When we have VMAP stack, exception prolog 1 sets r1, not r11.
Fixes: da7bb43ab9da ("powerpc/32: Fix vmap stack - Properly set r1 before
activating MMU")
Fixes: d2e006036082 ("powerpc/32: Use SPRN_SPRG_SCRATCH2 in exception prologs")
Cc: sta...@vger.kernel.org
Signed-off-by: Christophe Leroy
---
https://bugzilla.kernel.org/show_bug.cgi?id=210749
--- Comment #2 from Erhard F. (erhar...@mailbox.org) ---
Created attachment 294285
--> https://bugzilla.kernel.org/attachment.cgi?id=294285&action=edit
dmesg (kernel 5.9.16, Talos II)
Hmm... does not seem to happen on kernel 5.9.x.
--
You may
On Tue, Nov 17, 2020 at 12:50:31PM -0600, Tyrel Datwyler wrote:
> The vfcFrame correlation field is 64bit handle that is intended to trace
> I/O operations through both the client stack and VIOS stack when the
> underlying physical FC adapter supports tagging.
>
> Tag vfcFrames with the associated
Excerpts from Boqun Feng's message of November 14, 2020 1:30 am:
> Hi Nicholas,
>
> On Wed, Nov 11, 2020 at 09:07:23PM +1000, Nicholas Piggin wrote:
>> All the cool kids are doing it.
>>
>> Signed-off-by: Nicholas Piggin
>> ---
>> arch/powerpc/include/asm/atomic.h | 681 ++-
Excerpts from Christophe Leroy's message of December 20, 2020 9:43 pm:
>
>
> Le 20/12/2020 à 00:48, Nicholas Piggin a écrit :
>> This allows some nest MMU features to be compiled away if coprocessor
>> support is not selected.
>>
>> Signed-off-by: Nicholas Piggin
>> ---
>> arch/powerpc/Kconfi
Excerpts from Christophe Leroy's message of December 20, 2020 9:37 pm:
>
>
> Le 20/12/2020 à 00:48, Nicholas Piggin a écrit :
>> This allows the function to be entirely noped if hash support is
>> compiled out (not possible yet).
>>
>> Signed-off-by: Nicholas Piggin
>> ---
>> arch/powerpc/inc
Excerpts from Christophe Leroy's message of December 21, 2020 4:04 pm:
>
>
> Le 21/12/2020 à 04:22, Nicholas Piggin a écrit :
>> Queued spinlocks have shown to have good performance and fairness
>> properties even on smaller (2 socket) POWER systems. This selects
>> them automatically for 64s. Fo
On Mon, Dec 21, 2020 at 04:42:23PM +, David Laight wrote:
> From: Segher Boessenkool
> > Sent: 21 December 2020 16:32
> >
> > On Mon, Dec 21, 2020 at 04:17:21PM +0100, Christophe Leroy wrote:
> > > Le 21/12/2020 à 04:27, Xiaoming Ni a écrit :
> > > >Since the commit 2b0e86cc5de6 ("powerpc/fsl_
From: Segher Boessenkool
> Sent: 21 December 2020 16:32
>
> On Mon, Dec 21, 2020 at 04:17:21PM +0100, Christophe Leroy wrote:
> > Le 21/12/2020 à 04:27, Xiaoming Ni a écrit :
> > >Since the commit 2b0e86cc5de6 ("powerpc/fsl_booke/32: implement KASLR
> > >infrastructure"), the powerpc system is rea
On Mon, Dec 21, 2020 at 04:17:21PM +0100, Christophe Leroy wrote:
> Le 21/12/2020 à 04:27, Xiaoming Ni a écrit :
> >Since the commit 2b0e86cc5de6 ("powerpc/fsl_booke/32: implement KASLR
> >infrastructure"), the powerpc system is ready to support KASLR.
> >To reduces the risk of invalidating address
Le 21/12/2020 à 04:27, Xiaoming Ni a écrit :
Since the commit 2b0e86cc5de6 ("powerpc/fsl_booke/32: implement KASLR
infrastructure"), the powerpc system is ready to support KASLR.
To reduces the risk of invalidating address randomization, don't print the
EIP/LR hex values in dump_stack() and sh
On Mon, 21 Dec 2020 13:08:53 +0100
Greg Kurz wrote:
> Hi Shiva,
>
> On Mon, 30 Nov 2020 09:16:39 -0600
> Shivaprasad G Bhat wrote:
>
> > The patch adds support for async hcalls at the DRC level for the
> > spapr devices. To be used by spapr-scm devices in the patch/es to follow.
