On Wed, Oct 7, 2020 at 4:39 AM Atish Patra wrote:
>
> On Tue, Oct 6, 2020 at 9:46 AM Guo Ren wrote:
> >
> > On Tue, Oct 6, 2020 at 3:14 AM Atish Patra wrote:
> > >
> > > On Thu, Sep 24, 2020 at 9:19 AM Guo Ren wrote:
> > > >
> >
for this, do you
> mind posting one? Otherwise I'll take a crack at constructing the revert
> myself.
Please have a look:
https://lore.kernel.org/linux-riscv/1602002973-92934-1-git-send-email-guo...@kernel.org/T/#u
The only revert couldn't solve the static_obj problem.
--
Best Regards
Guo Ren
ML: https://lore.kernel.org/linux-csky/
On Tue, Oct 6, 2020 at 3:14 AM Atish Patra wrote:
>
> On Thu, Sep 24, 2020 at 9:19 AM Guo Ren wrote:
> >
> > How about this, revert the commit and don't free INIT_DATA_SECTION. I
> > think the solution is safe enough, but wast a little memory.
> >
> > diff --g
The following commit has been merged into the timers/urgent branch of tip:
Commit-ID: bc6717d55d07110d8f3c6d31ec2af50c11b07091
Gitweb:
https://git.kernel.org/tip/bc6717d55d07110d8f3c6d31ec2af50c11b07091
Author:Guo Ren
AuthorDate:Tue, 18 Aug 2020 07:31:17
Committer
On Wed, Sep 23, 2020 at 12:52 PM Al Viro wrote:
>
> On Wed, Sep 23, 2020 at 10:37:31AM +0800, Guo Ren wrote:
>
> > > What's going on there? The mapping is really weird - assuming
> > > you had v0..v31 in the first 32 elements of regs->vr[], you
> > > end u
.
>
> --
> Andreas Schwab, sch...@linux-m68k.org
> GPG Key fingerprint = 7578 EB47 D4E5 4D69 2510 2552 DF73 E780 A9DA AEC1
> "And now for something completely different."
--
Best Regards
Guo Ren
ML: https://lore.kernel.org/linux-csky/
On Wed, Sep 23, 2020 at 8:23 AM Al Viro wrote:
>
> On Wed, Sep 23, 2020 at 08:03:20AM +0800, Guo Ren wrote:
> > Thx Duan,
> >
> > Acked-by: Guo Ren
> >
> > Hi AI,
> >
> > I found the broken commit still has a question:
> >
> > > c
Acked-by: Guo Ren
On Sat, Sep 19, 2020 at 5:50 PM Thomas Gleixner wrote:
>
> Signed-off-by: Thomas Gleixner
> Cc: Guo Ren
> Cc: linux-c...@vger.kernel.org
> ---
> Note: Completely untested
> ---
> arch/csky/Kconfig |1
> arch/csky/include/asm/
Thx Duan,
Acked-by: Guo Ren
Hi AI,
I found the broken commit still has a question:
> commit dcad7854fcce6a2d49b6a3ead5bbefeff047e559
> Author: Al Viro
> Date: Tue Jun 16 15:28:29 2020 -0400
>csky: switch to ->regset_get()
>NB: WTF "- what the fuck :(&q
2020-06-27 13:57, guo...@kernel.org wrote:
> > From: Guo Ren
> >
> > When enable LOCKDEP, static_obj() will cause error. Because some
> > __initdata static variables is before _stext:
> >
> > static int static_obj(const void *obj)
> > {
> > unsign
Looks more clear.
Acked-by: Guo Ren
On Fri, Aug 28, 2020 at 12:39 AM Masami Hiramatsu wrote:
>
> Signed-off-by: Masami Hiramatsu
> ---
> arch/csky/kernel/probes/kprobes.c | 78
> +
> 1 file changed, 3 insertions(+), 75 deletions(-)
>
On Sat, Aug 15, 2020 at 6:36 AM Palmer Dabbelt wrote:
>
> On Mon, 13 Jul 2020 16:39:19 PDT (-0700), guo...@kernel.org wrote:
> > From: Guo Ren
> >
> > This patch enables "kprobe & kretprobe" to work with ftrace
> > interface. It utilized soft
On Sat, Aug 15, 2020 at 6:36 AM Palmer Dabbelt wrote:
>
> On Mon, 13 Jul 2020 16:39:18 PDT (-0700), guo...@kernel.org wrote:
> > From: Guo Ren
> >
> > The "Changing Execution Path" section in the Documentation/kprobes.txt
> > said:
> >
> >
On Fri, Aug 7, 2020 at 12:01 PM Steven Rostedt wrote:
>
> On Fri, 7 Aug 2020 10:59:16 +0800
> Guo Ren wrote:
> > >
> > > This looks like a bug in the lockdep_assert_held() in whatever arch
> > > (riscv) is running.
