From: Sebastian Ene <sebastianene@google.com>
To: kvm@vger.kernel.org
Cc: maz@kernel.org, will@kernel.org, kvmarm@lists.cs.columbia.edu
Subject: [PATCH kvmtool v4 0/3] aarch64: Add stolen time support
Date: Thu, 24 Feb 2022 16:51:01 +0000 [thread overview]
Message-ID: <20220224165103.1157358-1-sebastianene@google.com> (raw)
These patches add support for stolen time functionality.
Patch #1 modifies the memory layout in arm-common/kvm-arch.h and adds a
new MMIO device, PVTIME after the RTC region. A new flag is added in
kvm-config.h that will be used to control [enable/disable] the pvtime
functionality.
Patch #2 moves the vCPU structure initialisation before the target->init()
call to allow early access to the kvm structure.
Patch #3 adds a new command line argument to disable the stolen time
functionality(by default is enabled).
Changelog sinde v3:
- Avoid the pvtime overlap with the PCI(AXI) region by moving the
peripheral in the MMIO zone, after the RTC.
- Split in a separate patch the change affecting the vCPU structure
population
- Added a new command line argument in a separate patch.
Changelog since v2:
- Moved the AARCH64_PVTIME_* definitions from arm-common/kvm-arch.h to
arm64/pvtime.c as pvtime is only available for arm64.
Changelog since v1:
- Removed the pvtime.h header file and moved the definitions to kvm-cpu-arch.h
Verified if the stolen time capability is supported before allocating
and mapping the memory.
Sebastian Ene (3):
aarch64: Add stolen time support
aarch64: Populate the vCPU struct before target->init()
Add --no-pvtime command line argument
Makefile | 1 +
arm/aarch64/arm-cpu.c | 1 +
arm/aarch64/include/kvm/kvm-cpu-arch.h | 1 +
arm/aarch64/pvtime.c | 94 ++++++++++++++++++++++++++
arm/include/arm-common/kvm-arch.h | 6 +-
arm/kvm-cpu.c | 14 ++--
builtin-run.c | 2 +
include/kvm/kvm-config.h | 1 +
8 files changed, 112 insertions(+), 8 deletions(-)
create mode 100644 arm/aarch64/pvtime.c
--
2.35.1.473.g83b2b277ed-goog
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next reply other threads:[~2022-02-24 16:55 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-02-24 16:51 Sebastian Ene [this message]
2022-02-24 16:51 ` [PATCH kvmtool v4 1/3] aarch64: Add stolen time support Sebastian Ene
2022-02-25 11:55 ` Alexandru Elisei
2022-02-25 13:21 ` Sebastian Ene
2022-02-25 13:54 ` Alexandru Elisei
2022-02-24 16:51 ` [PATCH kvmtool v4 2/3] aarch64: Populate the vCPU struct before target->init() Sebastian Ene
2022-02-24 16:51 ` [PATCH kvmtool v4 3/3] Add --no-pvtime command line argument Sebastian Ene
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