From: Christoph Hellwig <hch@lst.de>
To: Alexey Kardashevskiy <aik@ozlabs.ru>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
Robin Murphy <robin.murphy@arm.com>,
linux-kernel@vger.kernel.org, iommu@lists.linux-foundation.org,
Michael Ellerman <mpe@ellerman.id.au>,
linuxppc-dev@lists.ozlabs.org, Christoph Hellwig <hch@lst.de>
Subject: Re: [PATCH 1/4] dma-mapping: move the remaining DMA API calls out of line
Date: Fri, 17 Apr 2020 09:58:52 +0200 [thread overview]
Message-ID: <20200417075852.GA20049@lst.de> (raw)
In-Reply-To: <5139e8e1-6389-3387-dc39-6983b08ff28d@ozlabs.ru>
On Wed, Apr 15, 2020 at 09:21:37PM +1000, Alexey Kardashevskiy wrote:
> And the fact they were exported leaves possibility that there is a
> driver somewhere relying on these symbols or distro kernel won't build
> because the symbol disappeared from exports (I do not know what KABI
> guarantees or if mainline kernel cares).
We absolutely do not care. In fact for abuses of APIs that drivers
should not use we almost care to make them private and break people
abusing them.
> I do not care in particular but
> some might, a line separated with empty lines in the commit log would do.
I'll add a blurb for the next version.
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WARNING: multiple messages have this Message-ID (diff)
From: Christoph Hellwig <hch@lst.de>
To: Alexey Kardashevskiy <aik@ozlabs.ru>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
Joerg Roedel <joro@8bytes.org>,
Robin Murphy <robin.murphy@arm.com>,
linux-kernel@vger.kernel.org, iommu@lists.linux-foundation.org,
linuxppc-dev@lists.ozlabs.org, Christoph Hellwig <hch@lst.de>,
Lu Baolu <baolu.lu@linux.intel.com>
Subject: Re: [PATCH 1/4] dma-mapping: move the remaining DMA API calls out of line
Date: Fri, 17 Apr 2020 09:58:52 +0200 [thread overview]
Message-ID: <20200417075852.GA20049@lst.de> (raw)
In-Reply-To: <5139e8e1-6389-3387-dc39-6983b08ff28d@ozlabs.ru>
On Wed, Apr 15, 2020 at 09:21:37PM +1000, Alexey Kardashevskiy wrote:
> And the fact they were exported leaves possibility that there is a
> driver somewhere relying on these symbols or distro kernel won't build
> because the symbol disappeared from exports (I do not know what KABI
> guarantees or if mainline kernel cares).
We absolutely do not care. In fact for abuses of APIs that drivers
should not use we almost care to make them private and break people
abusing them.
> I do not care in particular but
> some might, a line separated with empty lines in the commit log would do.
I'll add a blurb for the next version.
WARNING: multiple messages have this Message-ID (diff)
From: Christoph Hellwig <hch@lst.de>
To: Alexey Kardashevskiy <aik@ozlabs.ru>
Cc: Christoph Hellwig <hch@lst.de>,
iommu@lists.linux-foundation.org, linuxppc-dev@lists.ozlabs.org,
Lu Baolu <baolu.lu@linux.intel.com>,
Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
Joerg Roedel <joro@8bytes.org>,
Robin Murphy <robin.murphy@arm.com>,
linux-kernel@vger.kernel.org,
Michael Ellerman <mpe@ellerman.id.au>
Subject: Re: [PATCH 1/4] dma-mapping: move the remaining DMA API calls out of line
Date: Fri, 17 Apr 2020 09:58:52 +0200 [thread overview]
Message-ID: <20200417075852.GA20049@lst.de> (raw)
In-Reply-To: <5139e8e1-6389-3387-dc39-6983b08ff28d@ozlabs.ru>
On Wed, Apr 15, 2020 at 09:21:37PM +1000, Alexey Kardashevskiy wrote:
> And the fact they were exported leaves possibility that there is a
> driver somewhere relying on these symbols or distro kernel won't build
> because the symbol disappeared from exports (I do not know what KABI
> guarantees or if mainline kernel cares).
We absolutely do not care. In fact for abuses of APIs that drivers
should not use we almost care to make them private and break people
abusing them.
