vmm/riscv: execute `sfence` after loading `satp`

2023-08-02 16:58:31 -05:00 · 2023-08-02 16:58:31 -05:00 · d7d4aea753
parent 56cdc669bf
commit d7d4aea753
2 changed files with 3 additions and 0 deletions
--- a/common/lib/spinup.asm_riscv64
+++ b/common/lib/spinup.asm_riscv64
@ -11,6 +11,7 @@ riscv_spinup:
        add     t0, t0, a3
        csrw    stvec, t0
        csrw    satp, a2
+        sfence.vma
        unimp
 .align 4
 0:
--- a/common/sys/smp_trampoline.asm_riscv64
+++ b/common/sys/smp_trampoline.asm_riscv64
@ -30,6 +30,8 @@ smp_trampoline_start:
        csrw    stvec, t0
        ld      t0, smp_tpl_satp(a1)
        csrw    satp, t0
+        sfence.vma
+        unimp
 0:
        // Relocate the info struct to the higher half.
        add     a0, t1, a0