Messages in this thread | | | From | Wesley Zhao <> | Subject | [PATCH v2 0/2] Make it possible to reserve memory on 64bit platform | Date | Sat, 16 Jan 2021 02:41:11 -0800 |
| |
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
| |