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From: Boqun Feng <boqun.feng@gmail.com>
To: Nuno Das Neves <nunodasneves@linux.microsoft.com>
Cc: linux-hyperv@vger.kernel.org, linux-kernel@vger.kernel.org,
	x86@kernel.org, linux-arm-kernel@lists.infradead.org,
	linux-arch@vger.kernel.org, patches@lists.linux.dev,
	mikelley@microsoft.com, kys@microsoft.com, wei.liu@kernel.org,
	haiyangz@microsoft.com, decui@microsoft.com,
	apais@linux.microsoft.com, Tianyu.Lan@microsoft.com,
	ssengar@linux.microsoft.com, mukeshrathor@microsoft.com,
	stanislav.kinsburskiy@gmail.com, jinankjain@linux.microsoft.com,
	vkuznets@redhat.com, tglx@linutronix.de, mingo@redhat.com,
	bp@alien8.de, dave.hansen@linux.intel.com, hpa@zytor.com,
	will@kernel.org, catalin.marinas@arm.com
Subject: Re: [PATCH v2 15/15] Drivers: hv: Add modules to expose /dev/mshv to VMMs running on Hyper-V
Date: Thu, 24 Aug 2023 11:31:23 -0700	[thread overview]
Message-ID: <ZOeh-4pFgil54iyx@boqun-archlinux> (raw)
In-Reply-To: <1692309711-5573-16-git-send-email-nunodasneves@linux.microsoft.com>

On Thu, Aug 17, 2023 at 03:01:51PM -0700, Nuno Das Neves wrote:
[...]
> +static long
> +mshv_dev_ioctl(struct file *filp, unsigned int ioctl, unsigned long arg)
> +{
> +	switch (ioctl) {
> +	case MSHV_CHECK_EXTENSION:
> +		return mshv_ioctl_check_extension((void __user *)arg);
> +	case MSHV_CREATE_PARTITION:
> +		return mshv.create_partition((void __user *)arg);
> +	case MSHV_CREATE_VTL:
> +		return mshv.create_vtl((void __user *)arg);
> +	}
> +

Shouldn't we also have a MSHV_GET_API_VERSION ioctl similar as KVM? So
that in the future when we change these ioctl interfaces or semantics,
we can bump up the API version to avoid breaking userspace?

Regards,
Boqun

  parent reply	other threads:[~2023-08-24 18:32 UTC|newest]

Thread overview: 46+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2023-08-17 22:01 [PATCH v2 00/15] Introduce /dev/mshv drivers Nuno Das Neves
2023-08-17 22:01 ` [PATCH v2 01/15] hyperv-tlfs: Change shared HV_REGISTER_* defines to HV_MSR_* Nuno Das Neves
2023-08-18 18:45   ` Wei Liu
2023-08-17 22:01 ` [PATCH v2 02/15] mshyperv: Introduce hv_get_hypervisor_version function Nuno Das Neves
2023-08-17 23:14   ` Dave Hansen
2023-08-17 23:43     ` Nuno Das Neves
2023-08-17 22:01 ` [PATCH v2 03/15] mshyperv: Introduce numa_node_to_proximity_domain_info Nuno Das Neves
2023-08-17 23:22   ` Dave Hansen
2023-08-18  0:17     ` Nuno Das Neves
2023-08-18  0:26       ` Dave Hansen
2023-08-17 22:01 ` [PATCH v2 04/15] asm-generic/mshyperv: Introduce hv_recommend_using_aeoi() Nuno Das Neves
2023-08-17 22:01 ` [PATCH v2 05/15] hyperv: Move hv_connection_id to hyperv-tlfs Nuno Das Neves
2023-08-18 23:22   ` Wei Liu
2023-08-17 22:01 ` [PATCH v2 06/15] hyperv-tlfs: Introduce hv_status_to_string and hv_status_to_errno Nuno Das Neves
2023-08-18 23:23   ` Wei Liu
2023-08-17 22:01 ` [PATCH v2 07/15] Drivers: hv: Move hv_call_deposit_pages and hv_call_create_vp to common code Nuno Das Neves
2023-08-17 22:01 ` [PATCH v2 08/15] Drivers: hv: Introduce per-cpu event ring tail Nuno Das Neves
2023-08-18 23:26   ` Wei Liu
2023-08-17 22:01 ` [PATCH v2 09/15] Drivers: hv: Introduce hv_output_arg_exists in hv_common.c Nuno Das Neves
2023-08-18 23:23   ` Wei Liu
2023-08-17 22:01 ` [PATCH v2 10/15] x86: hyperv: Add mshv_handler irq handler and setup function Nuno Das Neves
2023-08-29  7:47   ` Tianyu Lan
2023-08-17 22:01 ` [PATCH v2 11/15] Drivers: hv: export vmbus_isr, hv_context and hv_post_message Nuno Das Neves
2023-08-17 22:01 ` [PATCH v2 12/15] Documentation: Reserve ioctl number for mshv driver Nuno Das Neves
2023-08-18 23:24   ` Wei Liu
2023-08-17 22:01 ` [PATCH v2 13/15] uapi: hyperv: Add mshv driver headers hvhdk.h, hvhdk_mini.h, hvgdk.h, hvgdk_mini.h Nuno Das Neves
2023-08-17 23:01   ` Wei Liu
2023-08-19 10:26     ` Greg KH
2023-08-25 18:24       ` Nuno Das Neves
2023-10-10 22:49         ` Nuno Das Neves
2023-10-11  6:42           ` Greg KH
2023-10-12  1:56             ` Nuno Das Neves
2023-08-17 22:01 ` [PATCH v2 14/15] asm-generic: hyperv: Use mshv headers conditionally. Add asm-generic/hyperv-defs.h Nuno Das Neves
2023-08-18 23:30   ` Wei Liu
2023-08-17 22:01 ` [PATCH v2 15/15] Drivers: hv: Add modules to expose /dev/mshv to VMMs running on Hyper-V Nuno Das Neves
2023-08-18 13:08   ` Saurabh Singh Sengar
2023-08-18 18:59     ` Nuno Das Neves
2023-08-20  5:19       ` Saurabh Singh Sengar
2023-08-22 20:18         ` Nuno Das Neves
2023-08-23  7:40           ` Saurabh Singh Sengar
2023-08-25 18:26             ` Nuno Das Neves
2023-08-21 18:18   ` Saurabh Singh Sengar
2023-08-22 21:00     ` Nuno Das Neves
2023-08-24 18:31   ` Boqun Feng [this message]
2023-08-25 18:41     ` Nuno Das Neves
2023-08-25 20:15       ` Boqun Feng

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