Excerpts from Christophe Leroy's message of December 8, 2021 7:38 pm:
>
>
> Le 01/12/2021 à 15:41, Nicholas Piggin a écrit :
>> To avoid any functional changes to radix paths when building with hash
>> MMU support disabled (and CONFIG_PPC_MM_SLICES=n), always define the
>> arch get_unmapped_area
Le 09/12/2021 à 09:25, Nicholas Piggin a écrit :
> Excerpts from Christophe Leroy's message of December 8, 2021 7:38 pm:
>>
>>
>> Le 01/12/2021 à 15:41, Nicholas Piggin a écrit :
>>> To avoid any functional changes to radix paths when building with hash
>>> MMU support disabled (and CONFIG_PPC_MM
Excerpts from Christophe Leroy's message of December 8, 2021 8:00 pm:
>
>
> Le 01/12/2021 à 15:41, Nicholas Piggin a écrit :
>> To avoid any functional changes to radix paths when building with hash
>> MMU support disabled (and CONFIG_PPC_MM_SLICES=n), always define the
>> arch get_unmapped_area
Excerpts from Michael Ellerman's message of December 7, 2021 11:00 pm:
> Nicholas Piggin writes:
>> 34 files changed, 173 insertions(+), 52 deletions(-)
>
>
> I was able to clean up some of the ifdefs a little with the changes
> below. I'll run these through some test builds and then squash the
On 08/12/2021, 16:21:29, Nathan Lynch wrote:
> Laurent Dufour writes:
>> On 07/12/2021, 18:07:50, Nathan Lynch wrote:
>>> Laurent Dufour writes:
On 07/12/2021, 15:32:39, Nathan Lynch wrote:
> Is there a reasonable fallback for VMs where this parameter doesn't
> exist? PowerVM partiti
Hello,
On Wed, Dec 08, 2021 at 08:51:47PM -0500, Nayna wrote:
>
> On 11/25/21 13:02, Michal Suchanek wrote:
> > Copy the code from s390x
> >
> > Signed-off-by: Michal Suchanek
> > ---
> > arch/powerpc/Kconfig| 11 +++
> > arch/powerpc/kexec/elf_64.c | 36 ++
Excerpts from Nicholas Piggin's message of December 9, 2021 6:25 pm:
> Excerpts from Christophe Leroy's message of December 8, 2021 7:38 pm:
>>
>>
>> Le 01/12/2021 à 15:41, Nicholas Piggin a écrit :
>>> To avoid any functional changes to radix paths when building with hash
>>> MMU support disable
Excerpts from Christophe Leroy's message of December 9, 2021 3:18 am:
> vma_mmu_pagesize() is only required for slices,
> otherwise there is a generic weak version doing the
> exact same thing.
>
> Move it to slice.c
>
Reviewed-by: Nicholas Piggin
> Signed-off-by: Christophe Leroy
> ---
> ar
Excerpts from Christophe Leroy's message of December 9, 2021 3:18 am:
> Unlike most architectures, powerpc can only define at runtime
> if it is going to use the generic arch_get_unmapped_area() or not.
>
> Today, powerpc has a copy of the generic arch_get_unmapped_area()
> because when selection
Excerpts from Christophe Leroy's message of December 9, 2021 3:18 am:
> Use the generic version of arch_get_unmapped_area() which
> is now available at all time instead of its copy
> radix__arch_get_unmapped_area()
>
> Instead of setting mm->get_unmapped_area() to either
> arch_get_unmapped_area()
>> From: Wang Qing
>>
>> of_find_device_by_node() takes a reference to the embedded struct device
>> which needs to be dropped when error return.
>
>...
>
>> data = devm_kzalloc(&pdev->dev, sizeof(*data), GFP_KERNEL);
>> if (!data) {
>> + put_device(&cpu_pdev->dev);
>
Excerpts from Christophe Leroy's message of December 9, 2021 3:18 am:
> Use the generic version of arch_hugetlb_get_unmapped_area()
> which is now available at all time.
