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From: Stafford Horne <shorne@gmail.com>
To: David Laight <David.Laight@aculab.com>
Cc: Arnd Bergmann <arnd@arndb.de>,
	Christoph Hellwig <hch@infradead.org>,
	LKML <linux-kernel@vger.kernel.org>,
	Catalin Marinas <catalin.marinas@arm.com>,
	Will Deacon <will@kernel.org>, Guo Ren <guoren@kernel.org>,
	Paul Walmsley <paul.walmsley@sifive.com>,
	Palmer Dabbelt <palmer@dabbelt.com>,
	Albert Ou <aou@eecs.berkeley.edu>,
	Richard Weinberger <richard@nod.at>,
	Anton Ivanov <anton.ivanov@cambridgegreys.com>,
	Johannes Berg <johannes@sipsolutions.net>,
	Bjorn Helgaas <bhelgaas@google.com>,
	Linux ARM <linux-arm-kernel@lists.infradead.org>,
	"linux-csky@vger.kernel.org" <linux-csky@vger.kernel.org>,
	linux-riscv <linux-riscv@lists.infradead.org>,
	linux-um <linux-um@lists.infradead.org>,
	linux-pci <linux-pci@vger.kernel.org>,
	linux-arch <linux-arch@vger.kernel.org>
Subject: Re: [PATCH v2 2/2] asm-generic: Add new pci.h and use it
Date: Wed, 20 Jul 2022 22:24:01 +0900	[thread overview]
Message-ID: <YtgB8SDLB4d0adfB@antec> (raw)
In-Reply-To: <874af766883a4c0da6759eff433ec6d6@AcuMS.aculab.com>

On Tue, Jul 19, 2022 at 03:09:35PM +0000, David Laight wrote:
> From: Stafford Horne
> > Sent: 19 July 2022 13:24
> > 
> > On Tue, Jul 19, 2022 at 01:55:03PM +0200, Arnd Bergmann wrote:
> > > On Tue, Jul 19, 2022 at 12:55 PM Stafford Horne <shorne@gmail.com> wrote:

> > Option 3:
> > 
> > > Or we could try to keep the generic definition in a global header
> > > like linux/isa-dma.h.
> > 
> > Perhaps option 3 makes the whole patch the most clean.
> 
> Isn't there a define that can be used inside an if?
> So you could do:
> 		if (!IS_CONFIG_X86_32 || !isa_dma_bridge_buggy)
> 			disable_dma();
> (but I can't remember the name!)

I think you probably mean:

  if (IS_ENABLED(CONFIG_X86_32) ... )

That could work too, but we still want to move the definition of
isa_dma_bridge_buggy out of architectures and into the global header.  I have
gone with option 3 for now.

-Stafford

WARNING: multiple messages have this Message-ID (diff)
From: Stafford Horne <shorne@gmail.com>
To: David Laight <David.Laight@aculab.com>
Cc: Arnd Bergmann <arnd@arndb.de>,
	Christoph Hellwig <hch@infradead.org>,
	LKML <linux-kernel@vger.kernel.org>,
	Catalin Marinas <catalin.marinas@arm.com>,
	Will Deacon <will@kernel.org>, Guo Ren <guoren@kernel.org>,
	Paul Walmsley <paul.walmsley@sifive.com>,
	Palmer Dabbelt <palmer@dabbelt.com>,
	Albert Ou <aou@eecs.berkeley.edu>,
	Richard Weinberger <richard@nod.at>,
	Anton Ivanov <anton.ivanov@cambridgegreys.com>,
	Johannes Berg <johannes@sipsolutions.net>,
	Bjorn Helgaas <bhelgaas@google.com>,
	Linux ARM <linux-arm-kernel@lists.infradead.org>,
	"linux-csky@vger.kernel.org" <linux-csky@vger.kernel.org>,
	linux-riscv <linux-riscv@lists.infradead.org>,
	linux-um <linux-um@lists.infradead.org>,
	linux-pci <linux-pci@vger.kernel.org>,
	linux-arch <linux-arch@vger.kernel.org>
Subject: Re: [PATCH v2 2/2] asm-generic: Add new pci.h and use it
Date: Wed, 20 Jul 2022 22:24:01 +0900	[thread overview]
Message-ID: <YtgB8SDLB4d0adfB@antec> (raw)
In-Reply-To: <874af766883a4c0da6759eff433ec6d6@AcuMS.aculab.com>

