在 2023/9/20 19:56, Simon Horman 写道:
On Fri, Sep 15, 2023 at 11:50:06AM +0800, Song Shuai wrote:
Hi,
This series is created to improve RISC-V port of kexec-tools,
and is based on the horms/kexec-tools:build-test-riscv-v2 branch.
In my mind the big question is how to move RISC-V support
from
The Makefile omits the iomem.h file, causing the archive file
generated by 'make dist' to lose iomem.h. This patch is used to
fix this problem.
Signed-off-by: Ming Wang
---
kexec/arch/loongarch/Makefile | 1 +
1 file changed, 1 insertion(+)
diff --git a/kexec/arch/loongarch/Makefile b/kexec/arc
Hi, Simon
On 10/10/23 21:01, Simon Horman wrote:
> On Mon, Oct 09, 2023 at 05:47:43PM +0800, Ming Wang wrote:
>> Hi, maintainers,
>>
>>
>> I get the kexec-tools 2.0.27 from
>> http://kernel.org/pub/linux/utils/kernel/kexec/kexec-tools-2.0.27.tar.gz,
>>
>> But I noticed that the kexec-tools-2.0.
On Tue, Oct 10, 2023 at 04:07:00PM +0530, Hari Bathini wrote:
>
>
> On 09/10/23 5:00 pm, Pingfan Liu wrote:
> > *** Idea ***
> > For kexec -p, the boot cpu can be not the cpu0, this causes the problem
> > of allocating memory for paca_ptrs[]. However, in theory, there is no
> > requirement to ass
On Tue, Oct 10, 2023 at 01:56:13PM +0530, Hari Bathini wrote:
>
>
> On 09/10/23 5:00 pm, Pingfan Liu wrote:
> > If the boot_cpuid is smaller than nr_cpus, it requires extra effort to
> > ensure the boot_cpu is in cpu_present_mask. This can be achieved by
> > reserving the last quota for the boot
Hi, Simon
Thank you for your reply.
On 10/10/23 21:01, Simon Horman wrote:
> On Mon, Oct 09, 2023 at 05:47:43PM +0800, Ming Wang wrote:
>> Hi, maintainers,
>>
>>
>> I get the kexec-tools 2.0.27 from
>> http://kernel.org/pub/linux/utils/kernel/kexec/kexec-tools-2.0.27.tar.gz,
>>
>> But I notice
On Tue, Oct 10, 2023 at 02:38:40PM +0530, Sourabh Jain wrote:
> Hello Pingfan,
>
> >
> > With this patch series applied, the kdump kernel fails to boot on
> > powerpc with nr_cpus=1.
> >
> > Console logs:
> > ---
> > [root]# echo c > /proc/sysrq-trigger
> > [ 74.783235] sysrq:
On 2023/10/10 23:12, Song Shuai wrote:
> Changes since V1:
> https://lore.kernel.org/kexec/20230927111822.180630-1-songshuaish...@tinylab.org/
>
> - fix a typo in Patch2's commit-msg
> - adjust some indentions of Patch1
Thank you, but already applied the v1 patches with fixes on my end:
https://g
Joel Fernandes writes:
> On Mon, Oct 9, 2023 at 11:30 AM Eric W. Biederman
> wrote:
>>
>> Joel Fernandes writes:
>>
>> > On Mon, Oct 2, 2023 at 2:18 PM Joel Fernandes
>> > wrote:
>> > [..]
>> >> > > Such freezing is already being done if kernel supports KEXEC_JUMP and
>> >> > > kexec_image->
On Mon, Oct 9, 2023 at 10:00 AM Steven Rostedt wrote:
>
> On Sat, 7 Oct 2023 21:30:42 -0400
> Joel Fernandes wrote:
>
> > Just checking how we want to proceed, is the consensus that we should
> > prevent kernel crashes without relying on userspace stopping all
> > processes? Should we fix regular
On Mon, Oct 9, 2023 at 11:30 AM Eric W. Biederman wrote:
>
> Joel Fernandes writes:
>
> > On Mon, Oct 2, 2023 at 2:18 PM Joel Fernandes
> > wrote:
> > [..]
> >> > > Such freezing is already being done if kernel supports KEXEC_JUMP and
> >> > > kexec_image->preserve_context is true. However, doi
To let info->max_mapnr indicate the direct max PFN and then
make the kdump header's max_mapnr_64 correct, riscv64 port
didn't define ARCH_PFN_OFFSET.
As for FLATMEM type, the pfn region of mem_map_data should
be adjusted to start from info->phys_base instead of zero.
