Hi Yajun,
On Tue, Nov 08, 2022 at 02:27:53AM +, Yajun Deng wrote:
> Hi Sachin,
> I didn't have a powerpc architecture machine. I don't know why this happened.
>
> Hi Mike,
> Do you have any suggestions?
You can try reproducing the bug qemu or work with Sachin to debug the
issue.
> I tested
On Tue, Nov 08, 2022 at 01:09:27AM +,
"Huang, Kai" wrote:
> On Mon, 2022-11-07 at 13:46 -0800, Isaku Yamahata wrote:
> > > On Fri, Nov 04, 2022, Isaku Yamahata wrote:
> > > > Thanks for the patch series. I the rebased TDX KVM patch series and it
> > > > worked.
> > > > Since cpu offline
On Wed, 26 Oct 2022 13:13:56 -0500, Brian King wrote:
> This patch fixes an issue reported when performing a live
> migration when multipath is configured with a short fast
> fail timeout of 5 seconds and also to have no_path_retry
> set to fail. In this scenario, all paths would go into the
>
On Thu, 2022-11-03 at 14:10 +1100, Benjamin Gray wrote:
> On Wed, 2022-11-02 at 10:11 +, Christophe Leroy wrote:
> > Le 25/10/2022 à 06:44, Benjamin Gray a écrit :
> > > + /*
> > > + * PTE allocation uses GFP_KERNEL which means we need to
> > > + * pre-allocate the PTE here
Commit 84582f9ed090 ("soc: fsl: qe: Avoid using gpio_to_desc()") changed
qe_pin_request() to request and hold GPIO corresponding to a given pin.
Unfortunately this does not work, as fhci-hcd requests these GPIOs
first, befor calling qe_pin_request() (see
On Fri, Nov 04, 2022 at 08:27:14PM +,
Sean Christopherson wrote:
> On Fri, Nov 04, 2022, Isaku Yamahata wrote:
> > Thanks for the patch series. I the rebased TDX KVM patch series and it
> > worked.
> > Since cpu offline needs to be rejected in some cases(To keep at least one
> > cpu
> > on
On Wed, 2022-11-02 at 23:18 +, Sean Christopherson wrote:
> Drop kvm_arch_check_processor_compat() and its support code now that
> all
> architecture implementations are nops.
>
> Signed-off-by: Sean Christopherson
> ---
> arch/arm64/kvm/arm.c | 7 +--
> arch/mips/kvm/mips.c
On Wed, 2022-11-02 at 23:18 +, Sean Christopherson wrote:
> Drop kvm_arch_init() and kvm_arch_exit() now that all implementations
> are nops.
>
> No functional change intended.
>
> Signed-off-by: Sean Christopherson
> ---
> arch/arm64/kvm/arm.c | 11 ---
>
On Wed, 2022-11-02 at 23:18 +, Sean Christopherson wrote:
> Move the guts of kvm_arch_init() into a new helper,
> __kvm_s390_init(),
> and invoke the new helper directly from kvm_s390_init() instead of
> bouncing through kvm_init(). Invoking kvm_arch_init() is the very
> first action
On Wed, 2022-11-02 at 23:18 +, Sean Christopherson wrote:
> Tag __kvm_s390_init() and its unique helpers as __init. These
> functions
> are only ever called during module_init(), but could not be tagged
> accordingly while they were invoked from the common kvm_arch_init(),
> which is not
On Wed, 2022-11-02 at 23:18 +, Sean Christopherson wrote:
> Drop kvm_arch_hardware_setup() and kvm_arch_hardware_unsetup() now
> that
> all implementations are nops.
>
> No functional change intended.
>
> Signed-off-by: Sean Christopherson
> ---
> arch/arm64/include/asm/kvm_host.h | 1 -
On Wed, 2022-11-02 at 23:18 +, Sean Christopherson wrote:
> Now that kvm_arch_hardware_setup() is called immediately after
> kvm_arch_init(), fold the guts of kvm_arch_hardware_(un)setup() into
> kvm_arch_{init,exit}() as a step towards dropping one of the hooks.
>
> No functional change
On Wed, 2022-11-02 at 23:18 +, Sean Christopherson wrote:
> In preparation for folding kvm_arch_hardware_setup() into
> kvm_arch_init(),
> unwind initialization one step at a time instead of simply calling
> kvm_arch_exit(). Using kvm_arch_exit() regardless of which
> initialization
> step
On Wed, 2022-11-02 at 23:18 +, Sean Christopherson wrote:
> Move the call to kvm_vfio_ops_exit() further up kvm_exit() to try and
> bring some amount of symmetry to the setup order in kvm_init(), and
> more
> importantly so that the arch hooks are invoked dead last by
> kvm_exit().
> This will
Hi!
On Mon, Nov 07, 2022 at 02:31:59PM +1100, Rohan McLure wrote:
> Add Kconfig option for enabling clearing of registers on arrival in an
> interrupt handler. This reduces the speculation influence of registers
> on kernel internals.
Assuming you are talking about existing PowerPC CPUs from the
On 07/11/2022 13:11:17, Nicholas Piggin wrote:
> On Sat Oct 29, 2022 at 2:00 AM AEST, Laurent Dufour wrote:
>> At boot time, the FDT is parsed to compute the number of CPUs.
>> In addition count the number of CPU nodes and export it.
