On Tue, Aug 20, 2024 at 11:06:34AM +0000, Huang, Kai wrote: > At later time: > > call swap_pages > movq $virtual_mapped, %rax <---- (1) > pushq %rax > ANNOTATE_UNRET_SAFE > ret <---- (2) > > (1) will load the VA which has __START_KERNEL_map to %rax, and after (2) the > kernel will run at VA of the original relocate_kernel() which maps to the PA > of the original relcoate_kernel(). But I think the memory page of the > original relocate_kernel() won't get corrupted after returning from the second > kernel, so should be safe to use? Yes. -- Kiryl Shutsemau / Kirill A. Shutemov
