Re: [PATCH 01/11] kexec_file: allow archs to handle special regions while locating memory hole

2020-06-29 Thread Hari Bathini
Hi Petr, On 29/06/20 5:09 pm, Petr Tesarik wrote: > Hi Hari, > > is there any good reason to add two more functions with a very similar > name to an existing function? AFAICS all you need is a way to call a > PPC64-specific function from within kexec_add_buffer (PATCH 4/11), so > you could add so

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

2020-06-29 Thread Petr Mladek
On Fri 2020-06-26 17:02:48, John Ogness wrote: > On 2020-06-25, Petr Mladek wrote: > >> --- a/kernel/printk/printk.c > >> +++ b/kernel/printk/printk.c > >> + free = __LOG_BUF_LEN; > >> + prb_for_each_record(0, &printk_rb_static, seq, &r) > >> + free -= add_to_rb(&printk_rb_dynamic, &r);

Re: [PATCH 01/11] kexec_file: allow archs to handle special regions while locating memory hole

2020-06-29 Thread Petr Tesarik
Hi Hari, is there any good reason to add two more functions with a very similar name to an existing function? AFAICS all you need is a way to call a PPC64-specific function from within kexec_add_buffer (PATCH 4/11), so you could add something like this: int __weak arch_kexec_locate_mem_hole(struc

Re: [PATCH 07/11] ppc64/kexec_file: add support to relocate purgatory

2020-06-29 Thread kernel test robot
Hi Hari, Thank you for the patch! Yet something to improve: [auto build test ERROR on powerpc/next] [also build test ERROR on linux/master linus/master v5.8-rc2 next-20200626] [If your patch is applied to the wrong git tree, kindly drop us a note. And when submitting patch, we suggest to use as

Re: [PATCH 04/11] ppc64/kexec_file: avoid stomping memory used by special regions

2020-06-29 Thread kernel test robot
Hi Hari, Thank you for the patch! Perhaps something to improve: [auto build test WARNING on powerpc/next] [also build test WARNING on linux/master linus/master v5.8-rc2 next-20200626] [If your patch is applied to the wrong git tree, kindly drop us a note. And when submitting patch, we suggest to

Re: [PATCH 09/11] ppc64/kexec_file: setup backup region for kdump kernel

2020-06-29 Thread kernel test robot
Hi Hari, Thank you for the patch! Perhaps something to improve: [auto build test WARNING on powerpc/next] [also build test WARNING on linux/master linus/master v5.8-rc2 next-20200626] [If your patch is applied to the wrong git tree, kindly drop us a note. And when submitting patch, we suggest to

Re: [PATCH v9 0/5] support reserving crashkernel above 4G on arm64 kdump

2020-06-29 Thread John Donnelly
Hi , > On Jun 28, 2020, at 3:34 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. Curren

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Re: syslog size unread: was: [PATCH v3 3/3] printk: use the lockless ringbuffer

2020-06-29 Thread John Ogness
On 2020-06-25, Petr Mladek wrote: > On Thu 2020-06-18 16:55:19, John Ogness wrote: >> --- a/kernel/printk/printk.c >> +++ b/kernel/printk/printk.c >> @@ -1609,11 +1633,15 @@ int do_syslog(int type, char __user *buf, int len, >> int source) >> break; >> /* Number of chars in the

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

2020-06-29 Thread John Ogness
On 2020-06-29, Petr Mladek wrote: >> @@ @@ void __init setup_log_buf(int early) >> +prb_init(&printk_rb_dynamic, >> + new_log_buf, order_base_2(new_log_buf_len), >> + new_dict_buf, order_base_2(new_log_buf_len), >> + new_descs, order_base_2(new_descs_count))

Re: [PATCH 04/11] ppc64/kexec_file: avoid stomping memory used by special regions

2020-06-29 Thread piliu
On 06/29/2020 01:55 PM, Hari Bathini wrote: > > > On 28/06/20 7:44 am, piliu wrote: >> Hi Hari, > > Hi Pingfan, > >> >> After a quick through for this series, I have a few question/comment on >> this patch for the time being. Pls see comment inline. >> >> On 06/27/2020 03:05 AM, Hari Bathini

Re: [PATCH 04/11] ppc64/kexec_file: avoid stomping memory used by special regions

2020-06-29 Thread Hari Bathini
On 30/06/20 9:00 am, piliu wrote: > > > On 06/29/2020 01:55 PM, Hari Bathini wrote: >> >> >> On 28/06/20 7:44 am, piliu wrote: >>> Hi Hari, >> >> Hi Pingfan, >> >>> >>> After a quick through for this series, I have a few question/comment on >>> this patch for the time being. Pls see comment in