> >
> > Signe
On Mon, 30 Nov 2020 09:16:14 -0600
Shivaprasad G Bhat wrote:
> The nvdimm devices are expected to ensure write persistent during power
> failure kind of scenarios.
>
> The libpmem has architecture specific instructions like dcbf on power
> to flush the cache data to backend nvdimm device during
On Mon, 30 Nov 2020 09:17:24 -0600
Shivaprasad G Bhat wrote:
> When the persistent memory beacked by a file, a cpu cache flush instruction
> is not sufficient to ensure the stores are correctly flushed to the media.
>
> The patch implements the async hcalls for flush operation on demand from the
Hi Shiva,
On Mon, 30 Nov 2020 09:16:39 -0600
Shivaprasad G Bhat wrote:
> The patch adds support for async hcalls at the DRC level for the
> spapr devices. To be used by spapr-scm devices in the patch/es to follow.
>
> Signed-off-by: Shivaprasad G Bhat
> ---
The overall idea looks good but I t
On Sat, 7 Nov 2020 23:49:38 +0800, xiakaixu1...@gmail.com wrote:
> Fix the following coccicheck warning:
>
> ./arch/powerpc/kvm/booke.c:503:6-16: WARNING: Comparison to bool
> ./arch/powerpc/kvm/booke.c:505:6-17: WARNING: Comparison to bool
> ./arch/powerpc/kvm/booke.c:507:6-16: WARNING: Compariso
On Sat, 7 Nov 2020 14:26:22 +0800, xiakaixu1...@gmail.com wrote:
> Fix the following coccinelle warnings:
>
> ./arch/powerpc/kvm/book3s_xics.c:476:3-15: WARNING: Assignment of 0/1 to bool
> variable
> ./arch/powerpc/kvm/book3s_xics.c:504:3-15: WARNING: Assignment of 0/1 to bool
> variable
Appli
On Sun, 13 Dec 2020 19:26:22 +0100, Vincent Stehlé wrote:
> The DMA address returned by dma_map_single() should be checked with
> dma_mapping_error(). Fix the ps3stor_setup() function accordingly.
Applied to powerpc/next.
[1/1] powerpc/ps3: use dma_mapping_error()
https://git.kernel.org/po
On Wed, 25 Nov 2020 14:15:51 +1100, Michael Ellerman wrote:
> Add a phony target for ppc64le_allnoconfig, which tests some
> combinations of CONFIG symbols that aren't covered by any of our
> defconfigs.
Applied to powerpc/next.
[1/1] powerpc/configs: Add ppc64le_allnoconfig target
https://
On Fri, 23 Oct 2020 15:00:02 +1100, Michael Ellerman wrote:
> This makes it easy to disable building with -Werror:
>
> $ make defconfig
> $ grep WERROR .config
> # CONFIG_PPC_DISABLE_WERROR is not set
> CONFIG_PPC_WERROR=y
>
> [...]
Applied to powerpc/next.
[1/1] powerpc: Add config fra
On Tue, 8 Dec 2020 18:57:08 -0300, Leonardo Bras wrote:
> According to ISAv3.1 and ISAv3.0b, the msgsndp is described to split RB in:
> msgtype <- (RB) 32:36
> payload <- (RB) 37:63
> t <- (RB) 57:63
>
> The current way of getting 'msgtype', and 't' is missing their MSB:
> msgtype: ((arg >>
On Fri, 11 Dec 2020 15:59:54 +0100, Laurent Dufour wrote:
> When attempting to remove by index a set of LMB a lot of messages are
> displayed on the console, even when everything goes fine:
>
> pseries-hotplug-mem: Attempting to hot-remove LMB, drc index 802d
> Offlined Pages 4096
> pseries
On Sat, 12 Dec 2020 13:41:25 + (UTC), Christophe Leroy wrote:
> Commit 7bfe54b5f165 ("powerpc/mm: Refactor the floor/ceiling check in
> hugetlb range freeing functions") inadvertely removed the mask
> applied to start parameter in those two functions, leading to the
> following crash on power9.
On Thu, 15 Oct 2020 10:52:20 + (UTC), Christophe Leroy wrote:
> ppc-linux-objdump -d vmlinux | grep -e "" -e
> "<__csum_partial>"
>
> With gcc9 I get:
>
> c0017ef8 <__csum_partial>:
> c00182fc: 4b ff fb fd bl c0017ef8 <__csum_partial>
> c0018478:
On Fri, 11 Dec 2020 13:11:41 +1100, Andrew Donnellan wrote:
> Sometimes we can't read an error log from OPAL, and we print an error
> message accordingly. But the OPAL userspace tools seem to like retrying a
> lot, in which case we flood the kernel log with a lot of messages.