> > Seems you think it's a bug o
On Thu, Aug 6, 2020 at 11:48 PM Steven Rostedt wrote:
>
> On Thu, 6 Aug 2020 14:50:54 +
> guo...@kernel.org wrote:
>
> > From: Guo Ren
> >
> > The function ftrace_process_locs() will modify text code, so we
> > should give a text_mutex lock. Because so
Acked-by: Guo Ren
On Thu, Aug 6, 2020 at 3:55 AM wrote:
>
> On Wed, Aug 05, 2020 at 12:41:46PM +0200, pet...@infradead.org wrote:
> > Hi,
> >
> > While doing an audit of smp_mb__after_spinlock, I found that csky
> > defines it, why?
> >
> > C
s a bit heavy, are any
tickets-like comm spinlock infrastructures in the plan?
--
Best Regards
Guo Ren
ML: https://lore.kernel.org/linux-csky/
Acked-by: Guo Ren
On Tue, Jul 28, 2020 at 11:34 AM Nicholas Piggin wrote:
>
> Cc: Guo Ren
> Cc: linux-c...@vger.kernel.org
> Signed-off-by: Nicholas Piggin
> ---
> arch/csky/include/asm/mmu_context.h | 8 +++-
> 1 file changed, 3 insertions(+), 5 deletions(-)
>
id using scripts/recordmcount.pl script and directly generate nops
for _mcount.
It's different from -fpatchable-function-entry=2 which generating nops
before function prologue in arm64, isn't it?
On Tue, Jul 21, 2020 at 9:27 PM Masami Hiramatsu wrote:
>
> On Wed, 15 Jul 2020 00:24:54
Hi Masami,
On Tue, Jul 21, 2020 at 9:27 PM Masami Hiramatsu wrote:
>
> On Wed, 15 Jul 2020 00:24:54 +0800
> Guo Ren wrote:
>
> > Thx Masami,
> >
> > On Tue, Jul 14, 2020 at 7:38 PM Masami Hiramatsu
> > wrote:
> > >
> > > On Mon, 13
Thx Joerg & Guenter,
Cool work!
Acked-by: Guo Ren
Approve to next branch.
On Tue, Jul 21, 2020 at 9:21 PM Guenter Roeck wrote:
>
> On Tue, Jul 21, 2020 at 01:23:14PM +0200, Joerg Roedel wrote:
> > From: Joerg Roedel
> >
> > Building a kern
uly/549910.html
On Tue, Jul 14, 2020 at 4:37 PM Will Deacon wrote:
>
> On Mon, Jul 13, 2020 at 04:03:33AM +, guo...@kernel.org wrote:
> > From: Guo Ren
> >
> > TSK_STACK_CANARY only used in arm64/Makefile with
> > CONFIG_STACKPROTECTOR_PER_TASK wrap. So
On Tue, Jul 14, 2020 at 7:23 PM Masami Hiramatsu wrote:
>
> Hi Guo,
>
> On Mon, 13 Jul 2020 23:39:15 +
> guo...@kernel.org wrote:
>
> > From: Guo Ren
> >
> > The patchset includes kprobe/uprobe support and some related fixups.
> > Patrick provi
eturn;
if (kprobe_breakpoint_handler(regs))
return;
#endif
#ifdef CONFIG_UPROBES
if (uprobe_single_step_handler(regs))
return;
if (uprobe_breakpoint_handler(regs))
return;
#endif
current->thread.bad_cause = regs-&
Thx Masami,
On Tue, Jul 14, 2020 at 7:38 PM Masami Hiramatsu wrote:
>
> On Mon, 13 Jul 2020 23:39:21 +
> guo...@kernel.org wrote:
>
> > From: Guo Ren
> >
> > This patch adds support for kprobes on ftrace call sites to avoids
> > much of the overhead with
On 2020/7/14 下午4:37, Will Deacon wrote:
On Mon, Jul 13, 2020 at 04:03:33AM +, guo...@kernel.org wrote:
From: Guo Ren
TSK_STACK_CANARY only used in arm64/Makefile with
CONFIG_STACKPROTECTOR_PER_TASK wrap. So use the same policy in
asm-offset.c.
