[patch 0/3 v2] kexec-tools: efi runtime support
dyoung at redhat.com
dyoung at redhat.com
Tue Nov 5 03:29:47 EST 2013
This patchset is for adding efi runtime support on kexec kernel
kernel patches see below thread:
http://thread.gmane.org/gmane.linux.kernel.efi/2491
in kexec-tools, this patchset will do below:
1. retrieve efi_info from debugfs boot_params, and fill the
x86 setup header
2. collect data efi runtime needed:
/sys/firmware/efi/systab: fw_vendor, runtime, config_tables and smbios
/sys/firmware/efi/efi-runtime-map/*, the phys-virt mappings in 1st kernel
3. assemble setup_data based on data get in 2) then pass it to 2nd kernel
Tested on OVMF, dell laptop, lenovo laptop and HP workstation
Please help to review
V2 changelog:
Address comments from
Simon:
coding style, fixed a mem leak
HPA:
use type uint64_t instead of __uint64_t
mjg:
do not cause regression for loading old kernel
use xloadflags to check the bzImage support for efi.
in case old kernel, do not pass efi_info and setup_data
for new kernel, do not pass acpi_rsdp
Vivek:
suggest to export a value in bzImage probe for efi support
so it can be used to check if we should pass acpi_rsdp.
--
Thanks
dave
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