>
> Signed-off-by: Christophe Leroy
> ---
> arch/powerpc/include/asm/book3s/64/hugetlb.h | 4 --
> arch/powerpc/mm/book3s64/r
Excerpts from Christophe Leroy's message of December 9, 2021 3:18 am:
> Select CONFIG_ARCH_WANT_DEFAULT_TOPDOWN_MMAP_LAYOUT and
> remove arch/powerpc/mm/mmap.c
>
> This change provides standard randomisation of mmaps.
>
> See commit 8b8addf891de ("x86/mm/32: Enable full randomization on i386
> an
Le 09/12/2021 à 11:15, Nicholas Piggin a écrit :
> Excerpts from Christophe Leroy's message of December 9, 2021 3:18 am:
>> Select CONFIG_ARCH_WANT_DEFAULT_TOPDOWN_MMAP_LAYOUT and
>> remove arch/powerpc/mm/mmap.c
>>
>> This change provides standard randomisation of mmaps.
>>
>> See commit 8b8addf
Excerpts from Christophe Leroy's message of December 9, 2021 8:22 pm:
>
>
> Le 09/12/2021 à 11:15, Nicholas Piggin a écrit :
>> Excerpts from Christophe Leroy's message of December 9, 2021 3:18 am:
>>> Select CONFIG_ARCH_WANT_DEFAULT_TOPDOWN_MMAP_LAYOUT and
>>> remove arch/powerpc/mm/mmap.c
>>>
>
https://bugzilla.kernel.org/show_bug.cgi?id=215217
--- Comment #6 from Erhard F. (erhar...@mailbox.org) ---
Ok I cheked that out. There are already some in the Makefile:
CFLAGS_cputable.o += $(DISABLE_LATENT_ENTROPY_PLUGIN)
CFLAGS_prom_init.o += $(DISABLE_LATENT_ENTROPY_PLUGIN)
CFLAGS_btext.o +=
https://bugzilla.kernel.org/show_bug.cgi?id=215217
--- Comment #7 from Erhard F. (erhar...@mailbox.org) ---
Created attachment 299967
--> https://bugzilla.kernel.org/attachment.cgi?id=299967&action=edit
kernel .config (5.16-rc4 + CFLAGS_setup_32.o +=... , PowerMac G4 DP)
--
You may reply to th
https://bugzilla.kernel.org/show_bug.cgi?id=215217
--- Comment #8 from Christophe Leroy (christophe.le...@csgroup.eu) ---
early_32.o should likely also have DISABLE_LATENT_ENTROPY_PLUGIN, maybe even
more important that for setup_32.o
--
You may reply to this email to add a comment.
You are rece
Nicholas Piggin writes:
> Excerpts from Christophe Leroy's message of December 9, 2021 8:22 pm:
>>
>>
>> Le 09/12/2021 à 11:15, Nicholas Piggin a écrit :
>>> Excerpts from Christophe Leroy's message of December 9, 2021 3:18 am:
Select CONFIG_ARCH_WANT_DEFAULT_TOPDOWN_MMAP_LAYOUT and
r
Le 09/12/2021 à 12:22, Michael Ellerman a écrit :
> Nicholas Piggin writes:
>
>> Excerpts from Christophe Leroy's message of December 9, 2021 8:22 pm:
>>>
>>>
>>> Le 09/12/2021 à 11:15, Nicholas Piggin a écrit :
Excerpts from Christophe Leroy's message of December 9, 2021 3:18 am:
> Se
https://bugzilla.kernel.org/show_bug.cgi?id=214913
Michael Ellerman (mich...@ellerman.id.au) changed:
What|Removed |Added
Status|ASSIGNED|NEEDINFO
---
We have a general signal fuzzer, sigfuz, which can modify the MSR & NIP
before sigreturn. But the chance of it hitting a kernel address and also
clearing MSR_PR is fairly slim.