Signed-off-by: Guo Ren
Co-developed
Hi Masami,
On Sun, Jul 12, 2020 at 9:37 PM Masami Hiramatsu wrote:
>
> On Sat, 11 Jul 2020 09:32:01 +0800
> Guo Ren wrote:
>
> > Thx Masami,
> >
> > On Fri, Jul 10, 2020 at 9:50 PM Masami Hiramatsu
> > wrote:
> > >
> > > Hi Guo,
&g
Hi Kees,
On Mon, Jul 13, 2020 at 10:40 AM Kees Cook wrote:
>
> On Fri, Jul 10, 2020 at 04:19:58PM +, guo...@kernel.org wrote:
> > From: Guo Ren
> >
> > This enables the use of per-task stack canary values if GCC has
> > support for emitting the s
s on
> this behevior, so could you consider to support it in the "ftrace"
> implementation at first? (And if it is enabled, you can enable the
> livepatch on RISCV too)
Great message!
But can you show me codes that bpf and err-jnject using the behavior? Thx
I'll try to fix up it :)
--
Best Regards
Guo Ren
ML: https://lore.kernel.org/linux-csky/
Thank you, Palmer
On Fri, Jul 10, 2020 at 6:06 AM Palmer Dabbelt wrote:
>
> On Sat, 27 Jun 2020 06:57:05 PDT (-0700), guo...@kernel.org wrote:
> > From: Guo Ren
> >
> > Lockdep is needed by proving the spinlocks and rwlocks. To support it,
> > we need to add
3 /* Try to get a semi random initial value. */
> 24 get_random_bytes(, sizeof(canary));
> 25 tsc = get_cycles();
> > 26 canary += tsc + (tsc << 32UL);
>
> ---
> 0-DAY CI Kernel Test Service, Intel Corporation
> https://lists.01.org/hyperkitty/list/kbuild-...@lists.01.org
--
Best Regards
Guo Ren
ML: https://lore.kernel.org/linux-csky/
On Thu, Jul 9, 2020 at 1:32 PM Alex Ghiti wrote:
>
> Hi Guo,
>
> Le 7/9/20 à 12:38 AM, guo...@kernel.org a écrit :
> > From: Guo Ren
> >
> > Let riscv enable randomizes the stack, heap and binary images of
> > ELF binaries. Seems it's ok at all after qemu &am
On Tue, Jul 7, 2020 at 4:26 PM Zong Li wrote:
>
> On Mon, Jul 6, 2020 at 6:12 PM Masami Hiramatsu wrote:
> >
> > Hi Guo,
> >
> > On Sat, 4 Jul 2020 03:34:18 +
> > guo...@kernel.org wrote:
> >
> > > From: Guo Ren
> > >
>
On Mon, Jul 6, 2020 at 9:21 AM Kees Cook wrote:
>
> On Mon, Jul 06, 2020 at 09:01:51AM +0800, Guo Ren wrote:
> > Yeah! :) I just want to show you, how about the format: use tp in gpr
> > to do that. The format is similar to arm64.
> >
> > tp is the task_struct p
On Mon, Jul 6, 2020 at 4:40 AM Kees Cook wrote:
>
> On Sun, Jul 05, 2020 at 02:13:17PM +, guo...@kernel.org wrote:
> > From: Guo Ren
> >
> > After compare arm64 and x86 implementations, seems arm64's is more
> > flexible and readable. The key p
On Mon, Jul 6, 2020 at 4:31 AM Kees Cook wrote:
>
> On Sun, Jul 05, 2020 at 10:16:14PM +0800, Guo Ren wrote:
> > On Sun, Jul 5, 2020 at 2:53 PM Kees Cook wrote:
> > > On Sun, Jul 05, 2020 at 06:24:15AM +, guo...@kernel.org wrote:
> > > > +static __always_i
Hi Kees,
On Sun, Jul 5, 2020 at 2:53 PM Kees Cook wrote:
>
> On Sun, Jul 05, 2020 at 06:24:15AM +, guo...@kernel.org wrote:
> > From: Guo Ren
> >
> > The -fstack-protector & -fstack-protector-strong features are from
> > gcc. The patch only add basic
!
So I insert a "ebreak" instruction behind the target single-step
instruction to simulate the same mechanism.
