[PATCH]: 1d8e35f993 target/riscv: disable cache-on-read for VL and VSTART

[<ge...@op...>]

This is an automated email from Gerrit.

"Anatoly P <kup...@gm...>" just uploaded a new patch set to Gerrit, which you can find at https://review.openocd.org/c/openocd/+/9414

-- gerrit

commit 1d8e35f993c0f32c5f854e3813c1452a649891b3
Author: Parshintsev Anatoly <ana...@sy...>
Date:   Thu Jan 29 21:32:32 2026 +0300

    target/riscv: disable cache-on-read for VL and VSTART
    
    When VTYPE is updated:
    
    - VL is set to some appropriate value
    - VSTART is set to zero
    
    Change-Id: If67d0e4a1058d35f47b42c67abc2183836f34f22
    Signed-off-by: Anatoly Parshintsev <ana...@sy...>

diff --git a/src/target/riscv/riscv_reg_impl.h b/src/target/riscv/riscv_reg_impl.h
index 17e66935be..227e525be3 100644
--- a/src/target/riscv/riscv_reg_impl.h
+++ b/src/target/riscv/riscv_reg_impl.h
@@ -195,11 +195,9 @@ static inline bool riscv_reg_impl_gdb_regno_cacheable(enum gdb_regno regno,
 	 * CSRs. */
 	switch (regno) {
 	case GDB_REGNO_DPC:
-	case GDB_REGNO_VSTART:
 	case GDB_REGNO_VXSAT:
 	case GDB_REGNO_VXRM:
 	case GDB_REGNO_VLENB:
-	case GDB_REGNO_VL:
 	case GDB_REGNO_VTYPE:
 	case GDB_REGNO_MISA:
 	case GDB_REGNO_DCSR:
@@ -215,6 +213,8 @@ static inline bool riscv_reg_impl_gdb_regno_cacheable(enum gdb_regno regno,
 	case GDB_REGNO_TSELECT:	/* I think this should be above, but then it doesn't work. */
 	case GDB_REGNO_TDATA1:	/* Changes value when tselect is changed. */
 	case GDB_REGNO_TDATA2:  /* Changes value when tselect is changed. */
+	case GDB_REGNO_VSTART: /* Changes value when vtype is changed. */
+	case GDB_REGNO_VL: /* Changes value when vtype is changed. */
 	default:
 		return false;
 	}

--