Re: [Xen-devel] [PATCH 4/4] xen: use generated hypercall symbols in arch/x86/xen/xen-head.S

David Vrabel
2014-12-15T12:06:08Z

On 11/12/14 18:04, Juergen Gross wrote:
> Instead of manually list each hypercall in arch/x86/xen/xen-head.S
> use the auto generated symbol list.
>
> This also corrects the wrong address of xen_hypercall_mca which was
> located 32 bytes higher than it should.
>
> Symbol addresses have been verified to match the correct ones via
> objdump output.
[...]
> +
> +#define HYPERCALL(n) \
> + .equ xen_hypercall_##n, hypercall_page + __HYPERVISOR_##n * 32; \
> + .type xen_hypercall_##n, function; .size xen_hypercall_##n, 32
> +#include <asm/xen-hypercalls.h>
> +#undef HYPERCALL

The gas manual[1] suggests the syntax you've used for .type is invalid
and suggest using .type <name>, STT_FUNC

> +
> .balign PAGE_SIZE

You can remove this .balign.

David

[1] https://sourceware.org/binutils/docs/as/Type.html#Type