>>
>> This is useful when building the FDT for a kexeced kernel
Le 07/11/2022 à 04:31, Rohan McLure a écrit :
> Add Kconfig option for enabling clearing of registers on arrival in an
> interrupt handler. This reduces the speculation influence of registers
> on kernel internals. The option will be consumed by 64-bit systems that
> feature speculation and wish
This is v3 of a series to prepare for threaded/atomic
printing. v2 is here [0]. This series focuses on reducing the
scope of the BKL console_lock. It achieves this by switching to
SRCU and a dedicated mutex for console list iteration and
modification, respectively. The console_lock will no longer
It is not reliable to check for CON_ENABLED in order to identify if a
console is registered. Use console_is_registered() instead.
Signed-off-by: John Ogness
---
drivers/tty/hvc/hvc_console.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/tty/hvc/hvc_console.c
Le 07/11/2022 à 13:45, Nicholas Piggin a écrit :
> On Thu Nov 3, 2022 at 6:26 PM AEST, Christophe Leroy wrote:
>> It contradicts commit a85c728cb5e1 ("powerpc/32: Don't use lmw/stmw for
>> saving/restoring non volatile regs")
>
> Hmm okay. Do you want to keep the #ifdef case in ppc_save_regs
On Thu Nov 3, 2022 at 6:26 PM AEST, Christophe Leroy wrote:
> It contradicts commit a85c728cb5e1 ("powerpc/32: Don't use lmw/stmw for
> saving/restoring non volatile regs")
Hmm okay. Do you want to keep the #ifdef case in ppc_save_regs for ppc32
to save ~124 bytes of text? I don't mind either
On Sat Nov 5, 2022 at 6:00 PM AEST, Christophe Leroy wrote:
>
>
> Le 04/11/2022 à 18:27, Andrew Donnellan a écrit :
> > powerpc unfortunately has too many places where we run stuff in real mode.
> >
> > With CONFIG_VMAP_STACK enabled, this means we need to be able to swap the
> > stack pointer to
On Mon Nov 7, 2022 at 10:58 AM AEST, Russell Currey wrote:
> On Mon, 2022-10-31 at 15:54 +1000, Nicholas Piggin wrote:
> > Most callers just want to validate an arbitrary kernel stack pointer,
> > some need a particular size. Make the size case the exceptional one
> > with an extra function.
> >
On Mon Nov 7, 2022 at 4:58 PM AEST, Benjamin Gray wrote:
> On Thu, 2022-11-03 at 11:39 +1100, Benjamin Gray wrote:
> > On Wed, 2022-11-02 at 09:56 +, Christophe Leroy wrote:
> > > By the way, 'extern' keyword is pointless and deprecated for
> > > functions
> > > prototypes, please don't add
On Thu Nov 3, 2022 at 6:35 PM AEST, Christophe Leroy wrote:
>
>
> Le 31/10/2022 à 13:07, Nicholas Piggin a écrit :
> > Override the generic module ELF check to provide a check for the ELF ABI
> > version. This becomes important if we allow big-endian ELF ABI V2 builds
> > but it doesn't hurt to
On Sat Oct 29, 2022 at 2:00 AM AEST, Laurent Dufour wrote:
> At boot time, the FDT is parsed to compute the number of CPUs.
> In addition count the number of CPU nodes and export it.
>
> This is useful when building the FDT for a kexeced kernel since we need to
> take in account the CPU node added
On Tue Oct 25, 2022 at 1:38 PM AEST, Rohan McLure wrote:
> Stack frames used by syscall handlers support random offsets as of
> commit f4a0318f278d (powerpc: add support for syscall stack randomization).
> Implement the same for general interrupt handlers, by applying the
> random stack offset and
On 11/4/22 13:07, Disha Goel wrote:
> On 11/4/22 12: 59 PM, Athira Rajeev wrote: On 03-Nov-2022, at 9: 45 PM,
> Ian Rogers wrote: On Wed, Nov 2, 2022 at 1: 36 AM
> Athira Rajeev
>
+linux-arch
FYI most preempt_enable_no_resched() calls outside of core scheduler
code come from kprobes copy-and-paste, and can possibly be fixed in
similar ways as this series. It's a bit of a footgun API that should
be banished from outside kernel/sched/, at least without an explicit
comment
On Fri Oct 21, 2022 at 3:29 AM AEST, Naveen N. Rao wrote:
> Ensure a more consistent pt_regs across kprobes, optprobes and
> KPROBES_ON_FTRACE:
> - Drop setting trap to 0x700 under optprobes. This is not accurate and
> is unnecessary. Instead, zero it out for both optprobes and
>
Le 06/11/2022 à 23:49, Rohan McLure a écrit :
> Replace occurrences of p{u,m,4}d_is_leaf with p{u,m,4}_leaf, as the
> latter is the name given to checking that a higher-level entry in
> multi-level paging contains a page translation entry (pte). This commit
> allows for p{u,m,4}d_leaf to be used
On Fri Oct 21, 2022 at 3:28 AM AEST, Naveen N. Rao wrote:
> preempt_enable_no_resched() is just the same as preempt_enable() when we
> are in a irqs disabled context. kprobe_handler() and the post/fault
> handlers are all called with irqs disabled. As such, convert those to
> just use
On Fri Oct 21, 2022 at 3:28 AM AEST, Naveen N. Rao wrote:
> Similar to x86 commit 2e62024c265aa6 ("kprobes/x86: Use preempt_enable()
> in optimized_callback()"), change powerpc optprobes to use
> preempt_enable() rather than preempt_enable_no_resched() since powerpc
> also removed irq disabling
On Fri Oct 21, 2022 at 3:28 AM AEST, Naveen N. Rao wrote:
> arch_prepare_kprobe() is called from register_kprobe() via
> prepare_kprobe(), or through register_aggr_kprobe(), both with the
> kprobe_mutex held. Per the comment for get_kprobe():
> /*
>* This routine is called either:
>* -
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