29b03965de
QEMU does not support disable/enable CPU features in AArch64 for now. This patch series add support for CPU features in AArch64. Firstly, we change the isar struct in ARMCPU to an array for convenience. Secondly, we add support to configure CPU feautres in AArch64 and make sure that the ID registers can be synchronized to KVM so that guest can read the value we configure. Thirdly, we add a mechanism to solve the dependency relationship of some CPU features. Last, we add a KVM_CAP_ARM_CPU_FEATURE to check whether KVM supports to set CPU features in AArch64. Also export CPU features to the result of qmp query-cpu-model-expansion so that libvirt can get the supported CPU features. Update the ID fields to ARMv8.6 and add some CPU features according to the new ID fields. With related KVM patch set[1], we can disable/enable CPU features in AArch64. [1] https://patchwork.kernel.org/cover/11711693/ Signed-off-by: Peng Liang <liangpeng10@huawei.com>
31 lines
1.1 KiB
Diff
31 lines
1.1 KiB
Diff
From 3eee1e4ff1ca342e760f759c727abc41780d0afa Mon Sep 17 00:00:00 2001
|
|
From: Peng Liang <liangpeng10@huawei.com>
|
|
Date: Tue, 11 Aug 2020 10:28:10 +0800
|
|
Subject: [PATCH 9/9] target/arm: Add more CPU features
|
|
|
|
Add i8mm, bf16, and dgh CPU features for AArch64.
|
|
|
|
Signed-off-by: zhanghailiang <zhang.zhanghailiang@huawei.com>
|
|
Signed-off-by: Peng Liang <liangpeng10@huawei.com>
|
|
---
|
|
target/arm/cpu.c | 3 +++
|
|
1 file changed, 3 insertions(+)
|
|
|
|
diff --git a/target/arm/cpu.c b/target/arm/cpu.c
|
|
index dcf9f49e..7ae2d3da 100644
|
|
--- a/target/arm/cpu.c
|
|
+++ b/target/arm/cpu.c
|
|
@@ -1132,6 +1132,9 @@ static struct CPUFeatureInfo cpu_features[] = {
|
|
FIELD_INFO("fhm", ID_ISAR6, FHM, false, 1, 0, true),
|
|
FIELD_INFO("sb", ID_ISAR6, SB, false, 1, 0, true),
|
|
FIELD_INFO("specres", ID_ISAR6, SPECRES, false, 1, 0, true),
|
|
+ FIELD_INFO("i8mm", ID_AA64ISAR1, I8MM, false, 1, 0, false),
|
|
+ FIELD_INFO("bf16", ID_AA64ISAR1, BF16, false, 1, 0, false),
|
|
+ FIELD_INFO("dgh", ID_AA64ISAR1, DGH, false, 1, 0, false),
|
|
|
|
FIELD_INFO("cmaintva", ID_MMFR3, CMAINTVA, false, 1, 0, true),
|
|
FIELD_INFO("cmaintsw", ID_MMFR3, CMAINTSW, false, 1, 0, true),
|
|
--
|
|
2.25.1
|
|
|