From: Baoquan He <bhe@redhat.com>
To: linux-kernel@vger.kernel.org
Cc: prudo@linux.vnet.ibm.com, Baoquan He <bhe@redhat.com>,
kexec@lists.infradead.org, takahiro.akashi@linaro.org,
ebiederm@xmission.com, akpm@linux-foundation.org,
dyoung@redhat.com, vgoyal@redhat.com
Subject: [PATCH 0/2] Kexec_file: Load kernel at top of system ram
Date: Thu, 22 Mar 2018 11:37:20 +0800 [thread overview]
Message-ID: <20180322033722.9279-1-bhe@redhat.com> (raw)
The current kexec_file ignores kexec_buf.top_down value when call
arch_kexec_walk_mem() to allocate memory for loading kernel/initrd
stuffs. This is not supposed to be what kexec_buf.top_down is used
for.
In patch 0001, introduce a new function walk_system_ram_res_rev()
which is a variant of walk_system_ram_res(), walks through resources
of System RAM from top to down. And patch 0001 is picked from AKASHI's
patchset which adds arm64 kexec_file support. His next round of post
won't need walk_system_ram_res_rev any more, so I take it into this
patchset and use it in patch 0002.
In patch 0002, check kexec_buf.top_down in arch_kexec_walk_mem(),
if its value is 'true', call walk_system_ram_res_rev(). Otherwise
call walk_system_ram_res().
AKASHI Takahiro (1):
resource: add walk_system_ram_res_rev()
Baoquan He (1):
kexec_file: Load kernel at top of system RAM if required
include/linux/ioport.h | 3 +++
kernel/kexec_file.c | 2 ++
kernel/resource.c | 63 ++++++++++++++++++++++++++++++++++++++++++++++++++
3 files changed, 68 insertions(+)
--
2.13.6
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next reply other threads:[~2018-03-22 3:37 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-03-22 3:37 Baoquan He [this message]
2018-03-22 3:37 ` [PATCH 1/2] resource: add walk_system_ram_res_rev() Baoquan He
2018-03-22 22:29 ` Andrew Morton
2018-03-23 0:58 ` Baoquan He
2018-03-23 2:06 ` Andrew Morton
2018-03-23 3:10 ` Baoquan He
2018-03-23 20:06 ` Andrew Morton
2018-03-24 13:33 ` Baoquan He
2018-03-24 16:13 ` Wei Yang
2018-03-26 14:30 ` Baoquan He
2018-03-26 15:04 ` Wei Yang
2018-03-22 3:37 ` [PATCH 2/2] kexec_file: Load kernel at top of system RAM if required Baoquan He
2018-03-22 22:38 ` [PATCH 0/2] Kexec_file: Load kernel at top of system ram Andrew Morton
2018-03-23 8:38 ` Baoquan He
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