Re: [RFC PATCH 1/5] RISC-V: Make IPI triggering flexible

2018-09-29 Thread Anup Patel
On Sat, Sep 29, 2018 at 7:15 AM Palmer Dabbelt wrote: > > On Mon, 10 Sep 2018 06:34:18 PDT (-0700), Christoph Hellwig wrote: > > On Thu, Sep 06, 2018 at 04:15:14PM +0530, Anup Patel wrote: > >> This patch is doing two things: > >> 1. Allow IRQCHIP driver to provide IPI trigger mechanism > > > > An

Re: [RFC PATCH 1/5] RISC-V: Make IPI triggering flexible

2018-09-28 Thread Palmer Dabbelt
On Mon, 10 Sep 2018 06:34:18 PDT (-0700), Christoph Hellwig wrote: On Thu, Sep 06, 2018 at 04:15:14PM +0530, Anup Patel wrote: This patch is doing two things: 1. Allow IRQCHIP driver to provide IPI trigger mechanism And the big questions is why do we want that? The last thing we want is for p

Re: [RFC PATCH 1/5] RISC-V: Make IPI triggering flexible

2018-09-10 Thread Anup Patel
On Mon, Sep 10, 2018 at 7:04 PM, Christoph Hellwig wrote: > On Thu, Sep 06, 2018 at 04:15:14PM +0530, Anup Patel wrote: >> This patch is doing two things: >> 1. Allow IRQCHIP driver to provide IPI trigger mechanism > > And the big questions is why do we want that? The last thing we > want is for

Re: [RFC PATCH 1/5] RISC-V: Make IPI triggering flexible

2018-09-10 Thread Christoph Hellwig
On Thu, Sep 06, 2018 at 04:15:14PM +0530, Anup Patel wrote: > This patch is doing two things: > 1. Allow IRQCHIP driver to provide IPI trigger mechanism And the big questions is why do we want that? The last thing we want is for people to "innovate" on how they deliver IPIs. RISC-V has defined a

Re: [RFC PATCH 1/5] RISC-V: Make IPI triggering flexible

2018-09-06 Thread Anup Patel
On Thu, Sep 6, 2018 at 3:15 PM, Palmer Dabbelt wrote: > On Tue, 04 Sep 2018 11:50:02 PDT (-0700), Christoph Hellwig wrote: >> >> On Tue, Sep 04, 2018 at 06:15:10PM +0530, Anup Patel wrote: >>> >>> The mechanism to trigger IPI is generally part of interrupt-controller >>> driver for various archite

Re: [RFC PATCH 1/5] RISC-V: Make IPI triggering flexible

2018-09-06 Thread Palmer Dabbelt
On Tue, 04 Sep 2018 11:50:02 PDT (-0700), Christoph Hellwig wrote: On Tue, Sep 04, 2018 at 06:15:10PM +0530, Anup Patel wrote: The mechanism to trigger IPI is generally part of interrupt-controller driver for various architectures. On RISC-V, we have an option to trigger IPI using SBI or SOC ven

Re: [RFC PATCH 1/5] RISC-V: Make IPI triggering flexible

2018-09-05 Thread Christoph Hellwig
On Wed, Sep 05, 2018 at 10:06:24AM +0530, Anup Patel wrote: > It's outrageous to call IPI mechanisms using interrupt-controller as "wacky". I call pluggable IPI whacky, and it's not outragous. What is outragous is your bullshit architecture astronaut patches. There might be a nned to abstract IP

Re: [RFC PATCH 1/5] RISC-V: Make IPI triggering flexible

2018-09-04 Thread Anup Patel
On Wed, Sep 5, 2018 at 12:20 AM, Christoph Hellwig wrote: > On Tue, Sep 04, 2018 at 06:15:10PM +0530, Anup Patel wrote: >> The mechanism to trigger IPI is generally part of interrupt-controller >> driver for various architectures. On RISC-V, we have an option to trigger >> IPI using SBI or SOC ven

Re: [RFC PATCH 1/5] RISC-V: Make IPI triggering flexible

2018-09-04 Thread Christoph Hellwig
On Tue, Sep 04, 2018 at 06:15:10PM +0530, Anup Patel wrote: > The mechanism to trigger IPI is generally part of interrupt-controller > driver for various architectures. On RISC-V, we have an option to trigger > IPI using SBI or SOC vendor can implement RISC-V CPU where IPI will be > triggered using

[RFC PATCH 1/5] RISC-V: Make IPI triggering flexible

2018-09-04 Thread Anup Patel
The mechanism to trigger IPI is generally part of interrupt-controller driver for various architectures. On RISC-V, we have an option to trigger IPI using SBI or SOC vendor can implement RISC-V CPU where IPI will be triggered using SOC interrupt-controller (e.g. custom PLIC). This patch makes IPI