> I do not care in particular but
> some might, a line separated with empty lines in the commit log would do.
I'll add a blurb for the next version.
next prev parent reply other threads:[~2020-04-17 7:59 UTC|newest]
Thread overview: 60+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-04-14 12:25 generic DMA bypass flag v3 Christoph Hellwig
2020-04-14 12:25 ` Christoph Hellwig
2020-04-14 12:25 ` Christoph Hellwig
2020-04-14 12:25 ` [PATCH 1/4] dma-mapping: move the remaining DMA API calls out of line Christoph Hellwig
2020-04-14 12:25 ` Christoph Hellwig
2020-04-14 12:25 ` Christoph Hellwig
2020-04-15 2:26 ` Alexey Kardashevskiy
2020-04-15 2:26 ` Alexey Kardashevskiy
2020-04-15 2:26 ` Alexey Kardashevskiy
2020-04-15 6:18 ` Christoph Hellwig
2020-04-15 6:18 ` Christoph Hellwig
2020-04-15 6:18 ` Christoph Hellwig
2020-04-15 11:21 ` Alexey Kardashevskiy
2020-04-15 11:21 ` Alexey Kardashevskiy
2020-04-15 11:21 ` Alexey Kardashevskiy
2020-04-17 7:58 ` Christoph Hellwig [this message]
2020-04-17 7:58 ` Christoph Hellwig
2020-04-17 7:58 ` Christoph Hellwig
2020-05-05 4:18 ` Alexey Kardashevskiy
2020-05-05 4:18 ` Alexey Kardashevskiy
2020-05-05 4:18 ` Alexey Kardashevskiy
2020-05-09 8:19 ` Christoph Hellwig
2020-05-09 8:19 ` Christoph Hellwig
2020-05-09 8:19 ` Christoph Hellwig
2020-05-09 14:07 ` Alexey Kardashevskiy
2020-05-09 14:07 ` Alexey Kardashevskiy
2020-05-09 14:07 ` Alexey Kardashevskiy
2020-06-03 4:13 ` Alexey Kardashevskiy
2020-06-03 4:13 ` Alexey Kardashevskiy
2020-06-03 4:13 ` Alexey Kardashevskiy
2020-07-07 0:43 ` Alexey Kardashevskiy
2020-07-07 0:43 ` Alexey Kardashevskiy
2020-07-07 0:43 ` Alexey Kardashevskiy
2020-07-07 14:51 ` Christoph Hellwig
2020-07-07 14:51 ` Christoph Hellwig
2020-07-07 14:51 ` Christoph Hellwig
2020-04-14 12:25 ` [PATCH 2/4] dma-mapping: inline the fast path dma-direct calls Christoph Hellwig
2020-04-14 12:25 ` Christoph Hellwig
2020-04-14 12:25 ` Christoph Hellwig
2020-04-14 12:25 ` [PATCH 3/4] dma-mapping: add a dma_ops_bypass flag to struct device Christoph Hellwig
2020-04-14 12:25 ` Christoph Hellwig
2020-04-14 12:25 ` Christoph Hellwig
2020-04-14 12:47 ` Greg Kroah-Hartman
2020-04-14 12:47 ` Greg Kroah-Hartman
2020-04-14 12:47 ` Greg Kroah-Hartman
2020-04-18 12:42 ` Joerg Roedel
2020-04-18 12:42 ` Joerg Roedel
2020-04-18 12:42 ` Joerg Roedel
2020-04-19 8:00 ` Christoph Hellwig
2020-04-19 8:00 ` Christoph Hellwig
2020-04-19 8:00 ` Christoph Hellwig
2020-04-19 12:25 ` Joerg Roedel
2020-04-19 12:25 ` Joerg Roedel
2020-04-19 12:25 ` Joerg Roedel
2020-04-19 14:46 ` Alexey Kardashevskiy
2020-04-19 14:46 ` Alexey Kardashevskiy
2020-04-19 14:46 ` Alexey Kardashevskiy
2020-04-14 12:25 ` [PATCH 4/4] powerpc: use the generic dma_ops_bypass mode Christoph Hellwig
2020-04-14 12:25 ` Christoph Hellwig
2020-04-14 12:25 ` Christoph Hellwig
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