--
Best Regards
Guo Ren
ML: https://lore.kernel.org/linux-csky/
Acked-by: Guo Ren
On Wed, Jul 1, 2020 at 4:45 AM Peter Xu wrote:
>
> Use the general page fault accounting by passing regs into handle_mm_fault().
> It naturally solve the issue of multiple page fault accounting when page fault
> retry happened.
>
> CC: Guo Ren
> CC: linux
Hi Palmer,
On Tue, Jun 30, 2020 at 7:22 AM Palmer Dabbelt wrote:
>
> On Sun, 28 Jun 2020 09:25:24 PDT (-0700), mhira...@kernel.org wrote:
> > On Sun, 28 Jun 2020 16:07:37 +
> > guo...@kernel.org wrote:
> >
> >> From: Guo Ren
> >>
> >> U
On Sun, Jun 28, 2020 at 10:52 PM Masami Hiramatsu wrote:
>
> On Sun, 28 Jun 2020 14:12:07 +0800
> Guo Ren wrote:
>
> > On Sun, Jun 28, 2020 at 10:59 AM Masami Hiramatsu
> > wrote:
> > >
> > > On Sat, 27 Jun 2020 16:20:02 +
> > > g
On Sun, Jun 28, 2020 at 10:59 AM Masami Hiramatsu wrote:
>
> On Sat, 27 Jun 2020 16:20:02 +
> guo...@kernel.org wrote:
>
> > From: Guo Ren
> >
> > Unfortunately, the current code couldn't be compiled, because
> > BUILD_BUG_ON needs a static defined value
On Sat, Jun 20, 2020 at 12:05 AM Peter Xu wrote:
>
> Use the general page fault accounting by passing regs into handle_mm_fault().
> It naturally solve the issue of multiple page fault accounting when page fault
> retry happened.
>
> CC: Guo Ren
> CC: linux-c...@vger.ke
Hi Peter,
On Tue, Jun 16, 2020 at 6:16 AM Peter Xu wrote:
>
> Use the new mm_fault_accounting() helper for page fault accounting.
> Also, move the accounting to be after release of mmap_sem.
>
> CC: Guo Ren
> CC: linux-c...@vger.kernel.org
> Signed-off-by: Peter Xu
I can do it.
On Mon, Jun 15, 2020 at 4:43 PM Tobias Klauser wrote:
>
> On 2020-06-13 at 10:42:07 +0200, Guo Ren wrote:
> > Acked-by: Guo Ren
>
> Thanks for the Ack. Are you taking this patch through your own tree or
> should I directly submit to someone else?
>
> &
Acked-by: Guo Ren
On Thu, Jun 11, 2020 at 5:58 PM Flavio Suligoi wrote:
>
> Fix typo: "triger" --> "trigger"
>
> Signed-off-by: Flavio Suligoi
> ---
> Documentation/devicetree/bindings/gpio/mediatek,mt7621-gpio.txt | 2 +-
> .../devicetree/bindings
Acked-by: Guo Ren
On Wed, Jun 10, 2020 at 11:45 PM Tobias Klauser wrote:
>
> These are used nowhere in the tree (except for some architectures which
> define them for their own use) and were already removed for other
> architectures in:
>
> commit 6474924e2b5d ("ar
+ return -EINVAL;
> +
> pagefault_disable();
> result = __get_user(opcode, (uprobe_opcode_t __user *)vaddr);
> pagefault_enable();
> --
> 2.25.1.362.g51ebf55
>
>
Looks good to me, thx.
Reviewed-by: Guo Ren
--
Best Regards
Guo Ren
ML: https://lore.kernel.org/linux-csky/
igned to UPROBE_SWBP_INSN_SIZE.
>
> Not sure if it would have been possible to try to create a uprobe on an
> odd address. If yes, then the new IS_ALIGNED check certainly makes this
> better for s390, so the patch looks sane. Adding Vasily and Sven to double
> check.
Also good to csky.
--
Best Regards
Guo Ren
ML: https://lore.kernel.org/linux-csky/
On Tue, Jun 2, 2020 at 10:21 AM Greentime Hu wrote:
>
> Guo Ren 於 2020年5月31日 週日 下午11:52寫道：
> >
> > Hi Greentime & Vincent,
> >
> > Thx for the dynamic vlen implementation. I've two suggestions:
> > - Please give out glibc patches mail URL, we need
andle MSI and does not have virtualization support
> pass-through interrupts. We will most likely see a new RISC-V interrupt
> controller spec for these capabilities.
