linux-kernel - Re: [PATCH kernel v11 25/34] powerpc/powernv/ioda2: Introduce helpers to allocate TCE pages

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <20150601072922.GO22789@voom.redhat.com>
Date:	Mon, 1 Jun 2015 17:29:22 +1000
From:	David Gibson <david@...son.dropbear.id.au>
To:	Alexey Kardashevskiy <aik@...abs.ru>
Cc:	linuxppc-dev@...ts.ozlabs.org,
	Alex Williamson <alex.williamson@...hat.com>,
	Benjamin Herrenschmidt <benh@...nel.crashing.org>,
	Gavin Shan <gwshan@...ux.vnet.ibm.com>,
	Paul Mackerras <paulus@...ba.org>, kvm@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH kernel v11 25/34] powerpc/powernv/ioda2: Introduce
 helpers to allocate TCE pages

On Fri, May 29, 2015 at 06:44:49PM +1000, Alexey Kardashevskiy wrote:
> This is a part of moving TCE table allocation into an iommu_ops
> callback to support multiple IOMMU groups per one VFIO container.
> 
> This moves the code which allocates the actual TCE tables to helpers:
> pnv_pci_ioda2_table_alloc_pages() and pnv_pci_ioda2_table_free_pages().
> These do not allocate/free the iommu_table struct.
> 
> This enforces window size to be a power of two.
> 
> This should cause no behavioural change.
> 
> Signed-off-by: Alexey Kardashevskiy <aik@...abs.ru>
> Reviewed-by: Gavin Shan <gwshan@...ux.vnet.ibm.com>

Reviewed-by: David Gibson <david@...son.dropbear.id.au>

-- 
David Gibson			| I'll have my music baroque, and my code
david AT gibson.dropbear.id.au	| minimalist, thank you.  NOT _the_ _other_
				| _way_ _around_!
http://www.ozlabs.org/~dgibson

Content of type "application/pgp-signature" skipped