acrn-hypervisor/misc/efi-stub/clearlinux
Zide Chen 1bc5c7ac5b hv/acrn-config/efi-stuf: assign hvlog and ramoops buffer address < 256MB
If HV relocation is enabled, either ACRN efi-stub or GRUB relocates
hypervisor image above HPA 256MB, thus we put hvlog and ramoops buffer
under 256MB to avoid conflict with hypervisor owned address.

This patch hardcodes these addresses:

0xa00000 - 0xdfffff: 4MiB for ramoops buffer
0xe00000 - 0xffffff: 2MiB for hvlog buffer

However, user can customize them to other addresses as long as it's under
256MB, available in host e820, and SOS bootarg "nokaslr" is not specified.

If HV relocation is disabled, need to make sure that these buffer
addresses are not between HV_RAM_START and HV_RAM_START + HV_RAM_SIZE.

Tracked-On: #4760
Signed-off-by: Zide Chen <zide.chen@intel.com>
Reviewed-by: Jason Chen CJ <jason.cj.chen@intel.com>
2020-05-13 08:36:54 +08:00
..
acrn.conf hv/acrn-config/efi-stuf: assign hvlog and ramoops buffer address < 256MB 2020-05-13 08:36:54 +08:00