From: Guo Ren <ren_guo@c-sky.com>
To: Arnd Bergmann <arnd@arndb.de>
Cc: Palmer Dabbelt <palmer@sifive.com>,
linux-arch <linux-arch@vger.kernel.org>,
Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
Thomas Gleixner <tglx@linutronix.de>,
Daniel Lezcano <daniel.lezcano@linaro.org>,
Jason Cooper <jason@lakedaemon.net>,
DTML <devicetree@vger.kernel.org>,
andrea.parri@amarulasolutions.com,
Peter Zijlstra <peterz@infradead.org>,
c-sky_gcc_upstream@c-sky.com, gnu-csky@mentor.com,
Thomas Petazzoni <thomas.petazzoni@bootlin.com>,
wbx@uclibc-ng.org, Greentime Hu <green.hu@gmail.com>,
Stephen Rothwell <sfr@canb.auug.org.au>
Subject: Re: [PATCH V4 00/27] C-SKY(csky) Linux Kernel Port
Date: Sat, 22 Sep 2018 07:48:14 +0800 [thread overview]
Message-ID: <20180921234813.GA5469@guoren-Inspiron-7460> (raw)
Message-ID: <20180921234814.irZaM1mgwCMyaUCt1aJOxiK_somLj36PNFX_BYd6Hck@z> (raw)
In-Reply-To: <CAK8P3a3v0K6G47dAVFtn+XjM3iM7vx6L_RB0mmONBDB9gBNgag@mail.gmail.com>
On Thu, Sep 20, 2018 at 10:18:51PM -0700, Arnd Bergmann wrote:
> On Thu, Sep 20, 2018 at 10:52 AM Palmer Dabbelt <palmer@sifive.com> wrote:
> >
> > On Fri, 14 Sep 2018 07:37:20 PDT (-0700), ren_guo@c-sky.com wrote:
> > > On Wed, Sep 12, 2018 at 04:30:36PM +0200, Arnd Bergmann wrote:
> > >> On Wed, Sep 12, 2018 at 3:25 PM Guo Ren <ren_guo@c-sky.com> wrote:
> > I don't want to hijack this thread, but in RISC-V land we were hoping to have a
> > user ABI free of 32-bit time_t. Our 32-bit glibc ABI hasn't been finalized
> > yet, and when I talked to the glibc guys a few weeks ago they were happy to let
> > us wait until 32-bit time_t can be removed before we stabilize the ABI. We've
> > been maintaining out-of-tree glibc patches for a while now, so I'd really like
> > to get them into the next glibc release.
> >
> > Mapping out the schedule more explicitly, as I'm terrible with dates:
> >
> > * 4.19-rc4 was 2018-09-16
> > * 4.19 should be 2018-10-21
> > * 4.20 should be 2019-01-13 (skipping 2 weeks for the holidays)
> > * 4.21 merge window should close 2019-01-27
> > * glibc 2.29 is scheduled for 2019-02-01
Thx for the schedule info.
> >
> > That's very tight, but assuming we at least have a prototype of the API so we
> > can get the rv32i glibc patches in much earlier it might be OK. There was some
> > talk of being able to use some workarounds to do a 32-bit time_t user ABI
> > without the cooresponding kernel ABI, so we could always go down that route to
> > start and then decide to deprecate or not deprecate the 32-bit kernel ABI at
> > the last minute -- not something I'm fond of doing, but an option.
> >
> > How close to done do you think the 32-bit time_t will be by the end of the 4.20
> > merge window? If it's close enough to start our glibc push then that might be
> > OK.
>
> It will be a bit of a stretch, but it's possible. Most syscalls are
> done in linux-next,
> I have a few more pending, and only clock_adjtime is really missing now (I had
> some earlier patches that I could revive).
Seems time schedule is OK. If we make csky get into linux-4.20, then csky glibc
port could remove 32-bit time_t in patchset before glibc 2.29 release.
> My plan was to get that all into 4.20, and then have a conversation about the
> actual syscall table changes in 4.21. If we need it for both csky and rv32,
> we might just change the generic syscall table that way in 4.21 without
> changing all the other ones along with them. I don't want to drag things out
> over too many merge windows though, and my plan was to do all architectures
> together to simplify the version checks in the libc code to only have to check
> for a single version.
Seems that's no problem.