So add a specific test of sigreturn to a kernel address, both with and
without attempting to clear MSR_PR (which the kern
Laurent Dufour writes:
> On 08/12/2021, 16:21:29, Nathan Lynch wrote:
>> Laurent Dufour writes:
>>> On 07/12/2021, 18:07:50, Nathan Lynch wrote:
Laurent Dufour writes:
> On 07/12/2021, 15:32:39, Nathan Lynch wrote:
>> Is there a reasonable fallback for VMs where this parameter doesn
Hello,
On Wed, Dec 08, 2021 at 08:50:54PM -0500, Nayna wrote:
>
> On 11/25/21 13:02, Michal Suchanek wrote:
> > Hello,
>
> Hi Michael,
>
> >
> > This is resend of the KEXEC_SIG patchset.
> >
> > The first patch is new because it'a a cleanup that does not require any
> > change to the module v
Mahesh Salgaonkar writes:
> To avoid this issue, fix the pci hotplug driver (rpaphp) to return an error
> if the slot presence state can not be detected immediately. Current
> implementation uses rtas_get_sensor() API which blocks the slot check state
> until rtas call returns success. Change rpap
Mahesh J Salgaonkar writes:
> On 2021-11-29 22:53:41 Mon, Nathan Lynch wrote:
>> Mahesh Salgaonkar writes:
>> >
>> > However on certain PHB failures, the rtas call get-sesnor-state() returns
>> > extended busy error (9902) until PHB is recovered by phyp. Once PHB is
>> > recovered, the get-sensor
On 09/12/2021, 14:53:31, Nathan Lynch wrote:
> Laurent Dufour writes:
>> On 08/12/2021, 16:21:29, Nathan Lynch wrote:
>>> Laurent Dufour writes:
On 07/12/2021, 18:07:50, Nathan Lynch wrote:
> Laurent Dufour writes:
>> On 07/12/2021, 15:32:39, Nathan Lynch wrote:
>>> Is there a r
Le 09/12/2021 à 07:08, Michael Ellerman a écrit :
> Christophe Leroy writes:
>> Le 07/12/2021 à 11:34, Maxime Bizon a écrit :
>>>
>>> On Tue, 2021-12-07 at 06:10 +, Christophe Leroy wrote:
>>>
>>> Hello,
>>>
>>> With the patch applied and
>>>
>>> CONFIG_DEBUG_PAGEALLOC=y
>>> CONFIG_DEBUG_PAG
On 11/21/21 13:54, David Woodhouse wrote:
-kvm-objs := $(common-objs) kvm-s390.o intercept.o interrupt.o priv.o sigp.o
+kvm-objs := kvm-s390.o intercept.o interrupt.o priv.o sigp.o
kvm-objs += diag.o gaccess.o guestdbg.o vsie.o pv.o
"kvm-y +=" here (for both lines) would be nicer, it's con
On 11/21/21 13:54, David Woodhouse wrote:
From: David Woodhouse
It's all fairly baroque but in the end, I don't think there's any reason
for $(KVM)/irqchip.o to have been handled differently, as they all end
up in $(kvm-y) in the end anyway, regardless of whether they get there
via $(common-obj
Sorry for the late review...
On 11/21/21 13:54, David Woodhouse wrote:
+EXPORT_SYMBOL_GPL(kvm_gfn_to_pfn_cache_check);
+
+static void __release_gpc(struct kvm *kvm, kvm_pfn_t pfn, void *khva,
+ gpa_t gpa, bool dirty)
+{
+ /* Unmap the old page if it was mapped befor
On 11/21/21 13:54, David Woodhouse wrote:
Introduce the basic concept of 2 level event channels for kernel delivery,
which is just a simple matter of a few test_and_set_bit calls on a mapped
shared info page.
