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



On 12/15/2014 01:05 PM, David Vrabel wrote:
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

Really? In the link below I see:

The types supported are:

STT_FUNC
function
    Mark the symbol as being a function name.
...

So "function" seems to be okay.


+
        .balign PAGE_SIZE

You can remove this .balign.

Indeed.


Juergen


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