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.
I run the cmdline_kunit.c and got these:
[ 1.663048] 1..1
[ 1.663107] # Subtest: cmdline
[ 1.663145] 1..3
[ 1.663795] ok 1 - cmdline_test_noint
[ 1.664139] ok 2 - cmdline_test_lead_int
[ 1.664553] ok 3 - cmdline_test_tail_int
[ 1.664788] ok 1 - cmdline
Additionaly:
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