>
> Change pr_err() t
On Tue, 15 Dec 2020 03:56:18 -0500, Athira Rajeev wrote:
> Threshold Event Counter Multiplier (TECM) is part of Monitor Mode
> Control Register A (MMCRA). This field along with Threshold Event
> Counter Exponent (TECE) is used to get threshould counter value.
> In Power10, this is a 8bit field, so
On Mon, Dec 21, 2020 at 7:44 AM Michael Ellerman wrote:
> Andy Shevchenko writes:
> > On Fri, Dec 18, 2020 at 4:37 PM Enrico Weigelt, metux IT consult
> > wrote:
> >
> >> + if (printk_ratelimit())
> >> + pr_warn("spurious IRQ: irq=%d hwirq=%d
> >> nr_irqs=%d\
On 12/21/20 11:10 AM, Michael Ellerman wrote:
> Kajol Jain writes:
>> hv_24x7 performance monitoring unit creates list of supported events
>> from the event catalog obtained via HCALL. hv_24x7 catalog could also
>> contain invalid or dummy events (with names like FREE_* or CPM_FREE_*
>> and RES
Le 21/12/2020 à 08:42, Cédric Le Goater a écrit :
It fixes these W=1 compile error :
../arch/powerpc/platforms/pseries/eeh_pseries.c:697:5: error: no previous
prototype for ‘pseries_send_allow_unfreeze’ [-Werror=missing-prototypes]
697 | int pseries_send_allow_unfreeze(struct pci_dn *pdn,
Le 21/12/2020 à 08:42, Cédric Le Goater a écrit :
It fixes this W=1 compile error :
../arch/powerpc/kernel/watchdog.c:250:6: error: no previous prototype for
‘soft_nmi_interrupt’ [-Werror=missing-prototypes]
250 | void soft_nmi_interrupt(struct pt_regs *regs)
| ^~~
Le 21/12/2020 à 08:42, Cédric Le Goater a écrit :
It fixes this W=1 compile error :
../arch/powerpc/mm/book3s64/hash_utils.c:1867:6: error: no previous prototype
for ‘hpte_insert_repeating’ [-Werror=missing-prototypes]
1867 | long hpte_insert_repeating(unsigned long hash, unsigned long vpn
Le 21/12/2020 à 08:42, Cédric Le Goater a écrit :
It fixes W=1 this compile error :
Please give more details on why it can be removed.
Has it been used in the past and its user was removed by a commit ?
Has it never been used ?
../arch/powerpc/kernel/optprobes.c:149:6: error: no previous
Le 21/12/2020 à 08:42, Cédric Le Goater a écrit :
Fixes these W=1 errors :
Explain why it can be made static, not just that it does fix a W=1 compile
error,
because there are several possible ways to fix such a warning.
Also explain why you need to add asm/asm-prototypes.h
../arch/power
Le 21/12/2020 à 08:42, Cédric Le Goater a écrit :
It fixes this W=1 compile error:
Explain why it can be made static, not just that it does fix a W=1 compile
error,
because there are several possible ways to fix such a warning.
../arch/powerpc/platforms/pseries/ras.c:125:12: error: no p
Le 21/12/2020 à 08:42, Cédric Le Goater a écrit :
It fixes this W=1 compile error:
Explain why it can be made static, not just that it does fix a W=1 compile
error,
because there are several possible ways to fix such a warning.
../arch/powerpc/platforms/pseries/eeh_pseries.c:46:6: error:
Le 21/12/2020 à 08:42, Cédric Le Goater a écrit :
The last use of 'status' was removed in 2012. Remove the variable to
fix this W=1 compile error.