This can be used for routing MSI of passthrough devices to PIRQ event
channels in a Xen
On Thu, 2021-12-09 at 19:34 +0100, Paolo Bonzini wrote:
> > As in the previous two rounds, the last patch (this time patch 12) is
> > included as illustration of how we*might* use this for fixing the UAF
> > bugs in nesting, but isn't intended to be applied as-is. Patches 1-11 are.
>
> Queued 1-7
On 12/9/21 19:47, David Woodhouse wrote:
As in the previous two rounds, the last patch (this time patch 12) is
included as illustration of how we*might* use this for fixing the UAF
bugs in nesting, but isn't intended to be applied as-is. Patches 1-11 are.
Queued 1-7, will be on kvm/next tomorro
Em Mon, Dec 06, 2021 at 02:47:45PM +0530, Kajol Jain escreveu:
> Patchset adds new macros for mem_hops field which can be
> used to represent remote-node, socket and board level details.
>
> Currently the code had macro for HOPS_0, which corresponds
> to data coming from another core but same node
On 11/25/21 13:02, Michal Suchanek wrote:
Copy the code from s390x
Signed-off-by: Michal Suchanek
---
arch/powerpc/Kconfig| 11 +++
arch/powerpc/kexec/elf_64.c | 36
2 files changed, 47 insertions(+)
diff --git a/arch/powerpc/Kconfig b/a
he return value of kzalloc() needs to be checked.
To avoid use of null pointer in case of the failure of alloc.
Fixes: db89ccbe52c7 ("PCI/AER: Define aer_stats structure for AER capable
devices")
Signed-off-by: Jiasheng Jiang
---
drivers/pci/pcie/aer.c | 2 ++
1 file changed, 2 insertions(+)
d
On Thu, 2021-12-09 at 19:34 +0100, Paolo Bonzini wrote:
> Sorry for the late review...
NP, very useful fixes. Thanks. Incremental patch looks like this. It
passes the xen_shinfo_test self-test; will test it with real Xen guests
tomorrow and repost based on your kvm/next tree once it shows up.
di
https://bugzilla.kernel.org/show_bug.cgi?id=215285
Bug ID: 215285
Summary: power9 le: amdgpu: *ERROR* hw_init of IP block
failed -22
Product: Platform Specific/Hardware
Version: 2.5
Kernel Version: 5.15.6
Hardware: PPC
On 12/9/21 04:21, Michal Suchánek wrote:
Hello,
Hi,
On Wed, Dec 08, 2021 at 08:51:47PM -0500, Nayna wrote:
On 11/25/21 13:02, Michal Suchanek wrote:
Copy the code from s390x
Signed-off-by: Michal Suchanek
---
arch/powerpc/Kconfig| 11 +++
arch/powerpc/kexec/elf_64.c |
On 12/9/21 21:40, David Woodhouse wrote:
NP, very useful fixes. Thanks. Incremental patch looks like this. It
passes the xen_shinfo_test self-test; will test it with real Xen guests
tomorrow and repost based on your kvm/next tree once it shows up.
Compared to the review it's missing this hunk:
On Thu, 2021-12-09 at 23:34 +0100, Paolo Bonzini wrote:
> Compared to the review it's missing this hunk:
>
> @@ -265,7 +265,7 @@ void kvm_gfn_to_pfn_cache_unmap(struct kvm *kvm, struct
> gfn_to_pfn_cache *gpc)
>
> gpc->valid = false;
>
> - old_khva = gpc->khva;
> + old_khva
From: Zi Yan
In isolate_migratepages_block(), a !PageLRU tail page can be encountered
when the page is larger than a pageblock. Use compound head page for the
checks inside and skip the entire compound page when isolation succeeds.
Signed-off-by: Zi Yan
---
mm/compaction.c | 10 +++---
1 f
From: Zi Yan
Hi all,
This patchset tries to remove the MAX_ORDER - 1 alignment requirement for CMA
and alloc_contig_range(). It prepares for my upcoming changes to make MAX_ORDER
adjustable at boot time[1].
