linux-kernel - Re: xfs: Xen/HPT related regression in v6.6

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Message-ID: <df10f269-0494-46d9-be8f-7e5dc9cd3745@citrix.com>
Date: Tue, 5 Nov 2024 08:55:17 +0000
From: Andrew Cooper <andrew.cooper3@...rix.com>
To: arkamar@...as.cz
Cc: david@...hat.com, gregkh@...uxfoundation.org,
 linux-kernel@...r.kernel.org, linux-xfs@...r.kernel.org, willy@...radead.org
Subject: Re: xfs: Xen/HPT related regression in v6.6

>> At least years ago, this feature was not available in XEN PV guests [1]. 
> Yes, as I understand it, the hugepages are not available in my Xen
> guest.

Xen PV guests are strictly 4k-only.

Xen HVM guests (using normal VT-x/SVM hardware support) have all page
sizes available.

But lucky to find this thread.  We've had several reports and no luck
isolating what changed.

~Andrew (Xen maintainer)