On Tue, Jul 19, 2022 at 03:09:35PM +0000, David Laight wrote:
> From: Stafford Horne
> > Sent: 19 July 2022 13:24
> > 
> > On Tue, Jul 19, 2022 at 01:55:03PM +0200, Arnd Bergmann wrote:
> > > On Tue, Jul 19, 2022 at 12:55 PM Stafford Horne <shorne@gmail.com> wrote:

> > Option 3:
> > 
> > > Or we could try to keep the generic definition in a global header
> > > like linux/isa-dma.h.
> > 
> > Perhaps option 3 makes the whole patch the most clean.
> 
> Isn't there a define that can be used inside an if?
> So you could do:
> 		if (!IS_CONFIG_X86_32 || !isa_dma_bridge_buggy)
> 			disable_dma();
> (but I can't remember the name!)

I think you probably mean:

  if (IS_ENABLED(CONFIG_X86_32) ... )

That could work too, but we still want to move the definition of
isa_dma_bridge_buggy out of architectures and into the global header.  I have
gone with option 3 for now.

-Stafford

_______________________________________________
linux-riscv mailing list
linux-riscv@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-riscv

WARNING: multiple messages have this Message-ID (diff)
From: Stafford Horne <shorne@gmail.com>
To: David Laight <David.Laight@aculab.com>
Cc: Arnd Bergmann <arnd@arndb.de>,
	Christoph Hellwig <hch@infradead.org>,
	LKML <linux-kernel@vger.kernel.org>,
	Catalin Marinas <catalin.marinas@arm.com>,
	Will Deacon <will@kernel.org>, Guo Ren <guoren@kernel.org>,
	Paul Walmsley <paul.walmsley@sifive.com>,
	Palmer Dabbelt <palmer@dabbelt.com>,
	Albert Ou <aou@eecs.berkeley.edu>,
	Richard Weinberger <richard@nod.at>,
	Anton Ivanov <anton.ivanov@cambridgegreys.com>,
	Johannes Berg <johannes@sipsolutions.net>,
	Bjorn Helgaas <bhelgaas@google.com>,
	Linux ARM <linux-arm-kernel@lists.infradead.org>,
	"linux-csky@vger.kernel.org" <linux-csky@vger.kernel.org>,
	linux-riscv <linux-riscv@lists.infradead.org>,
	linux-um <linux-um@lists.infradead.org>,
	linux-pci <linux-pci@vger.kernel.org>,
	linux-arch <linux-arch@vger.kernel.org>
Subject: Re: [PATCH v2 2/2] asm-generic: Add new pci.h and use it
Date: Wed, 20 Jul 2022 22:24:01 +0900	[thread overview]
Message-ID: <YtgB8SDLB4d0adfB@antec> (raw)
In-Reply-To: <874af766883a4c0da6759eff433ec6d6@AcuMS.aculab.com>

On Tue, Jul 19, 2022 at 03:09:35PM +0000, David Laight wrote:
> From: Stafford Horne
> > Sent: 19 July 2022 13:24
> > 
> > On Tue, Jul 19, 2022 at 01:55:03PM +0200, Arnd Bergmann wrote:
> > > On Tue, Jul 19, 2022 at 12:55 PM Stafford Horne <shorne@gmail.com> wrote:

> > Option 3:
> > 
> > > Or we could try to keep the generic definition in a global header
> > > like linux/isa-dma.h.
> > 
> > Perhaps option 3 makes the whole patch the most clean.
> 
> Isn't there a define that can be used inside an if?
> So you could do:
> 		if (!IS_CONFIG_X86_32 || !isa_dma_bridge_buggy)
> 			disable_dma();
> (but I can't remember the name!)

I think you probably mean:

  if (IS_ENABLED(CONFIG_X86_32) ... )

That could work too, but we still want to move the definition of
isa_dma_bridge_buggy out of architectures and into the global header.  I have
gone with option 3 for now.