Best Regards
Guo Ren
next prev parent reply other threads:[~2018-09-22 5:40 UTC|newest]
Thread overview: 86+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-09-12 13:24 [PATCH V4 00/27] C-SKY(csky) Linux Kernel Port Guo Ren
2018-09-12 13:24 ` Guo Ren
2018-09-12 13:24 ` [PATCH V3 01/27] csky: Build infrastructure Guo Ren
2018-09-12 13:24 ` Guo Ren
2018-09-12 13:24 ` [PATCH V3 02/27] csky: defconfig Guo Ren
2018-09-12 13:24 ` Guo Ren
2018-09-12 13:24 ` [PATCH V3 03/27] csky: Kernel booting Guo Ren
2018-09-12 13:24 ` Guo Ren
2018-09-12 13:24 ` [PATCH V3 04/27] csky: Exception handling Guo Ren
2018-09-12 13:24 ` Guo Ren
2018-09-12 13:24 ` [PATCH V3 05/27] csky: System Call Guo Ren
2018-09-12 13:24 ` Guo Ren
2018-09-12 13:24 ` [PATCH V3 06/27] csky: Cache and TLB routines Guo Ren
2018-09-12 13:24 ` Guo Ren
2018-09-12 13:24 ` [PATCH V3 07/27] csky: MMU and page table management Guo Ren
2018-09-12 13:24 ` Guo Ren
2018-09-12 13:24 ` [PATCH V3 08/27] csky: Process management and Signal Guo Ren
2018-09-12 13:24 ` Guo Ren
2018-09-12 13:24 ` [PATCH V3 09/27] csky: VDSO and rt_sigreturn Guo Ren
2018-09-12 13:24 ` Guo Ren
2018-09-12 13:24 ` [PATCH V3 10/27] csky: IRQ handling Guo Ren
2018-09-12 13:24 ` Guo Ren
2018-09-12 13:24 ` [PATCH V3 12/27] csky: ELF and module probe Guo Ren
2018-09-12 13:24 ` Guo Ren
2018-09-12 13:24 ` [PATCH V3 13/27] csky: Library functions Guo Ren
2018-09-12 13:24 ` Guo Ren
2018-09-12 13:24 ` [PATCH V3 14/27] csky: User access Guo Ren
2018-09-12 13:24 ` Guo Ren
2018-09-12 13:24 ` [PATCH V3 15/27] csky: Debug and Ptrace GDB Guo Ren
2018-09-12 13:24 ` Guo Ren
2018-09-12 13:24 ` [PATCH V3 16/27] csky: SMP support Guo Ren
2018-09-12 13:24 ` Guo Ren
2018-09-12 13:24 ` [PATCH V3 18/27] dt-bindings: csky CPU Bindings Guo Ren
2018-09-12 13:24 ` Guo Ren
2018-09-12 13:24 ` [PATCH V3 19/27] dt-bindings: timer: gx6605s SOC timer Guo Ren
2018-09-12 13:24 ` Guo Ren
2018-09-12 13:24 ` [PATCH V3 20/27] dt-bindings: timer: C-SKY Multi-processor timer Guo Ren
2018-09-12 13:24 ` Guo Ren
2018-09-12 13:24 ` [PATCH V3 22/27] dt-bindings: interrupt-controller: C-SKY SMP intc Guo Ren
2018-09-12 13:24 ` Guo Ren
2018-09-12 13:24 ` [PATCH V3 23/27] clocksource: add gx6605s SOC system timer Guo Ren
2018-09-12 13:24 ` Guo Ren
[not found] ` <abb46d366b513b814f7af234d560306a818b7324.1536757532.git.ren_guo@c-sky.com>
2018-09-12 14:22 ` [PATCH V3 17/27] csky: Misc headers Arnd Bergmann
2018-09-12 14:22 ` Arnd Bergmann
2018-09-12 14:30 ` [PATCH V4 00/27] C-SKY(csky) Linux Kernel Port Arnd Bergmann
2018-09-12 14:30 ` Arnd Bergmann
2018-09-14 14:37 ` Guo Ren
2018-09-14 14:37 ` Guo Ren
2018-09-14 14:46 ` Arnd Bergmann
2018-09-14 14:46 ` Arnd Bergmann
2018-09-14 16:02 ` Guo Ren
2018-09-14 16:02 ` Guo Ren
2018-09-14 16:09 ` Arnd Bergmann
2018-09-14 16:09 ` Arnd Bergmann
2018-09-14 23:28 ` Guo Ren
2018-09-14 23:28 ` Guo Ren
2018-09-20 17:52 ` Palmer Dabbelt
2018-09-20 17:52 ` Palmer Dabbelt
2018-09-21 5:18 ` Arnd Bergmann
2018-09-21 5:18 ` Arnd Bergmann
2018-09-21 23:48 ` Guo Ren [this message]
2018-09-21 23:48 ` Guo Ren
2018-09-24 7:21 ` Geert Uytterhoeven
2018-09-24 7:21 ` Geert Uytterhoeven
2018-09-24 8:47 ` Arnd Bergmann
2018-09-24 8:47 ` Arnd Bergmann
2018-09-16 1:07 ` Guo Ren
2018-09-16 1:07 ` Guo Ren
2018-09-16 4:53 ` Guo Ren
2018-09-16 4:53 ` Guo Ren
2018-09-17 11:54 ` Stephen Rothwell
2018-09-17 11:54 ` Stephen Rothwell
2018-09-17 12:03 ` Stephen Rothwell
2018-09-17 12:03 ` Stephen Rothwell
2018-09-17 14:50 ` Guo Ren
2018-09-17 14:50 ` Guo Ren
2018-09-17 14:37 ` Guo Ren
2018-09-17 14:37 ` Guo Ren
[not found] ` <93e8b592e429c156ad4d4ca5d85ef48fd0ab8b70.1536757532.git.ren_guo@c-sky.com>
2018-09-12 15:55 ` [PATCH V3 11/27] csky: Atomic operations Peter Zijlstra
2018-09-12 15:55 ` Peter Zijlstra
2018-09-15 14:55 ` Guo Ren
2018-09-15 14:55 ` Guo Ren
2018-09-17 8:17 ` Peter Zijlstra
2018-09-17 8:17 ` Peter Zijlstra
2018-09-17 15:05 ` Guo Ren
2018-09-17 15:05 ` Guo Ren
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