From 2c2e0f2842520bcd25472285cfce39696e52e662 Mon Sep 17 00:00:00 2001 From: Jim Shu Date: Sun, 21 Feb 2021 22:01:22 +0800 Subject: target/riscv: flush TLB pages if PMP permission has been changed If PMP permission of any address has been changed by updating PMP entry, flush all TLB pages to prevent from getting old permission. Signed-off-by: Jim Shu Reviewed-by: Alistair Francis Message-id: 1613916082-19528-4-git-send-email-cwshu@andestech.com Signed-off-by: Alistair Francis --- target/riscv/pmp.c | 4 ++++ 1 file changed, 4 insertions(+) (limited to 'target') diff --git a/target/riscv/pmp.c b/target/riscv/pmp.c index ebd874cde3..cff020122a 100644 --- a/target/riscv/pmp.c +++ b/target/riscv/pmp.c @@ -28,6 +28,7 @@ #include "qapi/error.h" #include "cpu.h" #include "trace.h" +#include "exec/exec-all.h" static void pmp_write_cfg(CPURISCVState *env, uint32_t addr_index, uint8_t val); @@ -347,6 +348,9 @@ void pmpcfg_csr_write(CPURISCVState *env, uint32_t reg_index, cfg_val = (val >> 8 * i) & 0xff; pmp_write_cfg(env, (reg_index * 4) + i, cfg_val); } + + /* If PMP permission of any addr has been changed, flush TLB pages. */ + tlb_flush(env_cpu(env)); } -- cgit v1.2.3