On Tue, Dec 14, 2021 at 11:07:34AM -0600, john.p.donne...@oracle.com wrote:
> Is CONFIG_ZONE_DMA even needed anymore in x86_64 ?
Yes. There are still plenty of addressing challenged devices, mostly
ISA-like but also a few PCI/PCIe ones.
___
kexec mail
On Wed, Dec 15, 2021 at 07:03:35AM +, Hyeonggon Yoo wrote:
> I'm not sure that allocating from ZONE_DMA32 instead of ZONE_DMA
> for kdump kernel is nice way to solve this problem.
What is the problem with zones in kdump kernels?
> Devices that requires ZONE_DMA memory is rare but we still sup
On Wed, Dec 15, 2021 at 04:48:26AM +, Hyeonggon Yoo wrote:
>
> Hello Baoquan and Vlastimil.
>
> I'm not sure allowing ZONE_DMA32 for kdump kernel is nice way to solve
> this problem. Devices that requires ZONE_DMA is rare but we still
> support them.
>
> If we allow ZONE_DMA32 for ZONE_DMA i
On 12/14/21 at 03:24pm, Borislav Petkov wrote:
> On Tue, Dec 14, 2021 at 05:56:57PM +0800, Baoquan He wrote:
> > Ah, OK, I see the new paragraph from you added in below commit.
>
> That is supposed to make it absolutely clear and explicit. There are
> other hints as to what a subsequent SOB means
From: Minghao Chi
Return value from kimage_add_entry() directly instead
of taking this in another redundant variable.
Reported-by: Zeal Robot
Signed-off-by: Minghao Chi
---
kernel/kexec_core.c | 10 ++
1 file changed, 2 insertions(+), 8 deletions(-)
diff --git a/kernel/kexec_core.c b
On Tue, Dec 14, 2021 at 11:09:23AM +0100, Vlastimil Babka wrote:
> On 12/14/21 06:32, Baoquan He wrote:
> > On 12/13/21 at 01:43pm, Hyeonggon Yoo wrote:
> >> Hello Baoquan. I have a question on your code.
> >>
> >> On Mon, Dec 13, 2021 at 08:27:12PM +0800, Baoquan He wrote:
> >> > Dma-kmalloc will
On 12/14/21 at 07:24pm, Catalin Marinas wrote:
> On Tue, Dec 14, 2021 at 08:07:58PM +0100, Borislav Petkov wrote:
> > On Fri, Dec 10, 2021 at 02:55:25PM +0800, Zhen Lei wrote:
> > > From: Chen Zhou
> > >
> > > The lower bounds of crash kernel reservation and crash kernel low
> > > reservation are
On 2021/12/15 3:24, Catalin Marinas wrote:
> On Tue, Dec 14, 2021 at 08:07:58PM +0100, Borislav Petkov wrote:
>> On Fri, Dec 10, 2021 at 02:55:25PM +0800, Zhen Lei wrote:
>>> From: Chen Zhou
>>>
>>> The lower bounds of crash kernel reservation and crash kernel low
>>> reservation are different,
+ AKASHI Takahiro
+ Simon Horman
Thank you guys for any suggestions.
And vmcore-dmesg just can not work for 52-bits VA arm64 now.
Thanks,
Pingfan
On Fri, Dec 10, 2021 at 11:07 AM Pingfan Liu wrote:
>
> Currently phys_to_virt() does not work well on 52-bits VA arm64 kernel.
> One issue is contri
Hi Ivan,
sorry for the delay.
-Original Message-
> These patchset suggests feature to add user specific information along
> with dumpfile. One of usecases could be a platform build information
> containing dubug file addresses, sources of daily build, some
> platform related information a
On Tue, Dec 14, 2021 at 08:07:58PM +0100, Borislav Petkov wrote:
> On Fri, Dec 10, 2021 at 02:55:25PM +0800, Zhen Lei wrote:
> > From: Chen Zhou
> >
> > The lower bounds of crash kernel reservation and crash kernel low
> > reservation are different, use the consistent value CRASH_ALIGN.
>
> A bi
On Fri, Dec 10, 2021 at 02:55:25PM +0800, Zhen Lei wrote:
> From: Chen Zhou
>
> The lower bounds of crash kernel reservation and crash kernel low
> reservation are different, use the consistent value CRASH_ALIGN.
A big WHY is missing here to explain why the lower bound of the
allocation range ne
On 12/14/21 10:31 AM, Christoph Hellwig wrote:
On Mon, Dec 13, 2021 at 08:27:12PM +0800, Baoquan He wrote:
Dma-kmalloc will be created as long as CONFIG_ZONE_DMA is enabled.
However, it will fail if DMA zone has no managed pages. The failure
can be seen in kdump kernel of x86_64 as below:
Plea
Hi lizhe,
On Thu, 9 Dec 2021 19:20:03 -0800
lizhe wrote:
> No judgment required ck_cmdline is NULL
> its caller has alreadly judged, see __parse_crashkernel
> function
>
> Signed-off-by: lizhe
> ---
> kernel/crash_core.c | 3 ---
> 1 file changed, 3 deletions(-)
>
> diff --git a/kernel/cras
On Mon, Dec 13, 2021 at 08:27:12PM +0800, Baoquan He wrote:
> Dma-kmalloc will be created as long as CONFIG_ZONE_DMA is enabled.
