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[1/7] target/arm: Enable FEAT_CSV2 for -cpu max

Message ID 20220410055725.380246-2-richard.henderson@linaro.org
State New
Headers show
Series target/arm: More trivial features, A76, N1 | expand

Commit Message

Richard Henderson April 10, 2022, 5:57 a.m. UTC 
This extension concerns branch speculation, which TCG does
not implement.  Thus we can trivially enable this feature.

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
---
 target/arm/cpu64.c   | 1 +
 target/arm/cpu_tcg.c | 1 +
 2 files changed, 2 insertions(+)

Comments

Peter Maydell April 11, 2022, 4:39 p.m. UTC | #1 
On Sun, 10 Apr 2022 at 06:58, Richard Henderson
<richard.henderson@linaro.org> wrote:
>
> This extension concerns branch speculation, which TCG does
> not implement.  Thus we can trivially enable this feature.
>
> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
> ---
>  target/arm/cpu64.c   | 1 +
>  target/arm/cpu_tcg.c | 1 +


Reviewed-by: Peter Maydell <peter.maydell@linaro.org>

thanks
-- PMM
diff mbox series

Patch

diff --git a/target/arm/cpu64.c b/target/arm/cpu64.c
index def0f1fdcb..c1006a067c 100644
--- a/target/arm/cpu64.c
+++ b/target/arm/cpu64.c
@@ -805,6 +805,7 @@  static void aarch64_max_initfn(Object *obj)
     t = FIELD_DP64(t, ID_AA64PFR0, SVE, 1);
     t = FIELD_DP64(t, ID_AA64PFR0, SEL2, 1);      /* FEAT_SEL2 */
     t = FIELD_DP64(t, ID_AA64PFR0, DIT, 1);       /* FEAT_DIT */
+    t = FIELD_DP64(t, ID_AA64PFR0, CSV2, 1);      /* FEAT_CSV2 */
     cpu->isar.id_aa64pfr0 = t;
 
     t = cpu->isar.id_aa64pfr1;
diff --git a/target/arm/cpu_tcg.c b/target/arm/cpu_tcg.c
index 5cce9116d0..2750cbebec 100644
--- a/target/arm/cpu_tcg.c
+++ b/target/arm/cpu_tcg.c
@@ -71,6 +71,7 @@  void arm32_max_features(ARMCPU *cpu)
     cpu->isar.id_mmfr4 = t;
 
     t = cpu->isar.id_pfr0;
+    t = FIELD_DP32(t, ID_PFR0, CSV2, 2);          /* FEAT_CVS2 */
     t = FIELD_DP32(t, ID_PFR0, DIT, 1);           /* FEAT_DIT */
     t = FIELD_DP32(t, ID_PFR0, RAS, 1);           /* FEAT_RAS */
     cpu->isar.id_pfr0 = t;