>
> Also, the PLIC spec is now owned by RISC-V foundation (not SiFive) so
> we will have to rename the driver to "irq-riscv-plic" and will have a new
> generic compatible string "riscv,plic-1.0.0". One of us (me or Palmer) will
> send separate patches for this renaming. I hope you will be fine with this??
> (Refer, https://github.com/riscv/riscv-plic-spec)
That's great, we follow riscv-plic in hardware, but don't want to use
sifive string in dts.
Acked & Thx for the job.
--
Best Regards
Guo Ren
ML: https://lore.kernel.org/linux-csky/
Since it has been redesigned with new version spec, please change the
first-author :)
And add me as Co-developed.
On Tue, May 26, 2020 at 3:03 PM Greentime Hu wrote:
>
> From: Guo Ren
>
> This patch adds ptrace support for riscv vector. The vector registers will
> be saved i
Since it has been redesigned with new version spec, please change the
first-author :)
And add me as Co-developed.
On Tue, May 26, 2020 at 3:03 PM Greentime Hu wrote:
>
> From: Guo Ren
>
> This patch is used to detect vector support status of CPU and use
> riscv_vsize to save
Since it has been redesigned with new version spec, please change the
first-author :)
And add me as Co-developed.
On Tue, May 26, 2020 at 3:03 PM Greentime Hu wrote:
>
> From: Guo Ren
>
> This patch adds sigcontext save/restore for vector. The vector registers
> will be saved i
Since it has been redesigned with new version spec, please change the
first-author :)
And add me as Co-developed.
On Tue, May 26, 2020 at 3:03 PM Greentime Hu wrote:
>
> From: Guo Ren
>
> This patch adds task switch support for vector. It supports lazy
> save and restore mec
Since it has been redesigned with new version spec, please change the
first-author :)
And add me as Co-developed.
On Tue, May 26, 2020 at 3:03 PM Greentime Hu wrote:
>
> From: Guo Ren
>
> Add vector state context struct in struct thread and asm-offsets.c
> definitions.
>
>
Since it has been redesigned with new version spec, please change the
first-author :)
And add me as Co-developed.
On Tue, May 26, 2020 at 3:03 PM Greentime Hu wrote:
>
> From: Guo Ren
>
> Follow the riscv vector spec to add new csr number.
>
> [greentime...@sifive.com: update
On Mon, Jun 1, 2020 at 4:15 PM Greentime Hu wrote:
>
> Guo Ren 於 2020年5月31日 週日 上午9:56寫道：
> >
> > Hi Greentime,
> >
> > Why remove vxrm and xstat ?
> >
> > > Appendix B: Calling Convention
> > > In the RISC-V psABI, the vector regist
only need switch_context or sigcontext vector when the flag is set.
On Tue, May 26, 2020 at 3:03 PM Greentime Hu wrote:
>
> From: Guo Ren
>
> This patch adds task switch support for vector. It supports lazy
> save and restore mechanism. It also supports all lengths of vlen.
_save->vstate_save".
> - Fixup wrong saved registers' length in vector.S.
> - Seperate unrelated patches from this one.
>
> Greentime Hu (1):
> ptrace: Use regset_size() for dynamic regset size.
>
> Guo Ren (11):
> riscv: Separate patch for cflags and aflags
> r
Hi Greentime,
On Tue, May 26, 2020 at 3:03 PM Greentime Hu wrote:
>
> From: Guo Ren
>
> This patch adds task switch support for vector. It supports lazy
> save and restore mechanism. It also supports all lengths of vlen.
>
> [greentime...@sifive.com: add support
Hi Greentime,
On Tue, May 26, 2020 at 3:03 PM Greentime Hu wrote:
>
> From: Guo Ren
>
> This patch adds sigcontext save/restore for vector. The vector registers
> will be saved in datap pointer. The datap pointer will be allocaed
> dynamically when the task needs in kerne
tioned above, vxrm and vxsat are thread storage duration.
When timer 's interrupt coming, we still need to save them in context_switch.
On Tue, May 26, 2020 at 3:03 PM Greentime Hu wrote:
>
> From: Guo Ren
>
> Follow the riscv vector spec to add new csr number.
