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[PATCH 0/3] Xen: grant table related adjustments following recent XSAs

To: Juergen Gross <jgross@xxxxxxxx>, Boris Ostrovsky <boris.ostrovsky@xxxxxxxxxx>, Stefano Stabellini <sstabellini@xxxxxxxxxx>
From: Jan Beulich <jbeulich@xxxxxxxx>
Date: Wed, 10 Mar 2021 11:44:10 +0100
Cc: "xen-devel@xxxxxxxxxxxxxxxxxxxx" <xen-devel@xxxxxxxxxxxxxxxxxxxx>
Delivery-date: Wed, 10 Mar 2021 10:44:14 +0000
List-id: Xen developer discussion <xen-devel.lists.xenproject.org>

While addressing the XSAs a number of further oddities were noticed.
Try to take care of them.

1: gntdev: don't needlessly allocate k{,un}map_ops[]
2: gnttab: introduce common INVALID_GRANT_{HANDLE,REF}
3: gntdev: don't needlessly use kvcalloc()

Jan

Follow-Ups:
- Re: [PATCH 0/3] Xen: grant table related adjustments following recent XSAs
  - From: Boris Ostrovsky
- [PATCH 3/3] Xen/gntdev: don't needlessly use kvcalloc()
  - From: Jan Beulich
- [PATCH 2/3] Xen/gnttab: introduce common INVALID_GRANT_{HANDLE,REF}
  - From: Jan Beulich
- [PATCH 1/3] Xen/gntdev: don't needlessly allocate k{,un}map_ops[]
  - From: Jan Beulich

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