e2b48e4328
Employ the fancy new EX_TYPE_IMM_REG to store -EFAULT in the return register and use this to remove some Xen .fixup usage. All callers of these functions only test for 0 return, so the actual return value change from -1 to -EFAULT is immaterial. Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Reviewed-by: Juergen Gross <jgross@suse.com> Reviewed-by: Josh Poimboeuf <jpoimboe@redhat.com> Link: https://lore.kernel.org/r/20211110101325.545019822@infradead.org