-Stafford

_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel

WARNING: multiple messages have this Message-ID (diff)
From: Stafford Horne <shorne@gmail.com>
To: David Laight <David.Laight@aculab.com>
Cc: Arnd Bergmann <arnd@arndb.de>,
	Christoph Hellwig <hch@infradead.org>,
	LKML <linux-kernel@vger.kernel.org>,
	Catalin Marinas <catalin.marinas@arm.com>,
	Will Deacon <will@kernel.org>, Guo Ren <guoren@kernel.org>,
	Paul Walmsley <paul.walmsley@sifive.com>,
	Palmer Dabbelt <palmer@dabbelt.com>,
	Albert Ou <aou@eecs.berkeley.edu>,
	Richard Weinberger <richard@nod.at>,
	Anton Ivanov <anton.ivanov@cambridgegreys.com>,
	Johannes Berg <johannes@sipsolutions.net>,
	Bjorn Helgaas <bhelgaas@google.com>,
	Linux ARM <linux-arm-kernel@lists.infradead.org>,
	"linux-csky@vger.kernel.org" <linux-csky@vger.kernel.org>,
	linux-riscv <linux-riscv@lists.infradead.org>,
	linux-um <linux-um@lists.infradead.org>,
	linux-pci <linux-pci@vger.kernel.org>,
	linux-arch <linux-arch@vger.kernel.org>
Subject: Re: [PATCH v2 2/2] asm-generic: Add new pci.h and use it
Date: Wed, 20 Jul 2022 22:24:01 +0900	[thread overview]
Message-ID: <YtgB8SDLB4d0adfB@antec> (raw)
In-Reply-To: <874af766883a4c0da6759eff433ec6d6@AcuMS.aculab.com>

On Tue, Jul 19, 2022 at 03:09:35PM +0000, David Laight wrote:
> From: Stafford Horne
> > Sent: 19 July 2022 13:24
> > 
> > On Tue, Jul 19, 2022 at 01:55:03PM +0200, Arnd Bergmann wrote:
> > > On Tue, Jul 19, 2022 at 12:55 PM Stafford Horne <shorne@gmail.com> wrote:

> > Option 3:
> > 
> > > Or we could try to keep the generic definition in a global header
> > > like linux/isa-dma.h.
> > 
> > Perhaps option 3 makes the whole patch the most clean.
> 
> Isn't there a define that can be used inside an if?
> So you could do:
> 		if (!IS_CONFIG_X86_32 || !isa_dma_bridge_buggy)
> 			disable_dma();
> (but I can't remember the name!)

I think you probably mean:

  if (IS_ENABLED(CONFIG_X86_32) ... )

That could work too, but we still want to move the definition of
isa_dma_bridge_buggy out of architectures and into the global header.  I have
gone with option 3 for now.

-Stafford

_______________________________________________
linux-um mailing list
linux-um@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-um


  reply	other threads:[~2022-07-20 13:24 UTC|newest]

