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https://github.com/AsahiLinux/u-boot
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0001a964b8
This commit fixes issue with usage of Xen hypervisor shared info page. Previously U-boot did not unmap it at the end of OS boot process. Xen did not prevent guest from this. So, it worked, but caused wierd issues - one memory page, that was returned by memalign in U-boot for Enlighten mapping was not unmaped by Xen (shared_info values was not removed from there) and returned to allocator. During the Linux boot, it uses shared_info page as regular RAM page, which leads to hypervisor shared info corruption. So, to fix this issue, as discussed on the xen-devel mailing list, the code should: 1) Unmap the page 2) Populate the area with memory using XENMEM_populate_physmap This patch adds page unmapping via XENMEM_remove_from_physmap, fills hole in address space where page was mapped via XENMEM_populate_physmap and return this address to memory allocator for freeing. Signed-off-by: Dmytro Firsov <dmytro_firsov@epam.com> Reviewed-by: Anastasiia Lukianenko <vicooodin@gmail.com> |
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| .. | ||
| events.c | ||
| gnttab.c | ||
| hypervisor.c | ||
| Kconfig | ||
| Makefile | ||
| pvblock.c | ||
| xenbus.c | ||