Re: [RFC PATCH 0/5] Add smp booting support for Qualcomm ARMv8 SoCs

2015-04-16 Thread Catalin Marinas
On Wed, Apr 15, 2015 at 11:01:17AM -0400, Rob Clark wrote: On Wed, Apr 15, 2015 at 9:34 AM, Catalin Marinas catalin.mari...@arm.com wrote: On Tue, Apr 14, 2015 at 05:48:48PM -0400, Rob Clark wrote: Just speaking as an outsider to this topic, but seems like most/all tablets/phones/etc ship

Re: [RFC PATCH 0/5] Add smp booting support for Qualcomm ARMv8 SoCs

2015-04-16 Thread Rob Clark
On Thu, Apr 16, 2015 at 11:21 AM, Catalin Marinas catalin.mari...@arm.com wrote: On Wed, Apr 15, 2015 at 11:01:17AM -0400, Rob Clark wrote: On Wed, Apr 15, 2015 at 9:34 AM, Catalin Marinas catalin.mari...@arm.com wrote: On Tue, Apr 14, 2015 at 05:48:48PM -0400, Rob Clark wrote: Just

Re: [RFC PATCH 0/5] Add smp booting support for Qualcomm ARMv8 SoCs

2015-04-16 Thread Catalin Marinas
On Thu, Apr 16, 2015 at 01:17:32PM -0400, Rob Clark wrote: On Thu, Apr 16, 2015 at 11:21 AM, Catalin Marinas catalin.mari...@arm.com wrote: On Wed, Apr 15, 2015 at 11:01:17AM -0400, Rob Clark wrote: There are folks who are working to get saner, more-upstream kernels working on devices..

Re: [RFC PATCH 0/5] Add smp booting support for Qualcomm ARMv8 SoCs

2015-04-16 Thread Matt Sealey
Hi Rob, On Thu, Apr 16, 2015 at 12:17 PM, Rob Clark robdcl...@gmail.com wrote: On Thu, Apr 16, 2015 at 11:21 AM, Catalin Marinas catalin.mari...@arm.com wrote: But I'm definitely going to discourage companies like Qualcomm deliberately ignoring the existing booting protocols while trying to

Re: [RFC PATCH 0/5] Add smp booting support for Qualcomm ARMv8 SoCs

2015-04-15 Thread Catalin Marinas
On Tue, Apr 14, 2015 at 05:48:48PM -0400, Rob Clark wrote: Just speaking as an outsider to this topic, but seems like most/all tablets/phones/etc ship with signed firmware. Which means for most of the population, upgrading the firmware to a new version which did support the standard (assuming

Re: [RFC PATCH 0/5] Add smp booting support for Qualcomm ARMv8 SoCs

2015-04-15 Thread Catalin Marinas
On Tue, Apr 14, 2015 at 09:21:17AM -0500, Kumar Gala wrote: On Apr 13, 2015, at 4:41 AM, Catalin Marinas catalin.mari...@arm.com wrote: On Fri, Apr 10, 2015 at 02:06:33PM -0500, Kumar Gala wrote: On Apr 10, 2015, at 11:10 AM, Catalin Marinas catalin.mari...@arm.com wrote: Qualcomm choose

Re: [RFC PATCH 0/5] Add smp booting support for Qualcomm ARMv8 SoCs

2015-04-15 Thread Rob Clark
On Wed, Apr 15, 2015 at 9:34 AM, Catalin Marinas catalin.mari...@arm.com wrote: On Tue, Apr 14, 2015 at 05:48:48PM -0400, Rob Clark wrote: Just speaking as an outsider to this topic, but seems like most/all tablets/phones/etc ship with signed firmware. Which means for most of the population,

Re: [RFC PATCH 0/5] Add smp booting support for Qualcomm ARMv8 SoCs

2015-04-15 Thread Lina Iyer
On Tue, Apr 14 2015 at 16:32 -0600, Lorenzo Pieralisi wrote: On Tue, Apr 14, 2015 at 03:21:17PM +0100, Kumar Gala wrote: [...] Looking beyond this set of patches, I can foresee that you won't care about the generic arm64 cpuidle driver either, or more precisely the separation between

Re: [RFC PATCH 0/5] Add smp booting support for Qualcomm ARMv8 SoCs

2015-04-15 Thread Lorenzo Pieralisi
On Wed, Apr 15, 2015 at 05:17:59PM +0100, Lina Iyer wrote: On Tue, Apr 14 2015 at 16:32 -0600, Lorenzo Pieralisi wrote: On Tue, Apr 14, 2015 at 03:21:17PM +0100, Kumar Gala wrote: [...] Looking beyond this set of patches, I can foresee that you won't care about the generic arm64

Re: [RFC PATCH 0/5] Add smp booting support for Qualcomm ARMv8 SoCs

2015-04-14 Thread Kumar Gala
On Apr 14, 2015, at 9:21 AM, Kumar Gala ga...@codeaurora.org wrote: So please come up with proper technical arguments rather than the kernel should take whatever SoC vendors dreamt of. There is no technical argument to be made. This is about the community and you as maintainer wanting

