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Re: [Xen-devel] [PATCH v3 2/7] xen/nospec: Use always_inline to fix code gen for evaluate_nospec
- To: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>, Jan Beulich <jbeulich@xxxxxxxx>
- From: Norbert Manthey <nmanthey@xxxxxxxxx>
- Date: Tue, 29 Oct 2019 15:33:54 +0100
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- Cc: Juergen Gross <jgross@xxxxxxxx>, Stefano Stabellini <sstabellini@xxxxxxxxxx>, Julien Grall <julien@xxxxxxx>, Wei Liu <wl@xxxxxxx>, Konrad Rzeszutek Wilk <konrad.wilk@xxxxxxxxxx>, George Dunlap <George.Dunlap@xxxxxxxxxxxxx>, Ian Jackson <ian.jackson@xxxxxxxxxx>, Xen-devel <xen-devel@xxxxxxxxxxxxxxxxxxxx>
- Delivery-date: Tue, 29 Oct 2019 14:34:20 +0000
- Ironport-sdr: 3/KdpPeST2JGNJzrAkzXDw2QG1UIhbY8RziUkkG7CgegsUfEMzw1VT8UDYjJHPIA782ci0l9eW evqazgRzl0iw==
- List-id: Xen developer discussion <xen-devel.lists.xenproject.org>
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On 10/29/19 15:16, Andrew Cooper wrote:
> On 29/10/2019 14:03, Jan Beulich wrote:
>> On 29.10.2019 14:46, Andrew Cooper wrote:
>>> If this patch series does not agreement, I will unblock livepatching on
>>> 4.13 by committing the v2 patch which causes BRANCH_HARDEN to depend on
>>> BROKEN and force it to be compiled out with no user choice at all.
>>>
>>> Unbreaking livepatching is strictly more important than keeping a brand
>>> new feature in 4.13 in a broken form. I've provided two alternative
>>> strategies to fix the 4.13 blockers, but if noone can agree on which
>>> approach to use, I will commit the simpler fix.
>> As to unblocking live patching - may I ask you look at the symbol
>> disambiguation patch I did submit? The thread here, as suggested
>> before, should now be solely about code generation.
> Right, but the current state of l1tf-barrier is also a 4.13 blocker too
> - it is not in a shippable state.
>
> It either wants compiling out totally (the v2 patch), or having the code
> generation fixing (this v3 series), or some concrete 3rd suggestion.
I vote for having the code generation fixed, i.e. v3 of this series.
Best,
Norbert
Amazon Development Center Germany GmbH
Krausenstr. 38
10117 Berlin
Geschaeftsfuehrung: Christian Schlaeger, Ralf Herbrich
Eingetragen am Amtsgericht Charlottenburg unter HRB 149173 B
Sitz: Berlin
Ust-ID: DE 289 237 879
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