From: Joerg Roedel <jroedel@suse.de>
To: Baoquan He <bhe@redhat.com>
Cc: iommu@lists.linux-foundation.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH v8 10/13] iommu/amd: Allocate memory below 4G for dev table if translation pre-enabled
Date: Fri, 28 Jul 2017 13:18:09 +0200 [thread overview]
Message-ID: <20170728111809.GC3431@suse.de> (raw)
In-Reply-To: <20170728111553.GR24304@x1>
On Fri, Jul 28, 2017 at 07:15:53PM +0800, Baoquan He wrote:
> On 07/28/17 at 01:14pm, Joerg Roedel wrote:
> > Yes, exactly, the first device table also needs to be allocated with
> > GFP_DMA32 so that it ends up below 4GB.
>
> Got it, will do. Thanks!
Oh, and you also need to check in the kdump kernel whether the old
device-table is really below 4GB and abort the copy otherwise.
next prev parent reply other threads:[~2017-07-28 11:18 UTC|newest]
Thread overview: 41+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-07-21 8:58 [PATCH v8 00/13] Fix the on-flight DMA issue on system with amd iommu Baoquan He
2017-07-21 8:59 ` [PATCH v8 03/13] Revert "iommu/amd: Suppress IO_PAGE_FAULTs in kdump kernel" Baoquan He
2017-07-21 8:59 ` [PATCH v8 05/13] iommu/amd: Add function copy_dev_tables() Baoquan He
2017-07-27 15:29 ` Joerg Roedel
2017-07-28 3:59 ` Baoquan He
2017-07-21 8:59 ` [PATCH v8 06/13] iommu/amd: copy old trans table from old kernel Baoquan He
2017-07-27 15:38 ` Joerg Roedel
[not found] ` <20170727153825.GM3610-l3A5Bk7waGM@public.gmane.org>
2017-07-28 6:52 ` Baoquan He
[not found] ` <1500627551-12930-1-git-send-email-bhe-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
2017-07-21 8:58 ` [PATCH v8 01/13] iommu/amd: Detect pre enabled translation Baoquan He
2017-07-27 15:04 ` Joerg Roedel
2017-07-28 2:31 ` Baoquan He
2017-07-21 8:59 ` [PATCH v8 02/13] iommu/amd: add several helper functions Baoquan He
2017-07-27 15:06 ` Joerg Roedel
[not found] ` <20170727150612.GK3610-l3A5Bk7waGM@public.gmane.org>
2017-07-28 2:36 ` Baoquan He
2017-07-31 10:01 ` Baoquan He
2017-07-31 10:07 ` Joerg Roedel
2017-07-21 8:59 ` [PATCH v8 04/13] iommu/amd: Define bit fields for DTE particularly Baoquan He
2017-07-21 8:59 ` [PATCH v8 07/13] iommu/amd: Do sanity check for irq remap of old dev table entry Baoquan He
2017-07-21 8:59 ` [PATCH v8 09/13] iommu/amd: Use is_attach_deferred call-back Baoquan He
[not found] ` <1500627551-12930-10-git-send-email-bhe-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
2017-07-27 15:53 ` Joerg Roedel
[not found] ` <20170727155327.GN3610-l3A5Bk7waGM@public.gmane.org>
2017-07-28 4:02 ` Baoquan He
2017-07-21 8:59 ` [PATCH v8 08/13] iommu: Add is_attach_deferred call-back to iommu-ops Baoquan He
2017-07-21 8:59 ` [PATCH v8 10/13] iommu/amd: Allocate memory below 4G for dev table if translation pre-enabled Baoquan He
[not found] ` <1500627551-12930-11-git-send-email-bhe-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
2017-07-27 15:55 ` Joerg Roedel
2017-07-28 9:06 ` Baoquan He
2017-07-28 11:14 ` Joerg Roedel
2017-07-28 11:15 ` Baoquan He
2017-07-28 11:18 ` Joerg Roedel [this message]
[not found] ` <20170728111809.GC3431-l3A5Bk7waGM@public.gmane.org>
2017-07-28 11:26 ` Baoquan He
2017-07-31 10:15 ` Baoquan He
2017-07-31 10:21 ` Joerg Roedel
[not found] ` <20170731102153.GK3431-l3A5Bk7waGM@public.gmane.org>
2017-07-31 10:29 ` Baoquan He
2017-07-21 8:59 ` [PATCH v8 11/13] iommu/amd: Don't copy GCR3 table root pointer Baoquan He
[not found] ` <1500627551-12930-12-git-send-email-bhe-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
2017-07-23 22:33 ` kbuild test robot
[not found] ` <201707240618.mJ6b2eHv%fengguang.wu-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>
2017-07-23 23:53 ` Baoquan He
2017-07-27 15:57 ` Joerg Roedel
[not found] ` <20170727155755.GP3610-l3A5Bk7waGM@public.gmane.org>
2017-07-28 9:07 ` Baoquan He
2017-07-21 8:59 ` [PATCH v8 12/13] iommu/amd: Clear out the GV flag when handle deferred domain attach Baoquan He
2017-07-21 8:59 ` [PATCH v8 13/13] iommu/amd: Disable iommu only if amd_iommu=off is specified Baoquan He
[not found] ` <1500627551-12930-14-git-send-email-bhe-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
2017-07-27 15:58 ` Joerg Roedel
[not found] ` <20170727155852.GQ3610-l3A5Bk7waGM@public.gmane.org>
2017-07-28 9:08 ` Baoquan He
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