From: Wesley Zhao <zhaowei1102@thundersoft.com>
To: akpm@linux-foundation.org
Cc: andriy.shevchenko@linux.intel.com, keescook@chromium.org,
tglx@linutronix.de, kerneldev@karsmulder.nl,
nivedita@alum.mit.edu, joe@perches.com, gpiccoli@canonical.com,
aquini@redhat.com, gustavoars@kernel.org,
zhaowei1102@thundersoft.com, ojeda@kernel.org,
ndesaulniers@gooogle.com, linux-kernel@vger.kernel.org,
david@redhat.com, dan.j.williams@intel.com, guohanjun@huawei.com,
mchehab+huawei@kernel.org
Subject: [PATCH v2 0/2] Make it possible to reserve memory on 64bit platform
Date: Sat, 16 Jan 2021 02:41:11 -0800 [thread overview]
Message-ID: <1610793673-64008-1-git-send-email-zhaowei1102@thundersoft.com> (raw)
I was trying to reserve some memory to save logs incase that Android panic or hang and then
I can read the logs from QNX side from the memory reserved before on the Qualcomm 8155 hypervisor platform,
and I find the "reserve=" parameter only support 32bit,so I made some change and send these patches.
testcase:
I test on the qemu with some cmdline like[qemu-system-x86_64 -kernel linux-next/arch/x86_64/boot/bzImage
-hda ubuntu-system.ext4 -append "root=/dev/sda init=/bin/bash console=ttyS0 reserve=0x180000000,0x123456"
-nographic] and check the /proc/iomem with 180000000-180123455 : reserved.
And some other tests with the get_option with the parameter(-12345678) and so on
Wesley Zhao (2):
lib/cmdline: add new function get_option_ull()
resource: Make it possible to reserve memory on 64bit platform
include/linux/kernel.h | 2 ++
kernel/resource.c | 6 ++--
lib/cmdline.c | 94 ++++++++++++++++++++++++++++++++++++++++++--------
3 files changed, 85 insertions(+), 17 deletions(-)
--
2.7.4
next reply other threads:[~2021-01-16 10:44 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-01-16 10:41 Wesley Zhao [this message]
2021-01-16 10:41 ` [PATCH v2 1/2] lib/cmdline: add new function get_option_ull() Wesley Zhao
2021-01-17 19:02 ` [PATCH v2 0/2] Make it possible to reserve memory on 64bit platform Dan Williams
[not found] ` <202101181151049299923@thundersoft.com>
2021-01-18 9:50 ` David Hildenbrand
[not found] ` <202101221536190259795@thundersoft.com>
2021-01-22 10:21 ` Andy Shevchenko
2021-01-18 10:42 ` Andy Shevchenko
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