From: Tianyu Lan <ltykernel@gmail.com>
To: Christoph Hellwig <hch@lst.de>
Cc: kys@microsoft.com, haiyangz@microsoft.com,
sthemmin@microsoft.com, wei.liu@kernel.org, tglx@linutronix.de,
mingo@redhat.com, bp@alien8.de, x86@kernel.org, hpa@zytor.com,
arnd@arndb.de, akpm@linux-foundation.org,
gregkh@linuxfoundation.org, konrad.wilk@oracle.com,
m.szyprowski@samsung.com, robin.murphy@arm.com, joro@8bytes.org,
will@kernel.org, davem@davemloft.net, kuba@kernel.org,
jejb@linux.ibm.com, martin.petersen@oracle.com,
Tianyu Lan <Tianyu.Lan@microsoft.com>,
iommu@lists.linux-foundation.org, linux-arch@vger.kernel.org,
linux-hyperv@vger.kernel.org, linux-kernel@vger.kernel.org,
linux-mm@kvack.org, linux-scsi@vger.kernel.org,
netdev@vger.kernel.org, vkuznets@redhat.com,
thomas.lendacky@amd.com, brijesh.singh@amd.com,
sunilmut@microsoft.com
Subject: Re: [Resend RFC PATCH V2 03/12] x86/Hyper-V: Add new hvcall guest address host visibility support
Date: Thu, 15 Apr 2021 16:13:42 +0800 [thread overview]
Message-ID: <d79e4a79-2259-6a5a-ca7d-3580f6d9dc8f@gmail.com> (raw)
In-Reply-To: <20210414154028.GA32045@lst.de>
Hi Christoph:
Thanks for your review.
On 4/14/2021 11:40 PM, Christoph Hellwig wrote:
>> +/*
>> + * hv_set_mem_host_visibility - Set host visibility for specified memory.
>> + */
>
> I don't think this comment really clarifies anything over the function
> name. What is 'host visibility'
OK. Will update the comment.
>
>> +int hv_set_mem_host_visibility(void *kbuffer, u32 size, u32 visibility)
>
> Should size be a size_t?
> Should visibility be an enum of some kind?
>
Will update.
>> +int hv_mark_gpa_visibility(u16 count, const u64 pfn[], u32 visibility)
>
> Not sure what this does either.
Will add a comment.
>
>> + local_irq_save(flags);
>> + input_pcpu = (struct hv_input_modify_sparse_gpa_page_host_visibility **)
>
> Is there a chance we could find a shorter but still descriptive
> name for this variable? Why do we need the cast?
Sure. The cast is to avoid build error due to "incompatible-pointer-types"
>
>> +#define VMBUS_PAGE_VISIBLE_READ_ONLY HV_MAP_GPA_READABLE
>> +#define VMBUS_PAGE_VISIBLE_READ_WRITE (HV_MAP_GPA_READABLE|HV_MAP_GPA_WRITABLE)
>
> pointlessly overlong line.
>
next prev parent reply other threads:[~2021-04-15 8:13 UTC|newest]
Thread overview: 34+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-04-14 14:49 [Resend RFC PATCH V2 00/12] x86/Hyper-V: Add Hyper-V Isolation VM support Tianyu Lan
2021-04-14 14:49 ` [Resend RFC PATCH V2 01/12] x86/HV: Initialize GHCB page in Isolation VM Tianyu Lan
2021-04-14 14:49 ` [Resend RFC PATCH V2 02/12] x86/HV: Initialize shared memory boundary " Tianyu Lan
2021-04-14 14:49 ` [Resend RFC PATCH V2 03/12] x86/Hyper-V: Add new hvcall guest address host visibility support Tianyu Lan
2021-04-14 15:40 ` Christoph Hellwig
2021-04-15 8:13 ` Tianyu Lan [this message]
2021-04-14 14:49 ` [Resend RFC PATCH V2 04/12] HV: Add Write/Read MSR registers via ghcb Tianyu Lan
2021-04-14 15:41 ` Christoph Hellwig
2021-04-15 8:19 ` Tianyu Lan
2021-04-15 18:11 ` Konrad Rzeszutek Wilk
2021-04-14 14:49 ` [Resend RFC PATCH V2 05/12] HV: Add ghcb hvcall support for SNP VM Tianyu Lan
2021-04-14 14:49 ` [Resend RFC PATCH V2 06/12] HV/Vmbus: Add SNP support for VMbus channel initiate message Tianyu Lan
2021-04-15 18:52 ` Konrad Rzeszutek Wilk
2021-04-14 14:49 ` [Resend RFC PATCH V2 07/12] HV/Vmbus: Initialize VMbus ring buffer for Isolation VM Tianyu Lan
2021-04-15 20:24 ` Konrad Rzeszutek Wilk
2021-04-19 6:36 ` Christoph Hellwig
2021-04-14 14:49 ` [Resend RFC PATCH V2 08/12] UIO/Hyper-V: Not load UIO HV driver in the isolation VM Tianyu Lan
2021-04-14 15:42 ` Christoph Hellwig
2021-04-14 15:45 ` Greg KH
2021-04-14 16:17 ` Stephen Hemminger
2021-04-15 12:54 ` Tianyu Lan
2021-04-15 13:09 ` Tianyu Lan
2021-04-14 14:49 ` [Resend RFC PATCH V2 09/12] swiotlb: Add bounce buffer remap address setting function Tianyu Lan
2021-04-15 20:28 ` Konrad Rzeszutek Wilk
2021-04-14 14:49 ` [Resend RFC PATCH V2 10/12] HV/IOMMU: Add Hyper-V dma ops support Tianyu Lan
2021-04-14 15:47 ` Christoph Hellwig
2021-05-12 16:01 ` Tianyu Lan
2021-05-12 17:29 ` Robin Murphy
2021-05-13 3:19 ` Lu Baolu
2021-04-14 14:49 ` [Resend RFC PATCH V2 11/12] HV/Netvsc: Add Isolation VM support for netvsc driver Tianyu Lan
2021-04-14 15:50 ` Christoph Hellwig
2021-04-15 8:39 ` Tianyu Lan
2021-04-14 14:49 ` [Resend RFC PATCH V2 12/12] HV/Storvsc: Add Isolation VM support for storvsc driver Tianyu Lan
2021-04-14 15:51 ` Christoph Hellwig
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