>
> [greentime...@
Reviewed-by: Guo Ren
On Tue, May 26, 2020 at 3:03 PM Greentime Hu wrote:
>
> From: Guo Ren
>
> This patch is used to detect vector support status of CPU and use
> riscv_vsize to save the size of all the vector registers. It assumes
> all harts has the same capabili
Hi Tycho,
On Mon, May 25, 2020 at 10:36 PM Tycho Andersen wrote:
>
> On Mon, May 25, 2020 at 02:18:26PM +, guo...@kernel.org wrote:
> > From: Guo Ren
> >
> > Obviously, there is no need to recover a0-a7 in reject path.
> >
> > Previous modificat
+= -mbacktrace
endif
We'll upstream -mbacktrace to gcc 9 soon, sorry for the confusion. Thx
for your work on maintaining.
--
Best Regards
Guo Ren
ML: https://lore.kernel.org/linux-csky/
Hi Guenter,
> 在 2020年5月18日，上午1:52，Guenter Roeck 写道：
>
> Hi,
>
> On Wed, May 13, 2020 at 03:15:25PM +0800, Guo Ren wrote:
>> The implementation of show_stack will panic with wrong fp:
>>
>> addr= *fp++;
>>
>> because the fp isn't checked
Thx for explanation.
Acked-by: Guo Ren
On Wed, Oct 16, 2019 at 3:39 PM Sebastian Andrzej Siewior
wrote:
>
> On 2019-10-16 07:29:34 [+0800], Guo Ren wrote:
> > Could CONFIG_PREEMPT_RT be supported in csky ? Any arch backend porting ?
>
> It could. HIGH_RE
equire the same functionality which today
> depends on CONFIG_PREEMPT.
>
> Switch the entry code over to use CONFIG_PREEMPTION.
>
> Cc: Guo Ren
> Signed-off-by: Thomas Gleixner
> Signed-off-by: Sebastian Andrzej Siewior
> ---
> arch/csky/kernel/entry.S | 4 ++--
>
flow in kill system call.
>
> Signed-off-by: Mao Han
> Cc: Guo Ren
> ---
> arch/csky/Kconfig | 1 +
> arch/csky/include/asm/stackprotector.h | 29 +
> arch/csky/kernel/process.c | 6 ++
> 3 files changed, 36 inser
ernel/process.c | 2 +-
> arch/csky/mm/cachev1.c | 7 +++-
> arch/csky/mm/cachev2.c | 11 +-
> arch/csky/mm/dma-mapping.c | 76
> +---
> arch/csky/mm/init.c | 16
> arch/csky/mm/ioremap.c | 27 -
> 17 files changed, 291 insertions(+), 212 deletions(-)
--
Best Regards
Guo Ren
ML: https://lore.kernel.org/linux-csky/
Ok, I'll put in my tree :)
On Mon, Sep 23, 2019 at 10:36 PM Valentin Schneider
wrote:
>
> Since the enabling and disabling of IRQs within preempt_schedule_irq()
> is contained in a need_resched() loop, we don't need the outer arch
> code loop.
>
> Acked-by: Guo Ren
> Si
force to build kernel with -fno-omit-frame-pointer if perf
> > event is enabled
> >
> > Changes since v1:
> > - simplify implementation and code convention
> >
> > Cc: Paul Walmsley
> > Cc: Greentime Hu
> > Cc: Palmer Dabbelt
> > Cc: linux-r
Thx,
Acked by: Guo Ren
You may also modify others'
➜ linux-next git:(linux-next-for-v5.4) ✗ grep "const static" * -r
arch/csky/kernel/perf_event.c:const static struct of_device_id
csky_pmu_of_device_ids[] = {
arch/nds32/kernel/perf_event_cpu.c:const static struct of
Sure, no problem.
On Wed, Aug 28, 2019 at 10:39 PM Mike Rapoport wrote:
>
> Hi,
>
> On Wed, Aug 28, 2019 at 10:12:52PM +0800, Guo Ren wrote:
> > Acked-by: Guo Ren
>
> Do you mind taking it via csky tree?
>
> > On Wed, Aug 28, 2019 at 9:35 PM Mike Rapo
Acked-by: Guo Ren
On Wed, Aug 28, 2019 at 9:35 PM Mike Rapoport wrote:
>
> The csky implementation of free_initrd_mem() is an open-coded version of
> free_reserved_area() without poisoning.
>
> Remove it and make csky use the generic version of free_initrd_mem().
