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From: Sunil Muthuswamy <sunilmut@microsoft.com>
To: Nuno Das Neves <nunodasneves@linux.microsoft.com>,
	"linux-hyperv@vger.kernel.org" <linux-hyperv@vger.kernel.org>,
	"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>
Cc: "virtualization@lists.linux-foundation.org" 
	<virtualization@lists.linux-foundation.org>,
	Michael Kelley <mikelley@microsoft.com>,
	"viremana@linux.microsoft.com" <viremana@linux.microsoft.com>,
	"wei.liu@kernel.org" <wei.liu@kernel.org>,
	vkuznets <vkuznets@redhat.com>,
	Lillian Grassin-Drake <Lillian.GrassinDrake@microsoft.com>,
	KY Srinivasan <kys@microsoft.com>
Subject: RE: [PATCH 03/19] drivers/hv: minimal mshv module (/dev/mshv/)
Date: Thu, 3 Jun 2021 01:28:08 +0000	[thread overview]
Message-ID: <MW4PR21MB2004EB3380731C8102DB7D16C03C9@MW4PR21MB2004.namprd21.prod.outlook.com> (raw)
In-Reply-To: <1622241819-21155-4-git-send-email-nunodasneves@linux.microsoft.com>

> diff --git a/drivers/hv/Kconfig b/drivers/hv/Kconfig
> index 66c794d92391..d618b1fab2bb 100644
> --- a/drivers/hv/Kconfig
> +++ b/drivers/hv/Kconfig
> @@ -27,4 +27,22 @@ config HYPERV_BALLOON
>  	help
>  	  Select this option to enable Hyper-V Balloon driver.
> 
> +config HYPERV_ROOT_API

A more suitable place to put this would be under the "VIRTUALIZATION"
config menu option, where we have the "KVM" option today.

> +	tristate "Microsoft Hypervisor root partition interfaces: /dev/mshv"
> +	depends on HYPERV
> +	help
> +	  Provides access to interfaces for managing guest virtual machines
> +	  running under the Microsoft Hypervisor.

These are technically not "root" interfaces. As you say it too, these are
interfaces to manage guest VMs. Calling it "HYPERV_ROOT_API" would
be confusing. Something along the lines of "HYPERV_VMM_API" or
"HYPERV_VM_API" seems more appropriate to me.

> new file mode 100644
> index 000000000000..c68cc84fb983
> --- /dev/null
> +++ b/drivers/hv/mshv_main.c
Why not in /virt/hv or something under /virt?

> +static int mshv_dev_open(struct inode *inode, struct file *filp);
> +static int mshv_dev_release(struct inode *inode, struct file *filp);
> +static long mshv_dev_ioctl(struct file *filp, unsigned int ioctl, unsigned long arg);

Do we need to have both 'mshv' & 'dev' in the name? How about just
calling these 'mshv_xyz'? Like you have for init/exit.

> +
> +static struct miscdevice mshv_dev = {
> +	.minor = MISC_DYNAMIC_MINOR,
> +	.name = "mshv",
> +	.fops = &mshv_dev_fops,
> +	.mode = 600,
> +};
For the default mode, I think we want to keep it the same as that for 'kvm'.

- Sunil


  parent reply	other threads:[~2021-06-03  1:28 UTC|newest]

Thread overview: 38+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-05-28 22:43 [PATCH 00/19] Microsoft Hypervisor root partition ioctl interface Nuno Das Neves
2021-05-28 22:43 ` [PATCH 01/19] x86/hyperv: convert hyperv statuses to linux error codes Nuno Das Neves
2021-06-10 18:22   ` Sunil Muthuswamy
2021-05-28 22:43 ` [PATCH 02/19] asm-generic/hyperv: convert hyperv statuses to strings Nuno Das Neves
2021-06-10 18:42   ` Sunil Muthuswamy
2021-06-23 22:15     ` Nuno Das Neves
2021-05-28 22:43 ` [PATCH 03/19] drivers/hv: minimal mshv module (/dev/mshv/) Nuno Das Neves
2021-05-29  0:01   ` Randy Dunlap
2021-06-01 19:45     ` Nuno Das Neves
2021-06-03  1:28   ` Sunil Muthuswamy [this message]
2021-06-23 22:05     ` Nuno Das Neves
2021-06-27 12:00   ` Wei Liu
2021-07-06 15:41     ` Nuno Das Neves
2021-05-28 22:43 ` [PATCH 04/19] drivers/hv: check extension ioctl Nuno Das Neves
2021-05-28 22:43 ` [PATCH 05/19] drivers/hv: create partition ioctl Nuno Das Neves
2021-05-28 22:43 ` [PATCH 06/19] drivers/hv: create, initialize, finalize, delete partition hypercalls Nuno Das Neves
2021-06-01  7:59   ` Wei Liu
2021-06-01 19:52     ` Nuno Das Neves
2021-05-28 22:43 ` [PATCH 07/19] drivers/hv: withdraw memory hypercall Nuno Das Neves
2021-05-28 22:43 ` [PATCH 08/19] drivers/hv: map and unmap guest memory Nuno Das Neves
2021-05-28 22:43 ` [PATCH 09/19] drivers/hv: create vcpu ioctl Nuno Das Neves
2021-05-28 22:43 ` [PATCH 10/19] drivers/hv: get and set vcpu registers ioctls Nuno Das Neves
2021-05-29  4:28   ` kernel test robot
2021-05-28 22:43 ` [PATCH 11/19] drivers/hv: set up synic pages for intercept messages Nuno Das Neves
2021-05-29  5:44   ` kernel test robot
2021-05-28 22:43 ` [PATCH 12/19] drivers/hv: run vp ioctl and isr Nuno Das Neves
2021-05-29 21:55   ` Wei Liu
2021-06-01 19:49     ` Nuno Das Neves
2021-05-28 22:43 ` [PATCH 13/19] drivers/hv: install intercept ioctl Nuno Das Neves
2021-05-28 22:43 ` [PATCH 14/19] drivers/hv: assert interrupt ioctl Nuno Das Neves
2021-05-28 22:43 ` [PATCH 15/19] drivers/hv: get and set vp state ioctls Nuno Das Neves
2021-05-28 22:43 ` [PATCH 16/19] drivers/hv: mmap vp register page Nuno Das Neves
2021-05-28 22:43 ` [PATCH 17/19] drivers/hv: get and set partition property ioctls Nuno Das Neves
2021-05-28 22:43 ` [PATCH 18/19] drivers/hv: Add enlightenment bits to create partition ioctl Nuno Das Neves
2021-05-28 22:43 ` [PATCH 19/19] drivers/hv: Translate GVA to GPA Nuno Das Neves
2021-06-10  9:22 ` [PATCH 00/19] Microsoft Hypervisor root partition ioctl interface Vitaly Kuznetsov
2021-06-23 22:18   ` Nuno Das Neves
2021-08-05 21:23 [PATCH v2 " Nuno Das Neves
2021-08-05 21:23 ` [PATCH 03/19] drivers/hv: minimal mshv module (/dev/mshv/) Nuno Das Neves

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