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

[Paul Durrant <xadimgnik@xxxxxxxxx>]

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@xxxxxxxx>
Reviewed-by: Paul Durrant <paul@xxxxxxx>

> --- 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