Signed-off-by: Song Shuai
--
Changes since V1:
https://lore.kernel.org/kexec/20230927111822.180630-1-songshuaish...@tinylab.org/
- fix a typo in Patch2's commit-msg
- adjust some indentions of Patch1
These 2 patches add riscv64 support for makedumpfile:
Patch1 - Add riscv64 support
===
This patch
This patch adds support for riscv64 in makedumpfile.
It implements the "vtop" for kenrel memory regions
and supports Sv39/Sv48/Sv57 page modes for RV64.
Signed-off-by: Song Shuai
---
Makefile | 2 +-
arch/riscv64.c | 219 +
makedumpfile.c |
On 10/5/2023 6:13 AM, Kirill A. Shutemov wrote:
> kvm_guest_cpu_offline() tries to disable kvmclock regardless if it is
> present in the VM. It leads to write to a MSR that doesn't exist on some
> configurations, namely in TDX guest:
>
> unchecked MSR access error: WRMSR to 0x12 (tried to
On 10/5/2023 6:13 AM, Kirill A. Shutemov wrote:
> ACPI MADT doesn't allow to offline CPU after it got woke up.
>
I think you can use the term "CPU hotplug" instead of just offline.
> Currently hotplug prevented based on the confidential computing
> attribute which is set for Intel TDX. But TD
On 10/5/2023 6:13 AM, Kirill A. Shutemov wrote:
> The function cpu_hotplug_not_supported() can be called to indicate that
> CPU hotplug should be disabled. It does not prevent the initial bring up
> of the CPU, but it stops subsequent offlining.
>
> This function is intended to replace CC_ATTR_
On Mon, Oct 09, 2023 at 05:47:43PM +0800, Ming Wang wrote:
> Hi, maintainers,
>
>
> I get the kexec-tools 2.0.27 from
> http://kernel.org/pub/linux/utils/kernel/kexec/kexec-tools-2.0.27.tar.gz,
>
> But I noticed that the kexec-tools-2.0.27/kexec/arch/loongarch/iomem.h file
> was missing from
On 09/10/23 5:00 pm, Pingfan Liu wrote:
*** Idea ***
For kexec -p, the boot cpu can be not the cpu0, this causes the problem
of allocating memory for paca_ptrs[]. However, in theory, there is no
requirement to assign cpu's logical id as its present sequence in the
device tree. But there is som
> /* Physical address of the Multiprocessor Wakeup Structure mailbox */
> @@ -74,6 +75,9 @@ int __init acpi_parse_mp_wake(union acpi_subtable_headers
> *header,
>
> acpi_mp_wake_mailbox_paddr = mp_wake->base_address;
>
> + /* Disable CPU onlining/offlining */
> + cpu_hotplug_no
> +#ifdef CONFIG_DEBUG_FS
> +static int tdx_shared_memory_show(struct seq_file *m, void *p)
> +{
> + unsigned long addr, end;
> + unsigned long found = 0;
> +
> + addr = PAGE_OFFSET;
> + end = PAGE_OFFSET + get_max_mapped();
> +
> + while (addr < end) {
> + unsign
Hello Pingfan,
With this patch series applied, the kdump kernel fails to boot on
powerpc with nr_cpus=1.
Console logs:
---
[root]# echo c > /proc/sysrq-trigger
[ 74.783235] sysrq: Trigger a crash
[ 74.783244] Kernel panic - not syncing: sysrq triggered crash
[ 74.783252
On 09/10/23 5:00 pm, Pingfan Liu wrote:
If the boot_cpuid is smaller than nr_cpus, it requires extra effort to
ensure the boot_cpu is in cpu_present_mask. This can be achieved by
reserving the last quota for the boot cpu.
Note: the restriction on nr_cpus will be lifted with more effort in the
Hello Pingfan,
With this patch series applied, the kdump kernel fails to boot on
powerpc with nr_cpus=1.
Console logs:
---
[root]# echo c > /proc/sysrq-trigger
[ 74.783235] sysrq: Trigger a crash
[ 74.783244] Kernel panic - not syncing: sysrq triggered crash
[ 74.783252
On 2023/10/07 11:27, Song Shuai wrote:
>
>
> 在 2023/10/3 12:22, HAGIO KAZUHITO(萩尾 一仁) 写道:
>> Hi,
>>
>> thank you for the patch.
>>
>> On 2023/09/27 20:18, Song Shuai wrote:
>>> These 2 patches add riscv64 support for makedumpfile:
>>>
>>> Patch1 - Add riscv64 support
>>> =
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