> However, it will fail if DMA zone has no managed pages. The failure
> can be seen in kdump kernel of x86_64 as below:
Please just switch the sr allocation to use GFP_K
On Tue, Dec 14, 2021 at 05:56:57PM +0800, Baoquan He wrote:
> Ah, OK, I see the new paragraph from you added in below commit.
That is supposed to make it absolutely clear and explicit. There are
other hints as to what a subsequent SOB means in that document already.
Just the next section says:
"
On Tue, Dec 14, 2021 at 06:03:11PM +0800, Tiezhu Yang wrote:
> On 12/13/2021 10:43 PM, Matthew Wilcox wrote:
> > On Mon, Dec 13, 2021 at 08:30:33AM +, David Laight wrote:
> > > From: Matthew Wilcox
> > > > Sent: 12 December 2021 11:48
> > > >
> > > > On Sat, Dec 11, 2021 at 05:53:46PM +, D
On 2021/12/14 18:45, Baoquan He wrote:
>> +/* User specifies base address explicitly. */
> If you plan to repost, please take above sentence off either. Then we
> can say this patch is only doing code moving.
>
>> +unsigned long long start;
>> +
> OK, I can see that this
On 2021/12/10 14:55, Zhen Lei wrote:
> From: Chen Zhou
>
> We will make the functions reserve_crashkernel() as generic, the
> xen_pv_domain() check in reserve_crashkernel() is relevant only to
> x86, the same as insert_resource() in reserve_crashkernel[_low]().
> So move xen_pv_domain() check
On 12/10/21 at 02:55pm, Zhen Lei wrote:
> From: Chen Zhou
>
> Make the functions reserve_crashkernel[_low]() as generic. Since
> reserve_crashkernel[_low]() implementations are quite similar on other
> architectures as well, we can have more users of this later.
>
> So have CONFIG_ARCH_WANT_RESE
On Tue, 14 Dec 2021, Vlastimil Babka wrote:
> If doesn't feel right to me to fix (or rather workaround) this on the level
> of kmalloc caches just because the current reports come from there. If we
> decide it's acceptable for kdump kernel to return !ZONE_DMA memory for
> GFP_DMA requests, then it
On 12/14/21 06:32, Baoquan He wrote:
> On 12/13/21 at 01:43pm, Hyeonggon Yoo wrote:
>> Hello Baoquan. I have a question on your code.
>>
>> On Mon, Dec 13, 2021 at 08:27:12PM +0800, Baoquan He wrote:
>> > Dma-kmalloc will be created as long as CONFIG_ZONE_DMA is enabled.
>> > However, it will fail
On 12/13/2021 10:43 PM, Matthew Wilcox wrote:
On Mon, Dec 13, 2021 at 08:30:33AM +, David Laight wrote:
From: Matthew Wilcox
Sent: 12 December 2021 11:48
On Sat, Dec 11, 2021 at 05:53:46PM +, David Laight wrote:
From: Tiezhu Yang
Sent: 11 December 2021 03:33
v2:
-- add copy_to_use
On 12/14/21 at 10:38am, Borislav Petkov wrote:
> On Tue, Dec 14, 2021 at 04:54:40PM +0800, Baoquan He wrote:
> > If you didn't contribute change, Signed-off-by should be taken off.
>
> The second SOB is correct here. I'll let you figure it out what it
> means.
>
> Hint: Documentation/process/subm
On Tue, Dec 14, 2021 at 04:54:40PM +0800, Baoquan He wrote:
> If you didn't contribute change, Signed-off-by should be taken off.
The second SOB is correct here. I'll let you figure it out what it
means.
Hint: Documentation/process/submitting-patches.rst
--
Regards/Gruss,
Boris.
https://pe
On 2021/12/14 3:54, Borislav Petkov wrote:
>> Subject: Re: [PATCH v17 01/10] x86: kdump: replace the hard-coded alignment
>> with macro CRASH_ALIGN
>
>>From Documentation/process/maintainer-tip.rst:
>
> "Patch subject
> ^
>
> The tip tree preferred format for patch subject prefi
On 12/10/21 at 02:55pm, Zhen Lei wrote:
> From: Chen Zhou
>
> To make the functions reserve_crashkernel() as generic,
> replace some hard-coded numbers with macro CRASH_ADDR_LOW_MAX.
>
> Signed-off-by: Chen Zhou
> Signed-off-by: Zhen Lei
If you made change to this patch, please remove the old
On 2021/12/13 21:37, Baoquan He wrote:
> On 12/10/21 at 02:55pm, Zhen Lei wrote:
>> From: Chen Zhou
>>
>> The lower bounds of crash kernel reservation and crash kernel low
>> reservation are different, use the consistent value CRASH_ALIGN.
>>
>> Suggested-by: Dave Young
>> Signed-off-by: Chen
On 2021/12/13 21:17, Baoquan He wrote:
> On 12/10/21 at 02:55pm, Zhen Lei wrote:
>> From: Chen Zhou
>>
>> Move CRASH_ALIGN to header asm/kexec.h for later use.
>>
>> Suggested-by: Dave Young
>> Suggested-by: Baoquan He
>
> I remember Dave and I discussed and suggested this when reviewing.
>
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