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authorPeter Maydell <peter.maydell@linaro.org>2020-10-08 21:41:20 +0100
committerPeter Maydell <peter.maydell@linaro.org>2020-10-08 21:41:20 +0100
commit497d415d76b9f59fcae27f22df1ca2c3fa4df64e (patch)
treee4c09699e7ad90a4ae2d2ece477c25a6569420e5 /docs
parente64cf4d569f6461d6b9072e00d6e78d0ab8bd4a7 (diff)
parentd1b6b7017572e8d82f26eb827a1dba0e8cf3cae6 (diff)
Merge remote-tracking branch 'remotes/pmaydell/tags/pull-target-arm-20201008-1' into staging
target-arm queue: * hw/ssi/npcm7xx_fiu: Fix handling of unsigned integer * hw/arm/fsl-imx25: Fix a typo * hw/arm/sbsa-ref : Fix SMMUv3 Initialisation * hw/arm/sbsa-ref : allocate IRQs for SMMUv3 * hw/char/bcm2835_aux: Allow less than 32-bit accesses * hw/arm/virt: Implement kvm-steal-time * target/arm: Make '-cpu max' have a 48-bit PA # gpg: Signature made Thu 08 Oct 2020 21:40:31 BST # gpg: using RSA key E1A5C593CD419DE28E8315CF3C2525ED14360CDE # gpg: issuer "peter.maydell@linaro.org" # gpg: Good signature from "Peter Maydell <peter.maydell@linaro.org>" [ultimate] # gpg: aka "Peter Maydell <pmaydell@gmail.com>" [ultimate] # gpg: aka "Peter Maydell <pmaydell@chiark.greenend.org.uk>" [ultimate] # Primary key fingerprint: E1A5 C593 CD41 9DE2 8E83 15CF 3C25 25ED 1436 0CDE * remotes/pmaydell/tags/pull-target-arm-20201008-1: target/arm: Make '-cpu max' have a 48-bit PA hw/arm/virt: Implement kvm-steal-time tests/qtest: Restore aarch64 arm-cpu-features test hw/arm/virt: Move kvm pmu setup to virt_cpu_post_init hw/arm/virt: Move post cpu realize check into its own function target/arm/kvm: Make uncalled stubs explicitly unreachable linux headers: sync to 5.9-rc7 hw/char/bcm2835_aux: Allow less than 32-bit accesses hw/arm/sbsa-ref : allocate IRQs for SMMUv3 hw/arm/sbsa-ref : Fix SMMUv3 Initialisation hw/arm/fsl-imx25: Fix a typo hw/ssi/npcm7xx_fiu: Fix handling of unsigned integer Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Diffstat (limited to 'docs')
-rw-r--r--docs/system/arm/cpu-features.rst11
1 files changed, 11 insertions, 0 deletions
diff --git a/docs/system/arm/cpu-features.rst b/docs/system/arm/cpu-features.rst
index 2d5c06cd01..35196a6b75 100644
--- a/docs/system/arm/cpu-features.rst
+++ b/docs/system/arm/cpu-features.rst
@@ -200,6 +200,17 @@ the list of KVM VCPU features and their descriptions.
adjustment, also restoring the legacy (pre-5.0)
behavior.
+ kvm-steal-time Since v5.2, kvm-steal-time is enabled by
+ default when KVM is enabled, the feature is
+ supported, and the guest is 64-bit.
+
+ When kvm-steal-time is enabled a 64-bit guest
+ can account for time its CPUs were not running
+ due to the host not scheduling the corresponding
+ VCPU threads. The accounting statistics may
+ influence the guest scheduler behavior and/or be
+ exposed to the guest userspace.
+
SVE CPU Properties
==================