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Re: [Xen-devel] [PATCH] x86: drop dead asm-offsets definitions
- To: Jan Beulich <JBeulich@xxxxxxxx>, xen-devel <xen-devel@xxxxxxxxxxxxxxxxxxxx>
- From: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
- Date: Fri, 6 Jul 2018 10:42:10 +0100
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- Cc: Julien Grall <julien.grall@xxxxxxx>, Stefano Stabellini <sstabellini@xxxxxxxxxx>
- Delivery-date: Fri, 06 Jul 2018 09:42:23 +0000
- List-id: Xen developer discussion <xen-devel.lists.xenproject.org>
- Openpgp: preference=signencrypt
On 06/07/18 08:39, Jan Beulich wrote:
> UREGS_user_sizeof had a use long, long ago on x86, and apparently was
> blindly cloned into ARM code.
>
> The uses of UREGS_saved_upcall_mask and UREGS_{ds,es,fs,gs} disappeared
> in 71eb3a65e3 ("VMX: streamline entry.S code") and 110b2d6e8a ("SVM:
> streamline entry.S code").
>
> There are other ARM side UREGS_* which look to be unused, but I'd prefer
> to leave deciding on their disposition to ARM folks.
>
> irq_caps_offset and next_in_list_offset were introduced in 57b0566668
> ("Re-enable MSI support") without any user.
>
> VCPU_failsafe_{addr,sel} and _VGCF_failsafe_disables_events uses went
> away in d9b7ef209a ("x86: drop failsafe callback invocation from
> assembly").
>
> CPUINFO_processor_id looks to have been introduced without user by
> 917335d8b3 ("x86: Avoid assumptions about C struct layouts from asm
> code").
>
> Signed-off-by: Jan Beulich <jbeulich@xxxxxxxx>
Acked-by: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
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