>
>
On Mon, Aug 26, 2019 at 4:03 PM Greentime Hu wrote:
>
> Hi Guo,
>
> Guo Ren 於 2019年8月24日 週六 上午8:54寫道：
> >
> > Please check CONFIG_FRAME_POINTER
> >
> > 1 *frame = *((struct stackframe *)frame->fp - 1);
> > This code is origionally from riscv/kernel/s
Thx Christoph,
On Mon, Aug 26, 2019 at 2:38 PM Christoph Hellwig wrote:
>
> On Thu, Aug 22, 2019 at 11:05:22AM +0800, guo...@kernel.org wrote:
> > From: Guo Ren
> >
> > 610 has vipt aliasing issue, so we need to finish the cache flush
> > apis mentioned in cachetl
llchain sampling on riscv platform.
> > The return address of leaf function is retrieved from pt_regs as
> > it is not saved in the outmost frame.
> >
> > Signed-off-by: Mao Han
> > Cc: Paul Walmsley
> > Cc: Greentime Hu
> > Cc: Palmer Dabbelt
> > Cc
invalidate_kernel_vmap_range functions to avoid data corruption when
> doing I/O on vmalloc/vmap ranges.
I'll give another patch for this issue
--
Best Regards
Guo Ren
ML: https://lore.kernel.org/linux-csky/
Thx Christoph
On Wed, Aug 21, 2019 at 10:17 AM Christoph Hellwig wrote:
>
> On Tue, Aug 20, 2019 at 08:34:29PM +0800, guo...@kernel.org wrote:
> > From: Guo Ren
> >
> > We prohibit non-aligned access in kernel mode, but some special NIC
> > driver needs to support
On Mon, Aug 19, 2019 at 2:21 AM Christoph Hellwig wrote:
>
> On Sun, Aug 18, 2019 at 10:20:18AM +0800, Guo Ren wrote:
> > > > Also change flag VM_ALLOC to VM_IOREMAP in get_vm_area_caller.
> > >
> > > Looks generally fine, but two comments:
> > >
>
Thx Christoph,
On Fri, Aug 16, 2019 at 3:03 PM Christoph Hellwig wrote:
>
> On Thu, Aug 15, 2019 at 07:28:57PM +0800, guo...@kernel.org wrote:
> > From: Guo Ren
> >
> > Implement the following apis to meet usage in different scenarios.
> >
> > - iore
ase keep the postcore_initcall next to the function it calls.
Ok. Change arch_initcall back to postcore_initcall. :)
--
Best Regards
Guo Ren
ML: https://lore.kernel.org/linux-csky/
Thx Arnd,
On Tue, Jul 30, 2019 at 11:22 PM Arnd Bergmann wrote:
>
> On Tue, Jul 30, 2019 at 5:11 PM Guo Ren wrote:
> > > > diff --git a/arch/csky/mm/dma-mapping.c b/arch/csky/mm/dma-mapping.c
> > > > cache_op(paddr, size, dma_wb_range);
Thx Arnd,
On Tue, Jul 30, 2019 at 9:29 PM Arnd Bergmann wrote:
>
> On Tue, Jul 30, 2019 at 2:15 PM wrote:
> >
> > From: Guo Ren
> >
> > If arch didn't define dma_r/wmb(), linux will use w/rmb instead. Csky
> > use bar.xxx to implement mb() and th
On Tue, Jul 30, 2019 at 9:29 PM Arnd Bergmann wrote:
>
> On Tue, Jul 30, 2019 at 2:15 PM wrote:
> >
> > From: Guo Ren
> >
> > If arch didn't define dma_r/wmb(), linux will use w/rmb instead. Csky
> > use bar.xxx to implement mb() and that will cause proble
Thx Arnd,
On Tue, Jul 30, 2019 at 9:43 PM Arnd Bergmann wrote:
>
> On Tue, Jul 30, 2019 at 2:16 PM wrote:
> > From: Guo Ren
>
> > diff --git a/arch/csky/mm/dma-mapping.c b/arch/csky/mm/dma-mapping.c
> > index 3f1ff9d..d8f0f81 100644
> > --- a/arch/csky/mm/dma
Hi Arnd,
On Mon, Jul 1, 2019 at 10:52 PM Arnd Bergmann wrote:
>
> On Sat, Jun 29, 2019 at 7:36 AM wrote:
> >
> > From: Guo Ren
> >
> > These codes are copied from glibc/string directory, they are the generic
> > implementation for string oper
On Thu, Jun 27, 2019 at 2:52 AM Arnaldo Carvalho de Melo
wrote:
>
> Em Wed, Jun 26, 2019 at 02:56:55PM +0800, Guo Ren escreveu:
> > Thx Mao,
> >
> > Approved!
