Author: br
Date: Tue Jun 4 15:42:30 2019
New Revision: 348627
URL: https://svnweb.freebsd.org/changeset/base/348627
Log:
MFC r347427:
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.
Sponsored by: DARPA, AFRL
Modified:
stable/12/sys/riscv/riscv/pmap.c
Modified: stable/12/sys/riscv/riscv/pmap.c
==============================================================================
--- stable/12/sys/riscv/riscv/pmap.c Tue Jun 4 15:40:30 2019
(r348626)
+++ stable/12/sys/riscv/riscv/pmap.c Tue Jun 4 15:42:30 2019
(r348627)
@@ -3122,16 +3122,6 @@ 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");
}
/*
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