在 2019年10月25日 11:39, Eric W. Biederman 写道:
> lijiang writes:
>
>> * Returns the length of the argument (regardless of if it was
>> * truncated to fit in the buffer), or -1 on not found.
>> */
>> static int
>> __cmdline_find_option(const char *cmdline, int max_cmdline_size,
>>
...@kernel.org; kexec@lists.infradead.org;
> dhowe...@redhat.com; mi...@redhat.com; b...@alien8.de; ebied...@xmission.com;
> h...@zytor.com; t...@linutronix.de; dyo...@redhat.com; vgo...@redhat.com
> Subject: Re: [PATCH 1/2 v5] x86/kdump: always reserve the low 1MiB when the
> crashkernel option is s
lijiang writes:
> * Returns the length of the argument (regardless of if it was
> * truncated to fit in the buffer), or -1 on not found.
> */
> static int
> __cmdline_find_option(const char *cmdline, int max_cmdline_size,
> const char *option, char *buffer, int bufsize)
>
; jgr...@suse.com; thomas.lenda...@amd.com;
>> b...@redhat.com; x...@kernel.org; kexec@lists.infradead.org;
>> dhowe...@redhat.com; mi...@redhat.com; b...@alien8.de; ebied...@xmission.com;
>> h...@zytor.com; t...@linutronix.de; dyo...@redhat.com; vgo...@redhat.com
>> Subje
在 2019年10月24日 19:33, lijiang 写道:
> 在 2019年10月24日 18:07, Simon Horman 写道:
>> Hi Linbo,
>>
>> thanks for your patch.
>>
>> On Wed, Oct 23, 2019 at 10:19:11PM +0800, Lianbo Jiang wrote:
>>> Kdump kernel will reuse the first 640k region because the real mode
>>> trampoline has to work in this area. Whe
在 2019年10月24日 18:07, Simon Horman 写道:
> Hi Linbo,
>
> thanks for your patch.
>
> On Wed, Oct 23, 2019 at 10:19:11PM +0800, Lianbo Jiang wrote:
>> Kdump kernel will reuse the first 640k region because the real mode
>> trampoline has to work in this area. When the vmcore is dumped, the
>> old memor
Hi Linbo,
thanks for your patch.
On Wed, Oct 23, 2019 at 10:19:11PM +0800, Lianbo Jiang wrote:
> Kdump kernel will reuse the first 640k region because the real mode
> trampoline has to work in this area. When the vmcore is dumped, the
> old memory in this area may be accessed, therefore, kernel h
Kdump kernel will reuse the first 640k region because the real mode
trampoline has to work in this area. When the vmcore is dumped, the
old memory in this area may be accessed, therefore, kernel has to
copy the contents of the first 640k area to a backup region so that
kdump kernel can read the old