>
> I guess I can take this as a:
>
> Acked-by: Guo Ren
>
> Or would this better be:
>
&
Thx Mao,
Approved!
Best Regards
Guo Ren
On Wed, Jun 26, 2019 at 2:53 PM Mao Han wrote:
>
> This patch add basic arch initialization and instruction associate support
> for csky.
>
> perf annotate --stdio2
> Samples: 161 of event 'cpu-clock:pppH', 4000 Hz, Event count (ap
Hi Andreas,
On Tue, Jun 25, 2019 at 9:25 AM Andreas Färber wrote:
>
> Am 25.06.19 um 02:45 schrieb Guo Ren:
> > Thx for the patch. No need seperate part into dtsi,
>
> Sorry, I know from many arm contributions that using a .dtsi is the
> right thing here. It logically se
ompatible = "ns16550a";
> + reg = <0x00403000 0x400>;
> + interrupts = <15>;
> + clock-frequency = <29491200>;
> + reg-shift = <2>;
> + reg-io-width = <1>;
> + };
> +
> + intc: interrupt-controller@50 {
> + compatible = "csky,gx6605s-intc";
> + reg = <0x0050 0x400>;
> + interrupt-controller;
> + #interrupt-cells = <1>;
> + };
> +
> + ehci_hcd: usb@90 {
> + compatible = "generic-ehci";
> + reg = <0x0090 0x400>;
> + interrupts = <59>;
> + };
> +
> + ohci_hcd0: usb@a0 {
> + compatible = "generic-ohci";
> + reg = <0x00a0 0x400>;
> + interrupts = <58>;
> + };
> +
> + ohci_hcd1: usb@b0 {
> + compatible = "generic-ohci";
> + reg = <0x00b0 0x400>;
> + interrupts = <57>;
> + };
> + };
> +};
> --
> 2.16.4
>
--
Best Regards
Guo Ren
ML: https://lore.kernel.org/linux-csky/
lk is on this thread:
https://lore.kernel.org/linux-arm-kernel/20190624102209.ngwtosgr5fvp3ler@willie-the-truck/T/#m92396a2f238c9eece660cdc0f275e787531d4ec1
>
> On Mon, Jun 24, 2019 at 12:04:29AM +0800, guo...@kernel.org wrote:
> > From: Guo Ren
> >
> > The hardware threads of one c
Sorry, I forgot delete arm's. It's mistake, no change arm64 file.
On Fri, Jun 21, 2019 at 6:10 PM Julien Grall wrote:
>
> Hi,
>
> On 21/06/2019 10:39, guo...@kernel.org wrote:
> > Signed-off-by: Guo Ren
> > Cc: Arnd Bergmann
> > Cc: Julien Grall
>
Acked-by: Guo Ren
thread_saved_pc should be used in unwind stack and I'll give another
patch to optimize the unwind flow for csky.
On Wed, Jun 12, 2019 at 7:22 PM Tobias Klauser wrote:
>
> These are used nowhere in the tree (except for some architectures which
> define them for thei
Hello Marc,
On Tue, Jun 4, 2019 at 7:54 PM Marc Zyngier wrote:
>
> On 04/06/2019 12:05, guo...@kernel.org wrote:
> > From: Guo Ren
> >
> > The csky,mpintc could deliver a external irq to one cpu or all cpus, but
> > it couldn't deliver a external irq to a group of
gt; space or user space, csky_pmu_event_init is called twice with no
> attr specified. Configuration will be overwritten with sampling in
> both kernel space and user space. --all-kernel/--all-user is
> useless without this patch applied.
>
> Signed-off-by: Mao Han
> Cc: Guo Ren
>
Hello Mao,
Nice job and see my comment below.
On Tue, Jun 4, 2019 at 10:25 AM Mao Han wrote:
>
> This patch add interrupt request and handler for csky pmu.
> perf can record on hardware event with this patch applied.
>
> Signed-off-by: Mao Han
> Cc: Guo Ren
> --
Hello Mao,
On Tue, Jun 4, 2019 at 10:25 AM Mao Han wrote:
>
> This patch change the csky pmu initialization from arch init to
> device init. The pmu can be configued with information from
> device tree(pmu device name, irq number and etc.).
>
> Signed-off-by: Mao
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