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Re: [PATCH 1/5] iommu/x86: fix IVMD/RMRR range checker loop increment


  • To: Roger Pau Monne <roger.pau@xxxxxxxxxx>
  • From: Jan Beulich <jbeulich@xxxxxxxx>
  • Date: Wed, 14 Feb 2024 12:51:36 +0100
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  • Cc: Paul Durrant <paul@xxxxxxx>, xen-devel@xxxxxxxxxxxxxxxxxxxx
  • Delivery-date: Wed, 14 Feb 2024 11:51:42 +0000
  • List-id: Xen developer discussion <xen-devel.lists.xenproject.org>

On 14.02.2024 11:37, Roger Pau Monne wrote:
> mfn_add() doesn't store the incremented value in the parameter, and instead
> returns it to the caller.  As a result, the loop in iommu_unity_region_ok()
> didn't make progress.  Fix it by storing the incremented value.
> 
> Fixes: e45801dea17b ('iommu/x86: introduce a generic IVMD/RMRR range validity 
> helper')
> Signed-off-by: Roger Pau Monné <roger.pau@xxxxxxxxxx>

Reviewed-by: Jan Beulich <jbeulich@xxxxxxxx>

Should Andrew get a Reported-by here? And surely we want to list the
Coverity ID as well? (Happy to take of both while committing, so long
as you agree.)

Jan



 


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