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[2/2] CHANGELOG: record changed PCI device quarantining default

Message ID 79d35b3a-4f13-fd5b-91db-2805c999b36d@suse.com (mailing list archive)
State New
Headers show
Series IOMMU: adjustments after ""IOMMU: make DMA containment of quarantined devices optional"" | expand

Commit Message

Jan Beulich July 7, 2021, 1:22 p.m. UTC
This amends commit 980d6acf1517 ("IOMMU: make DMA containment of
quarantined devices optional").

Signed-off-by: Jan Beulich <jbeulich@suse.com>

Comments

Paul Durrant July 12, 2021, 6:35 p.m. UTC | #1
On 07/07/2021 14:22, Jan Beulich wrote:
> This amends commit 980d6acf1517 ("IOMMU: make DMA containment of
> quarantined devices optional").
> 
> Signed-off-by: Jan Beulich <jbeulich@suse.com>

Reviewed-by: Paul Durrant <paul@xen.org>

> 
> --- a/CHANGELOG.md
> +++ b/CHANGELOG.md
> @@ -10,6 +10,13 @@ The format is based on [Keep a Changelog
>    - XENSTORED_ROOTDIR environment variable from configuartion files and
>      initscripts, due to being unused.
>   
> +### Changed
> + - Quarantining of passed-through PCI devices no longer defaults to directing I/O to a scratch
> +   page, matching original post-XSA-302 behavior (albeit the change was also backported, first
> +   appearing in 4.12.2 and 4.11.4). Prior (4.13...4.15-like) behavior can be arranged for
> +   either by enabling the IOMMU_QUARANTINE_SCRATCH_PAGE setting at build (configuration) time
> +   or by passing "iommu=quarantine=scratch-page" on the hypervisor command line.
> +
>   ## [4.15.0 UNRELEASED](https://xenbits.xen.org/gitweb/?p=xen.git;a=shortlog;h=RELEASE-4.15.0) - TBD
>   
>   ### Added / support upgraded
>
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Patch

--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -10,6 +10,13 @@  The format is based on [Keep a Changelog
  - XENSTORED_ROOTDIR environment variable from configuartion files and
    initscripts, due to being unused.
 
+### Changed
+ - Quarantining of passed-through PCI devices no longer defaults to directing I/O to a scratch
+   page, matching original post-XSA-302 behavior (albeit the change was also backported, first
+   appearing in 4.12.2 and 4.11.4). Prior (4.13...4.15-like) behavior can be arranged for
+   either by enabling the IOMMU_QUARANTINE_SCRATCH_PAGE setting at build (configuration) time
+   or by passing "iommu=quarantine=scratch-page" on the hypervisor command line.
+
 ## [4.15.0 UNRELEASED](https://xenbits.xen.org/gitweb/?p=xen.git;a=shortlog;h=RELEASE-4.15.0) - TBD
 
 ### Added / support upgraded