From: Roman Kisel <romank@linux.microsoft.com>
To: Christoph Hellwig <hch@lst.de>
Cc: Robin Murphy <robin.murphy@arm.com>,
aleksander.lobakin@intel.com, andriy.shevchenko@linux.intel.com,
arnd@arndb.de, bp@alien8.de, catalin.marinas@arm.com,
corbet@lwn.net, dakr@kernel.org, dan.j.williams@intel.com,
dave.hansen@linux.intel.com, decui@microsoft.com,
gregkh@linuxfoundation.org, haiyangz@microsoft.com,
hpa@zytor.com, James.Bottomley@HansenPartnership.com,
Jonathan.Cameron@huawei.com, kys@microsoft.com, leon@kernel.org,
lukas@wunner.de, luto@kernel.org, m.szyprowski@samsung.com,
martin.petersen@oracle.com, mingo@redhat.com,
peterz@infradead.org, quic_zijuhu@quicinc.com,
tglx@linutronix.de, wei.liu@kernel.org, will@kernel.org,
iommu@lists.linux.dev, linux-arch@vger.kernel.org,
linux-arm-kernel@lists.infradead.org, linux-doc@vger.kernel.org,
linux-hyperv@vger.kernel.org, linux-kernel@vger.kernel.org,
linux-scsi@vger.kernel.org, x86@kernel.org, apais@microsoft.com,
benhill@microsoft.com, bperkins@microsoft.com,
sunilmut@microsoft.com, Suzuki K Poulose <suzuki.poulose@arm.com>
Subject: Re: [PATCH hyperv-next 5/6] arch, drivers: Add device struct bitfield to not bounce-buffer
Date: Thu, 10 Apr 2025 08:16:00 -0700 [thread overview]
Message-ID: <e169cb52-8f2d-4ac5-b667-87c3357c11a7@linux.microsoft.com> (raw)
In-Reply-To: <20250410072150.GA32563@lst.de>
On 4/10/2025 12:21 AM, Christoph Hellwig wrote:
> On Wed, Apr 09, 2025 at 09:44:03AM -0700, Roman Kisel wrote:
>> Do you feel this is shoehorned in `struct device`? I couldn't find an
>> appropriate private (== opaque pointer) part in the structure to store
>> that bit (`struct device_private` wouldn't fit the bill) and looked like
>> adding it to the struct itself would do no harm. However, my read of the
>> room is that folks see that as dubious :)
>
> We'll need per-device information. But it is much higher level than a
> need bounce buffer flag.
>
I see, thanks for the explanation!
--
Thank you,
Roman
next prev parent reply other threads:[~2025-04-10 15:16 UTC|newest]
Thread overview: 25+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-04-09 0:08 [PATCH hyperv-next 0/6] Confidential VMBus Roman Kisel
2025-04-09 0:08 ` [PATCH hyperv-next 1/6] Documentation: hyperv: " Roman Kisel
2025-04-10 16:54 ` ALOK TIWARI
2025-04-10 19:10 ` Roman Kisel
2025-04-25 6:31 ` Wei Liu
2025-04-09 0:08 ` [PATCH hyperv-next 2/6] drivers: hyperv: VMBus protocol version 6.0 Roman Kisel
2025-04-10 17:03 ` ALOK TIWARI
2025-04-09 0:08 ` [PATCH hyperv-next 3/6] arch: hyperv: Get/set SynIC synth.registers via paravisor Roman Kisel
2025-04-09 0:08 ` [PATCH hyperv-next 4/6] arch: x86, drivers: hyperv: Enable confidential VMBus Roman Kisel
2025-04-09 0:08 ` [PATCH hyperv-next 5/6] arch, drivers: Add device struct bitfield to not bounce-buffer Roman Kisel
2025-04-09 10:52 ` Christoph Hellwig
2025-04-09 15:27 ` Roman Kisel
2025-04-09 16:03 ` Robin Murphy
2025-04-09 16:44 ` Roman Kisel
2025-04-09 23:30 ` Dan Williams
2025-04-10 1:16 ` Michael Kelley
2025-04-11 0:03 ` Dan Williams
2025-04-10 7:23 ` Christoph Hellwig
2025-04-10 23:44 ` Jason Gunthorpe
2025-04-10 23:50 ` Jason Gunthorpe
2025-04-10 7:21 ` Christoph Hellwig
2025-04-10 15:16 ` Roman Kisel [this message]
2025-04-09 0:08 ` [PATCH hyperv-next 6/6] drivers: SCSI: Do not bounce-bufffer for the confidential VMBus Roman Kisel
2025-04-09 10:53 ` Christoph Hellwig
2025-04-09 15:36 ` Roman Kisel
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