tree a7be9bdc58543d449bb11c39d79509bd7d259678
parent f8203b59c7b20154ff08e90fca438f8939fca4bf
author Paolo Bonzini <pbonzini@redhat.com> 1593083692 -0400
committer Paolo Bonzini <pbonzini@redhat.com> 1593087646 -0400

x86: fix stack pointer after call

Since setup_multiboot has a C calling convention, the stack pointer must
be adjusted after the call.  Without this change, the bottom of the
percpu area would be 4 bytes below the bottom of the stack and overlap
the top 4 bytes of CPU 1's stack.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>