Re: [RFC PATCH 0/5] Add smp booting support for Qualcomm ARMv8 SoCs

2015-04-14 Thread Mark Rutland
On Fri, Apr 10, 2015 at 11:05:29AM +0100, Catalin Marinas wrote: On Thu, Apr 09, 2015 at 12:37:06PM -0500, Kumar Gala wrote: This patch set adds support for SMP boot on the MSM8x16 family of Qualcomm SoCs. To support SMP on the MSM8x16 SoCs we need to add ARMv8/64-bit SCM interfaces

Re: [RFC PATCH 0/5] Add smp booting support for Qualcomm ARMv8 SoCs

2015-04-14 Thread Kumar Gala
On Apr 13, 2015, at 4:41 AM, Catalin Marinas catalin.mari...@arm.com wrote: On Fri, Apr 10, 2015 at 02:06:33PM -0500, Kumar Gala wrote: On Apr 10, 2015, at 11:10 AM, Catalin Marinas catalin.mari...@arm.com wrote: On Fri, Apr 10, 2015 at 10:24:46AM -0500, Kumar Gala wrote: On Apr 10,

Re: [RFC PATCH 0/5] Add smp booting support for Qualcomm ARMv8 SoCs

2015-04-14 Thread Mark Rutland
On Tue, Apr 14, 2015 at 03:44:11PM +0100, Kumar Gala wrote: On Apr 14, 2015, at 9:21 AM, Kumar Gala ga...@codeaurora.org wrote: So please come up with proper technical arguments rather than the kernel should take whatever SoC vendors dreamt of. There is no technical argument to

Re: [RFC PATCH 0/5] Add smp booting support for Qualcomm ARMv8 SoCs

2015-04-14 Thread Rob Clark
On Tue, Apr 14, 2015 at 5:17 PM, Catalin Marinas catalin.mari...@arm.com wrote: On Tue, Apr 14, 2015 at 02:49:04PM -0500, Kumar Gala wrote: On Apr 14, 2015, at 11:36 AM, Mark Rutland mark.rutl...@arm.com wrote: On Fri, Apr 10, 2015 at 11:05:29AM +0100, Catalin Marinas wrote: On Thu, Apr 09,

Re: [RFC PATCH 0/5] Add smp booting support for Qualcomm ARMv8 SoCs

2015-04-14 Thread Kumar Gala
On Apr 14, 2015, at 11:36 AM, Mark Rutland mark.rutl...@arm.com wrote: On Fri, Apr 10, 2015 at 11:05:29AM +0100, Catalin Marinas wrote: On Thu, Apr 09, 2015 at 12:37:06PM -0500, Kumar Gala wrote: This patch set adds support for SMP boot on the MSM8x16 family of Qualcomm SoCs. To

Re: [RFC PATCH 0/5] Add smp booting support for Qualcomm ARMv8 SoCs

2015-04-14 Thread Lorenzo Pieralisi
On Tue, Apr 14, 2015 at 03:21:17PM +0100, Kumar Gala wrote: [...] Looking beyond this set of patches, I can foresee that you won't care about the generic arm64 cpuidle driver either, or more precisely the separation between cpuidle subsystem+driver and the SoC-specific back-end

Re: [RFC PATCH 0/5] Add smp booting support for Qualcomm ARMv8 SoCs

2015-04-14 Thread Catalin Marinas
On Tue, Apr 14, 2015 at 02:49:04PM -0500, Kumar Gala wrote: On Apr 14, 2015, at 11:36 AM, Mark Rutland mark.rutl...@arm.com wrote: On Fri, Apr 10, 2015 at 11:05:29AM +0100, Catalin Marinas wrote: On Thu, Apr 09, 2015 at 12:37:06PM -0500, Kumar Gala wrote: This patch set adds support for SMP

Re: [RFC PATCH 0/5] Add smp booting support for Qualcomm ARMv8 SoCs

2015-04-13 Thread Catalin Marinas
On Fri, Apr 10, 2015 at 02:06:33PM -0500, Kumar Gala wrote: On Apr 10, 2015, at 11:10 AM, Catalin Marinas catalin.mari...@arm.com wrote: On Fri, Apr 10, 2015 at 10:24:46AM -0500, Kumar Gala wrote: On Apr 10, 2015, at 5:05 AM, Catalin Marinas catalin.mari...@arm.com wrote: On Thu, Apr 09,

[RFC PATCH 0/5] Add smp booting support for Qualcomm ARMv8 SoCs

2015-04-10 Thread Kumar Gala
This patch set adds support for SMP boot on the MSM8x16 family of Qualcomm SoCs. To support SMP on the MSM8x16 SoCs we need to add ARMv8/64-bit SCM interfaces to setup the boot/release addresses for the secondary CPUs. In addition we need a uniquie set of cpu ops. I'm aware the desired methods

[RFC PATCH 0/5] Add smp booting support for Qualcomm ARMv8 SoCs

2015-04-09 Thread Kumar Gala
This patch set adds support for SMP boot on the MSM8x16 family of Qualcomm SoCs. To support SMP on the MSM8x16 SoCs we need to add ARMv8/64-bit SCM interfaces to setup the boot/release addresses for the secondary CPUs. In addition we need a uniquie set of cpu ops. I'm aware the desired methods