Re: [PATCH] xen: drop anti-dependency on X86_VISWS

2011-04-08 Thread Ian Campbell
(dropping netdev and the visws list) On Thu, 2011-04-07 at 11:07 -0700, Jeremy Fitzhardinge wrote: On 04/06/2011 11:58 PM, Ian Campbell wrote: On Wed, 2011-04-06 at 22:45 +0100, David Miller wrote: From: Ian Campbell ian.campb...@eu.citrix.com Date: Mon, 4 Apr 2011 10:55:55 +0100 You

Re: [PATCH] xen: drop anti-dependency on X86_VISWS

2011-04-08 Thread Ian Campbell
(dropping netdev and visws list) On Thu, 2011-04-07 at 18:00 +0100, H. Peter Anvin wrote: On 04/06/2011 11:58 PM, Ian Campbell wrote: I'm not sure why ELAN belongs in the EXTENDED_PLATFORM option space rather than in the CPU choice option, since its only impact seems to be on -march,

Re: [PATCH] xen: drop anti-dependency on X86_VISWS

2011-04-08 Thread Jeremy Fitzhardinge
On 04/07/2011 11:38 PM, Ian Campbell wrote: Not really. The TSC register is a requirement, but that's going to be present on any CPU which can boot Xen. We don't need any of the kernel's TSC machinery though. So why the Kconfig dependency then? In principal a kernel compiled for a non-TSC

[Xen-devel] Re: [PATCH] xen: drop anti-dependency on X86_VISWS

2011-04-08 Thread Jan Beulich
On 08.04.11 at 17:25, Jeremy Fitzhardinge jer...@goop.org wrote: On 04/07/2011 11:38 PM, Ian Campbell wrote: Is there any downside to this patch (is X86_CMPXCHG in the same sort of boat?) Only if we don't use cmpxchg in shared memory with other domains or the hypervisor. (I don't think it

Re: [Xen-devel] Re: [PATCH] xen: drop anti-dependency on X86_VISWS

2011-04-08 Thread Jeremy Fitzhardinge
On 04/08/2011 08:42 AM, Jan Beulich wrote: On 08.04.11 at 17:25, Jeremy Fitzhardinge jer...@goop.org wrote: On 04/07/2011 11:38 PM, Ian Campbell wrote: Is there any downside to this patch (is X86_CMPXCHG in the same sort of boat?) Only if we don't use cmpxchg in shared memory with other

Re: [PATCH] xen: drop anti-dependency on X86_VISWS

2011-04-08 Thread H. Peter Anvin
On 04/07/2011 11:46 PM, Ian Campbell wrote: Any reason not switch it over at this point then? Not really. -hpa ___ Virtualization mailing list Virtualization@lists.linux-foundation.org