On Tue, 2024-08-20 at 14:14 +0300, kirill.shutemov@xxxxxxxxxxxxxxx wrote: > 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. > Reviewed-by: Kai Huang <kai.huang@xxxxxxxxx>
