHYS_IN_DMAP(VM_PAGE_TO_PHYS(m))) - panic("RISCVTODO: pmap_page_set_memattr"); } /*