[PATCH 5/5] lib: sbi_trap: Set hstatus.GVA when going to HS-mode

[Vivian Wang]

The privileged spec specifies that on a trap to HS-mode, hstatus.GVA
should be set to 1 if stval is written with a guest virtual address, and
to 0 otherwise. Implement this by setting hstatus.GVA to trap->gva when
redirecting traps to HS-mode.

Signed-off-by: Vivian Wang <dramforever at live.com>
---
 lib/sbi/sbi_trap.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/lib/sbi/sbi_trap.c b/lib/sbi/sbi_trap.c
index 6e3202b..65408de 100644
--- a/lib/sbi/sbi_trap.c
+++ b/lib/sbi/sbi_trap.c
@@ -128,6 +128,8 @@ int sbi_trap_redirect(struct sbi_trap_regs *regs,
 		}
 		hstatus &= ~HSTATUS_SPV;
 		hstatus |= (prev_virt) ? HSTATUS_SPV : 0;
+		hstatus &= ~HSTATUS_GVA;
+		hstatus |= (trap->gva) ? HSTATUS_GVA : 0;
 		csr_write(CSR_HSTATUS, hstatus);
 		csr_write(CSR_HTVAL, trap->tval2);
 		csr_write(CSR_HTINST, trap->tinst);
-- 
2.37.1