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Re: [Xen-devel] [PATCH] x86/sysctl: Hide hvm_directio if hvm is not available

To: "Andrew Cooper" <andrew.cooper3@xxxxxxxxxx>
From: "Jan Beulich" <JBeulich@xxxxxxxx>
Date: Fri, 27 Nov 2015 01:31:57 -0700
Cc: Xen-devel <xen-devel@xxxxxxxxxxxxx>
Delivery-date: Fri, 27 Nov 2015 08:32:10 +0000
List-id: Xen developer discussion <xen-devel.lists.xen.org>

>>> On 26.11.15 at 18:02, <andrew.cooper3@xxxxxxxxxx> wrote:
> If HVM support unavailable, advertising hvm_directio is misleading.

Well, perhaps XEN_SYSCTL_PHYSCAP_hvm_directio is the wrong
name for the flag? How would the tool stack know the IOMMU is
available for PV pass-through with that flag hidden?

Jan

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References:
- [Xen-devel] [PATCH] x86/sysctl: Hide hvm_directio if hvm is not available
  - From: Andrew Cooper

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