Re: [PATCH v10 0/5] support reserving crashkernel above 4G on arm64 kdump

2020-07-03 Thread Bhupesh Sharma
Hi Chen, On Fri, Jul 3, 2020 at 9:24 AM Chen Zhou wrote: > > This patch series enable reserving crashkernel above 4G in arm64. > > There are following issues in arm64 kdump: > 1. We use crashkernel=X to reserve crashkernel below 4G, which will fail > when there is no enough low memory. > 2. Curre

Re: [PATCH 2/2] arm64: Allocate crashkernel always in ZONE_DMA

2020-07-03 Thread Bhupesh Sharma
Hi Chen, On Fri, Jul 3, 2020 at 10:54 AM chenzhou wrote: > > Hi Bhupesh, > > > On 2020/7/3 3:22, Bhupesh Sharma wrote: > > Hi Will, > > > > On Thu, Jul 2, 2020 at 1:20 PM Will Deacon wrote: > >> On Thu, Jul 02, 2020 at 03:44:20AM +0530, Bhupesh Sharma wrote: > >>> commit bff3b04460a8 ("arm64: mm

Re: [PATCH v10 0/5] support reserving crashkernel above 4G on arm64 kdump

2020-07-03 Thread chenzhou
Hi Bhupesh, On 2020/7/3 15:26, Bhupesh Sharma wrote: > Hi Chen, > > On Fri, Jul 3, 2020 at 9:24 AM Chen Zhou wrote: >> This patch series enable reserving crashkernel above 4G in arm64. >> >> There are following issues in arm64 kdump: >> 1. We use crashkernel=X to reserve crashkernel below 4G, wh

Re: [PATCH v10 5/5] kdump: update Documentation about crashkernel on arm64

2020-07-03 Thread Dave Young
On 07/03/20 at 12:50pm, Dave Young wrote: > On 07/03/20 at 12:46pm, Dave Young wrote: > > Hi, > > > > Thanks for the update, but still some nitpicks :( > > > > I'm sorry I did not catch them previously, but maybe it is not worth to > > repost the whole series if no other changes needed. > > Fee

Re: [PATCH v3 3/3] printk: use the lockless ringbuffer

2020-07-03 Thread John Ogness
On 2020-07-02, lijiang wrote: > About the VMCOREINFO part, I made some tests based on the kernel patch > v3, the makedumpfile and crash-utility can work as expected with your > patch(userspace patch), but, unfortunately, the > vmcore-dmesg(kexec-tools) can't correctly read the printk ring buffer >

Re: [PATCH] arm64/defconfig: Enable CONFIG_KEXEC_FILE

2020-07-03 Thread Catalin Marinas
On Fri, Jul 03, 2020 at 12:55:03AM +0530, Bhupesh Sharma wrote: > On Fri, May 15, 2020 at 2:44 PM Bhupesh Sharma wrote: > > On Thu, Apr 30, 2020 at 10:05 AM Bhupesh Sharma wrote: > > > On Tue, Apr 28, 2020 at 3:37 PM Catalin Marinas > > > wrote: > > > > > > > > On Tue, Apr 28, 2020 at 01:55:58P

Re: [PATCH v3 3/3] printk: use the lockless ringbuffer

2020-07-03 Thread lijiang
在 2020年07月02日 21:31, Petr Mladek 写道: > On Thu 2020-07-02 17:43:22, lijiang wrote: >> 在 2020年07月02日 17:02, John Ogness 写道: >>> On 2020-07-02, lijiang wrote: About the VMCOREINFO part, I made some tests based on the kernel patch v3, the makedumpfile and crash-utility can work as expected w