Josh Poimboeuf f4b4bc10b0 x86/xen: Support objtool vmlinux.o validation in xen-head.S
The Xen hypercall page is filled with zeros, causing objtool to fall
through all the empty hypercall functions until it reaches a real
function, resulting in a stack state mismatch.

The build-time contents of the hypercall page don't matter because the
page gets rewritten by the hypervisor.  Make it more palatable to
objtool by making each hypervisor function a true empty function, with
nops and a return.

Cc: Juergen Gross <jgross@suse.com>
Reviewed-by: Boris Ostrovsky <boris.ostrovsky@oracle.com>
Signed-off-by: Josh Poimboeuf <jpoimboe@redhat.com>
Link: https://lore.kernel.org/r/0883bde1d7a1fb3b6a4c952bc0200e873752f609.1611263462.git.jpoimboe@redhat.com
2021-01-26 11:33:02 -06:00
..
2020-10-28 20:26:25 +01:00
2020-10-14 10:34:45 -07:00
2018-09-03 16:50:35 +02:00
2020-10-14 10:34:45 -07:00
2020-08-14 13:34:37 -07:00