Thread overview: 85+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-07-17  3:34 [PATCH v2 0/2] Updates for asm-generic/pci.h Stafford Horne
2022-07-17  3:34 ` Stafford Horne
2022-07-17  3:34 ` [PATCH v2 1/2] asm-generic: Remove pci.h copying remaining code to x86 Stafford Horne
2022-07-17  3:34   ` Stafford Horne
2022-07-17  3:34   ` Stafford Horne
2022-07-17  3:34   ` Stafford Horne
2022-07-17  3:34   ` Stafford Horne
2022-07-17  9:23   ` Geert Uytterhoeven
2022-07-17  9:23     ` Geert Uytterhoeven
2022-07-17  9:23     ` Geert Uytterhoeven
2022-07-17  9:23     ` Geert Uytterhoeven
2022-07-17  9:23     ` Geert Uytterhoeven
2022-07-17  9:42     ` Stafford Horne
2022-07-17  9:42       ` Stafford Horne
2022-07-18  4:33   ` Christoph Hellwig
2022-07-18  4:33     ` Christoph Hellwig
2022-07-18  4:33     ` Christoph Hellwig
2022-07-18  4:33     ` Christoph Hellwig
2022-07-18  4:33     ` Christoph Hellwig
2022-07-18  8:40     ` Arnd Bergmann
2022-07-18  8:40       ` Arnd Bergmann
2022-07-18  8:40       ` Arnd Bergmann
2022-07-18  8:40       ` Arnd Bergmann
2022-07-18  8:40       ` Arnd Bergmann
2022-07-19 10:51       ` Stafford Horne
2022-07-19 10:51         ` Stafford Horne
2022-07-19 10:51         ` Stafford Horne
2022-07-19 10:51         ` Stafford Horne
2022-07-19 10:51         ` Stafford Horne
2022-07-17  3:34 ` [PATCH v2 2/2] asm-generic: Add new pci.h and use it Stafford Horne
2022-07-17  3:34   ` Stafford Horne
2022-07-17  3:34   ` Stafford Horne
2022-07-17  3:34   ` Stafford Horne
2022-07-18  4:37   ` Christoph Hellwig
2022-07-18  4:37     ` Christoph Hellwig
2022-07-18  4:37     ` Christoph Hellwig
2022-07-18  4:37     ` Christoph Hellwig
2022-07-18  6:56     ` Arnd Bergmann
2022-07-18  6:56       ` Arnd Bergmann
2022-07-18  6:56       ` Arnd Bergmann
2022-07-18  6:56       ` Arnd Bergmann
     [not found]       ` <CAAfxs740yz1vJmtFHOPTXT6fqi0+37SR_OhoGsONe4mx_21+_g@mail.gmail.com>
2022-07-19  7:45         ` Arnd Bergmann
2022-07-19  7:45           ` Arnd Bergmann
2022-07-19  7:45           ` Arnd Bergmann
2022-07-19  7:45           ` Arnd Bergmann
2022-07-19 10:55           ` Stafford Horne
2022-07-19 10:55             ` Stafford Horne
2022-07-19 10:55             ` Stafford Horne
2022-07-19 10:55             ` Stafford Horne
2022-07-19 11:55             ` Arnd Bergmann
2022-07-19 11:55               ` Arnd Bergmann
2022-07-19 11:55               ` Arnd Bergmann
2022-07-19 11:55               ` Arnd Bergmann
2022-07-19 12:23               ` Stafford Horne
2022-07-19 12:23                 ` Stafford Horne
2022-07-19 12:23                 ` Stafford Horne
2022-07-19 12:23                 ` Stafford Horne
2022-07-19 13:05                 ` Stafford Horne
2022-07-19 13:05                   ` Stafford Horne
2022-07-19 13:05                   ` Stafford Horne
2022-07-19 13:05                   ` Stafford Horne
2022-07-19 13:18                   ` Arnd Bergmann
2022-07-19 13:18                     ` Arnd Bergmann
2022-07-19 13:18                     ` Arnd Bergmann
2022-07-19 13:18                     ` Arnd Bergmann
2022-07-19 13:33                     ` Stafford Horne
2022-07-19 13:33                       ` Stafford Horne
2022-07-19 13:33                       ` Stafford Horne
2022-07-19 13:33                       ` Stafford Horne
2022-07-19 14:32                   ` Christoph Hellwig
2022-07-19 14:32                     ` Christoph Hellwig
2022-07-19 14:32                     ` Christoph Hellwig
2022-07-19 14:32                     ` Christoph Hellwig
2022-07-20 13:21                     ` Stafford Horne
2022-07-20 13:21                       ` Stafford Horne
2022-07-20 13:21                       ` Stafford Horne
2022-07-20 13:21                       ` Stafford Horne
2022-07-19 15:09                 ` David Laight
2022-07-19 15:09                   ` David Laight
2022-07-19 15:09                   ` David Laight
2022-07-19 15:09                   ` David Laight
2022-07-20 13:24                   ` Stafford Horne [this message]
2022-07-20 13:24                     ` Stafford Horne
2022-07-20 13:24                     ` Stafford Horne
2022-07-20 13:24                     ` Stafford Horne

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