From: Easwar Hariharan <eahariha@linux.microsoft.com>
To: Nuno Das Neves <nunodasneves@linux.microsoft.com>
Cc: linux-hyperv@vger.kernel.org,
linux-arm-kernel@lists.infradead.org,
linux-kernel@vger.kernel.org, linux-arch@vger.kernel.org,
iommu@lists.linux.dev, mhklinux@outlook.com,
eahariha@linux.microsoft.com, kys@microsoft.com,
haiyangz@microsoft.com, wei.liu@kernel.org, decui@microsoft.com,
catalin.marinas@arm.com, will@kernel.org, tglx@linutronix.de,
mingo@redhat.com, bp@alien8.de, dave.hansen@linux.intel.com,
x86@kernel.org, hpa@zytor.com, daniel.lezcano@linaro.org,
joro@8bytes.org, robin.murphy@arm.com, arnd@arndb.de,
jinankjain@linux.microsoft.com, muminulrussell@gmail.com,
skinsburskii@linux.microsoft.com, mukeshrathor@microsoft.com
Subject: Re: [PATCH v2 2/3] hyperv: Change hv_root_partition into a function
Date: Thu, 20 Feb 2025 10:56:37 -0800 [thread overview]
Message-ID: <db2015a0-63a3-4005-9ad1-9b2f0b57ccb1@linux.microsoft.com> (raw)
In-Reply-To: <1740076396-15086-3-git-send-email-nunodasneves@linux.microsoft.com>
On 2/20/2025 10:33 AM, Nuno Das Neves wrote:
> Introduce hv_current_partition_type to store the partition type
> as an enum.
>
> Right now this is limited to guest or root partition, but there will
> be other kinds in future and the enum is easily extensible.
>
> Set up hv_current_partition_type early in Hyper-V initialization with
> hv_identify_partition_type(). hv_root_partition() just queries this
> value, and shouldn't be called before that.
>
> Making this check into a function sets the stage for adding a config
> option to gate the compilation of root partition code. In particular,
> hv_root_partition() can be stubbed out always be false if root
> partition support isn't desired.
>
> Signed-off-by: Nuno Das Neves <nunodasneves@linux.microsoft.com>
> ---
> arch/arm64/hyperv/mshyperv.c | 2 ++
> arch/x86/hyperv/hv_init.c | 10 ++++-----
> arch/x86/kernel/cpu/mshyperv.c | 24 ++------------------
> drivers/clocksource/hyperv_timer.c | 4 ++--
> drivers/hv/hv.c | 10 ++++-----
> drivers/hv/hv_common.c | 35 +++++++++++++++++++++++++-----
> drivers/hv/vmbus_drv.c | 2 +-
> drivers/iommu/hyperv-iommu.c | 4 ++--
> include/asm-generic/mshyperv.h | 15 +++++++++++--
> 9 files changed, 61 insertions(+), 45 deletions(-)
Looks good to me.
Reviewed-by: Easwar Hariharan <eahariha@linux.microsoft.com>
next prev parent reply other threads:[~2025-02-20 18:56 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-02-20 18:33 [PATCH v2 0/3] Introduce CONFIG_MSHV_ROOT for root partition code Nuno Das Neves
2025-02-20 18:33 ` [PATCH v2 1/3] hyperv: Convert hypercall statuses to linux error codes Nuno Das Neves
2025-02-20 18:49 ` Easwar Hariharan
2025-02-20 21:59 ` Nuno Das Neves
2025-02-20 19:03 ` Michael Kelley
2025-02-20 21:58 ` Nuno Das Neves
2025-02-20 18:33 ` [PATCH v2 2/3] hyperv: Change hv_root_partition into a function Nuno Das Neves
2025-02-20 18:56 ` Easwar Hariharan [this message]
2025-02-20 19:08 ` Michael Kelley
2025-02-20 19:17 ` Michael Kelley
2025-02-20 21:57 ` Nuno Das Neves
2025-02-20 21:59 ` MUKESH RATHOR
2025-02-20 22:56 ` Easwar Hariharan
2025-02-20 22:59 ` MUKESH RATHOR
2025-02-21 18:10 ` Nuno Das Neves
2025-02-21 18:38 ` Easwar Hariharan
2025-02-21 18:47 ` MUKESH RATHOR
2025-02-20 18:33 ` [PATCH v2 3/3] hyperv: Add CONFIG_MSHV_ROOT to gate root partition support Nuno Das Neves
2025-02-20 19:02 ` Easwar Hariharan
2025-02-20 19:22 ` Michael Kelley
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