The MAX_ORDER - 1 alignment requirement comes from that alloc_contig_range()
isolates pa
From: Zi Yan
alloc_migration_target() is used by alloc_contig_range() and non-LRU
movable compound pages can be migrated. Current code does not allocate the
right page size for such pages. Check THP precisely using
is_transparent_huge() and add allocation support for non-LRU compound
pages.
Sign
From: Zi Yan
This is done in addition to MIGRATE_ISOLATE pageblock merge avoidance.
It prepares for the upcoming removal of the MAX_ORDER-1 alignment
requirement for CMA and alloc_contig_range().
MIGRARTE_HIGHATOMIC should not merge with other migratetypes like
MIGRATE_ISOLATE and MIGRARTE_CMA[1
From: Zi Yan
alloc_contig_range() worked at MAX_ORDER-1 granularity to avoid merging
pageblocks with different migratetypes. It might unnecessarily convert
extra pageblocks at the beginning and at the end of the range. Change
alloc_contig_range() to work at pageblock granularity.
It is done by r
From: Zi Yan
Now alloc_contig_range() works at pageblock granularity. Change CMA
allocation, which uses alloc_contig_range(), to use pageblock_order
alignment.
Signed-off-by: Zi Yan
---
include/linux/mmzone.h | 5 +
kernel/dma/contiguous.c | 2 +-
mm/cma.c| 6 ++
mm/pa
From: Zi Yan
CMA only requires pageblock alignment now. Change CMA alignment in
fadump too.
Signed-off-by: Zi Yan
---
arch/powerpc/include/asm/fadump-internal.h | 4 +---
1 file changed, 1 insertion(+), 3 deletions(-)
diff --git a/arch/powerpc/include/asm/fadump-internal.h
b/arch/powerpc/inc
From: Zi Yan
alloc_contig_range() now only needs to be aligned to pageblock_order,
drop virtio_mem size requirement that it needs to be the max of
pageblock_order and MAX_ORDER.
Signed-off-by: Zi Yan
---
drivers/virtio/virtio_mem.c | 6 ++
1 file changed, 2 insertions(+), 4 deletions(-)
d
Christophe Leroy writes:
> Le 09/12/2021 à 12:22, Michael Ellerman a écrit :
>> Nicholas Piggin writes:
>>
>>> Excerpts from Christophe Leroy's message of December 9, 2021 8:22 pm:
Le 09/12/2021 à 11:15, Nicholas Piggin a écrit :
> Excerpts from Christophe Leroy's message of D
allmodconfig
i386 randconfig-c001-20211209
powerpc randconfig-c003-20211209
x86_64 allyesconfig
arc axs103_smp_defconfig
powerpc mgcoge_defconfig
armmvebu_v7_defconfig
allmodconfig
i386 randconfig-c001-20211209
powerpc randconfig-c003-20211209
x86_64 allyesconfig
arc axs103_smp_defconfig
powerpc mgcoge_defconfig
armmvebu_v7_defconfig
m68k
On 12/9/21 2:00 AM, Michael Ellerman wrote:
> Russell Currey writes:
>> On Tue, 2021-12-07 at 09:44 -0500, Joe Lawrence wrote:
>>> On 11/23/21 3:15 AM, Russell Currey wrote:
>>>
>>> [[ cc += livepatching list ]]
>>>
>>> Hi Russell,
>>>
>>> Thanks for writing a minimal fix for stable / backporting.
Arnaldo Carvalho de Melo writes:
> Em Mon, Dec 06, 2021 at 02:47:45PM +0530, Kajol Jain escreveu:
>> Patchset adds new macros for mem_hops field which can be
>> used to represent remote-node, socket and board level details.
>>
>> Currently the code had macro for HOPS_0, which corresponds
>> to da
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