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From: Mark Rutland <mark.rutland@arm.com>
To: Florian Fainelli <f.fainelli@gmail.com>
Cc: linux-arm-kernel@lists.infradead.org,
	"open list:GENERIC INCLUDE/ASM HEADER FILES"
	<linux-arch@vger.kernel.org>, Arnd Bergmann <arnd@arndb.de>,
	Dave Gerlach <d-gerlach@ti.com>, Tony Lindgren <tony@atomide.com>,
	Catalin Marinas <catalin.marinas@arm.com>,
	Will Deacon <will.deacon@arm.com>,
	Russell King <linux@armlinux.org.uk>,
	open list <linux-kernel@vger.kernel.org>,
	bcm-kernel-feedback-list@broadcom.com,
	Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
	Alexandre Belloni <alexandre.belloni@free-electrons.com>,
	linux-omap@vger.kernel.org, Shawn Guo <shawnguo@kernel.org>,
	Keerthy J <j-keerthy@ti.com>
Subject: Re: [PATCH v3 0/4] Generalize fncpy availability
Date: Mon, 19 Jun 2017 13:24:44 +0100	[thread overview]
Message-ID: <20170619122444.GJ10246@leverpostej> (raw)
In-Reply-To: <20170617000744.22158-1-f.fainelli@gmail.com>

On Fri, Jun 16, 2017 at 05:07:40PM -0700, Florian Fainelli wrote:
> Hi all,

Hi Florian,

> This patch series makes ARM's fncpy() implementation more generic (dropping the
> Thumb-specifics) and available in an asm-generic header file.
> 
> Tested on a Broadcom ARM64 STB platform with code that is written to SRAM.
> 
> Changes in v3 (thanks Doug!):
> - correct include guard names in asm-generic/fncpy.h to __ASM_FNCPY_H
> - utilize Kbuild to provide the fncpy.h header on ARM64
> 
> Changes in v2:
> - leave the ARM implementation where it is
> - make the generic truly generic (no)
> 
> This is helpful in making SoC-specific power management code become true drivers
> that can be shared between different architectures.

Could you elaborate on what this is needed for?

My understanding was that on 32-bit, this was to handle idle / suspend
cases, whereas for arm64 that should be handled by PSCI.

what exactly do you intend to use this for?

Thanks,
Mark.

WARNING: multiple messages have this Message-ID (diff)
From: mark.rutland@arm.com (Mark Rutland)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH v3 0/4] Generalize fncpy availability
Date: Mon, 19 Jun 2017 13:24:44 +0100	[thread overview]
Message-ID: <20170619122444.GJ10246@leverpostej> (raw)
In-Reply-To: <20170617000744.22158-1-f.fainelli@gmail.com>

On Fri, Jun 16, 2017 at 05:07:40PM -0700, Florian Fainelli wrote:
> Hi all,

Hi Florian,

> This patch series makes ARM's fncpy() implementation more generic (dropping the
> Thumb-specifics) and available in an asm-generic header file.
> 
> Tested on a Broadcom ARM64 STB platform with code that is written to SRAM.
> 
> Changes in v3 (thanks Doug!):
> - correct include guard names in asm-generic/fncpy.h to __ASM_FNCPY_H
> - utilize Kbuild to provide the fncpy.h header on ARM64
> 
> Changes in v2:
> - leave the ARM implementation where it is
> - make the generic truly generic (no)
> 
> This is helpful in making SoC-specific power management code become true drivers
> that can be shared between different architectures.

Could you elaborate on what this is needed for?

My understanding was that on 32-bit, this was to handle idle / suspend
cases, whereas for arm64 that should be handled by PSCI.

what exactly do you intend to use this for?

Thanks,
Mark.

  parent reply	other threads:[~2017-06-19 12:25 UTC|newest]

Thread overview: 56+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2017-06-17  0:07 [PATCH v3 0/4] Generalize fncpy availability Florian Fainelli
2017-06-17  0:07 ` Florian Fainelli
2017-06-17  0:07 ` Florian Fainelli
2017-06-17  0:07 ` [PATCH v3 1/4] ARM: fncpy: Rename include guards Florian Fainelli
2017-06-17  0:07   ` Florian Fainelli
2017-06-17  0:07   ` Florian Fainelli
2017-06-17  0:07 ` [PATCH v3 2/4] asm-generic: Provide a fncpy() implementation Florian Fainelli
2017-06-17  0:07   ` Florian Fainelli
2017-06-17  0:07   ` Florian Fainelli
2017-06-18 23:51   ` Yury Norov
2017-06-18 23:51     ` Yury Norov
2017-06-18 23:51     ` Yury Norov
2017-06-18 23:51     ` Yury Norov
2017-06-19  1:11     ` Yury Norov
2017-06-19  1:11       ` Yury Norov
2017-06-19 15:18     ` Yury Norov
2017-06-19 15:18       ` Yury Norov
2017-06-19 15:18       ` Yury Norov
2017-06-19 17:27       ` Florian Fainelli
2017-06-19 17:27         ` Florian Fainelli
2017-06-19 17:43       ` Russell King - ARM Linux
2017-06-19 17:43         ` Russell King - ARM Linux
2017-06-20 14:27         ` Yury Norov
2017-06-20 14:27           ` Yury Norov
2017-06-19 20:58     ` Florian Fainelli
2017-06-19 20:58       ` Florian Fainelli
2017-06-20 14:24       ` Yury Norov
2017-06-20 14:24         ` Yury Norov
2017-06-17  0:07 ` [PATCH v3 3/4] arm64: Provide a fncpy implementation Florian Fainelli
2017-06-17  0:07   ` Florian Fainelli
2017-06-17  0:07   ` Florian Fainelli
2017-06-17  0:07 ` [PATCH v3 4/4] misc: sram: Allow ARM64 to select SRAM_EXEC Florian Fainelli
2017-06-17  0:07   ` Florian Fainelli
2017-06-17  0:07   ` Florian Fainelli
2017-06-28 14:55   ` Mark Rutland
2017-06-28 14:55     ` Mark Rutland
2017-06-19 12:24 ` Mark Rutland [this message]
2017-06-19 12:24   ` [PATCH v3 0/4] Generalize fncpy availability Mark Rutland
2017-06-19 13:53   ` Tony Lindgren
2017-06-19 13:53     ` Tony Lindgren
2017-06-19 17:32   ` Florian Fainelli
2017-06-19 17:32     ` Florian Fainelli
2017-06-20  9:10     ` Lorenzo Pieralisi
2017-06-20  9:10       ` Lorenzo Pieralisi
2017-06-20 16:20       ` Florian Fainelli
2017-06-20 16:20         ` Florian Fainelli
2017-06-20 16:46         ` Lorenzo Pieralisi
2017-06-20 16:46           ` Lorenzo Pieralisi
2017-06-20 16:54         ` Sudeep Holla
2017-06-20 16:54           ` Sudeep Holla
2017-06-20 16:54           ` Sudeep Holla
2017-06-20 17:03           ` Florian Fainelli
2017-06-20 17:03             ` Florian Fainelli
2017-06-19 13:34 ` David Howells
2017-06-19 13:34   ` David Howells
2017-06-19 13:34   ` David Howells

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