On 2016-06-28 20:00, Valentine Sinitsyn wrote:
> Hi all,
> 
> When interrupt remapping support was introduced first in Jailhouse for
> VT-d, we gained union x86_msi_vector.remap and related struct in union
> ioapic_redir_entry. Both are in vendor-neutral x86 code.
> 
> Do I get correctly that in fact the layout of this structure is VT-d
> specific? On AMD, interrupt remapping tables are indexed with 10 lowest
> bits of MSI data (Sect 2.2.5.1 in the spec), and we don't seem to touch
> this part in Jailhouse. You may find relevant code in the Linux kernel
> at [1]
> 
> Is it true, or am I missing something?

True, x86_msi_vector.remap is only relevant in the context of VT-d. Feel
tree to rename it to vtd_remap or intel_remap and add an amd_remap
variant (if needed).

Jan

-- 
Siemens AG, Corporate Technology, CT RDA ITP SES-DE
Corporate Competence Center Embedded Linux

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