../arch/powerpc/platforms/pseries/ras.c: In function ‘ras_epow_interrupt’:
../arch/powerpc/platforms/pseries/ras.c:318:6: error: variable ‘status’
This fixes these W=1 compile errors:
../arch/powerpc/kvm/book3s_hv_builtin.c:425:6: error: no previous prototype for
‘kvmppc_read_intr’ [-Werror=missing-prototypes]
425 | long kvmppc_read_intr(void)
| ^~~~
../arch/powerpc/kvm/book3s_hv_builtin.c:652:6: error: no previous
It fixes these W=1 compile error :
../arch/powerpc/platforms/pseries/eeh_pseries.c:697:5: error: no previous
prototype for ‘pseries_send_allow_unfreeze’ [-Werror=missing-prototypes]
697 | int pseries_send_allow_unfreeze(struct pci_dn *pdn,
| ^~~
Cc: Frederic B
It fixes these W=1 compile errors :
CC [M] arch/powerpc/kvm/book3s_64_mmu_hv.o
../arch/powerpc/kvm/book3s_64_mmu_hv.c:879:5: error: no previous prototype for
‘kvm_unmap_hva_range_hv’ [-Werror=missing-prototypes]
879 | int kvm_unmap_hva_range_hv(struct kvm *kvm, unsigned long start,
unsigned
It fixes this W=1 compile error :
../arch/powerpc/kernel/watchdog.c:250:6: error: no previous prototype for
‘soft_nmi_interrupt’ [-Werror=missing-prototypes]
250 | void soft_nmi_interrupt(struct pt_regs *regs)
| ^~
Cc: Nicholas Piggin
Signed-off-by: Cédric Le Goater
It fixes this W=1 compile error :
../arch/powerpc/mm/hugetlbpage.c:220:12: error: no previous prototype for
‘pseries_alloc_bootmem_huge_page’ [-Werror=missing-prototypes]
220 | int __init pseries_alloc_bootmem_huge_page(struct hstate *hstate)
|^~~
It fixes this W=1 compile error :
../arch/powerpc/mm/book3s64/pgtable.c:411:6: error: no previous prototype for
‘arch_report_meminfo’ [-Werror=missing-prototypes]
411 | void arch_report_meminfo(struct seq_file *m)
| ^~~
Cc: "Aneesh Kumar K.V"
Signed-off-by: Cédric L
It fixes this W=1 compile error :
../arch/powerpc/mm/book3s64/slb.c:380:6: error: no previous prototype for
‘preload_new_slb_context’ [-Werror=missing-prototypes]
380 | void preload_new_slb_context(unsigned long start, unsigned long sp)
| ^~~
Cc: "Aneesh Kumar K.
It fixes W=1 this compile error :
../arch/powerpc/kernel/optprobes.c:149:6: error: no previous prototype for
‘patch_imm32_load_insns’ [-Werror=missing-prototypes]
149 | void patch_imm32_load_insns(unsigned int val, kprobe_opcode_t *addr)
Cc: Jordan Niethe
Signed-off-by: Cédric Le Goater
---
It fixes these W=1 compile errors :
../arch/powerpc/platforms/pseries/setup.c:610:17: error: no previous prototype
for ‘pseries_get_iov_fw_value’ [-Werror=missing-prototypes]
610 | resource_size_t pseries_get_iov_fw_value(struct pci_dev *dev, int resno,
| ^
It fixes W=1 this compile error :
../arch/powerpc/kernel/optprobes.c:149:6: error: no previous prototype for
‘patch_imm64_load_insns’ [-Werror=missing-prototypes]
149 | void patch_imm64_load_insns(unsigned int val, kprobe_opcode_t *addr)
Cc: Jordan Niethe
Signed-off-by: Cédric Le Goater
---
It fixes these W=1 compile errors :
../arch/powerpc/kernel/mce.c:591:14: error: no previous prototype for
‘machine_check_early’ [-Werror=missing-prototypes]
591 | long notrace machine_check_early(struct pt_regs *regs)
| ^~~
../arch/powerpc/kernel/mce.c:725:6:
It fixes these W=1 compile errors :
../arch/powerpc/platforms/pseries/pci.c:58:5: error: no previous prototype for
‘pseries_send_map_pe’ [-Werror=missing-prototypes]
58 | int pseries_send_map_pe(struct pci_dev *pdev,
| ^~~
../arch/powerpc/platforms/pseries/pci.c:91:6:
It fixes this W=1 compile error:
../arch/powerpc/platforms/pseries/ras.c:125:12: error: no previous prototype
for ‘init_ras_hotplug_IRQ’ [-Werror=missing-prototypes]
125 | int __init init_ras_hotplug_IRQ(void)
|^~~~
Fixes: c9dccf1d074a ("powerpc/pseries: Enabl
It fixes this W=1 compile error :
../arch/powerpc/kernel/smp.c:579:6: error: no previous prototype for
‘debugger_ipi_callback’ [-Werror=missing-prototypes]
579 | void debugger_ipi_callback(struct pt_regs *regs)
| ^
Signed-off-by: Cédric Le Goater
---
arch/power
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