x86/entry: Arrange for %r14 to be STACK_END across SPEC_CTRL_ENTRY_FROM_PV
Other SPEC_CTRL_* paths already use %r14 like this, and it will allow for
simplifications.
All instances of SPEC_CTRL_ENTRY_FROM_PV are followed by a GET_STACK_END()
invocation, so this change is only really logic and register shuffling.
No functional change.
Signed-off-by: Andrew Cooper <andrew.cooper3@citrix.com>
Reviewed-by: Jan Beulich <jbeulich@suse.com>
(cherry picked from commit
22390697bf1b4cd3024f2d10893dec3c3ec08a9c)
projects / xen.git / commit