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Message-ID: <20231025113356.GX3952@nvidia.com> Date: Wed, 25 Oct 2023 08:33:56 -0300 From: Jason Gunthorpe <jgg@...dia.com> To: Baolu Lu <baolu.lu@...ux.intel.com> Cc: Yi Liu <yi.l.liu@...el.com>, joro@...tes.org, alex.williamson@...hat.com, kevin.tian@...el.com, robin.murphy@....com, cohuck@...hat.com, eric.auger@...hat.com, nicolinc@...dia.com, kvm@...r.kernel.org, mjrosato@...ux.ibm.com, chao.p.peng@...ux.intel.com, yi.y.sun@...ux.intel.com, peterx@...hat.com, jasowang@...hat.com, shameerali.kolothum.thodi@...wei.com, lulu@...hat.com, suravee.suthikulpanit@....com, iommu@...ts.linux.dev, linux-kernel@...r.kernel.org, linux-kselftest@...r.kernel.org, zhenzhong.duan@...el.com, joao.m.martins@...cle.com Subject: Re: [PATCH] iommu/vt-d: Enhance capability check for nested parent domain allocation On Wed, Oct 25, 2023 at 09:10:08AM +0800, Baolu Lu wrote: > On 10/24/23 11:00 PM, Yi Liu wrote: > > This adds the scalable mode check before allocating the nested parent domain > > as checking nested capability is not enough. User may turn off scalable mode > > which also means no nested support even if the hardware supports it. > > > > Fixes: c97d1b20d383 ("iommu/vt-d: Add domain_alloc_user op") > > Signed-off-by: Yi Liu <yi.l.liu@...el.com> > > --- > > v1: Based on Joao's dirty page tracking v6 https://github.com/jpemartins/linux/commits/iommufd-v6 > > --- > > drivers/iommu/intel/iommu.c | 2 +- > > drivers/iommu/intel/iommu.h | 2 ++ > > 2 files changed, 3 insertions(+), 1 deletion(-) > > Reviewed-by: Lu Baolu <baolu.lu@...ux.intel.com> > > Hi Jason, > > Given that this fixes a commit in the iommufd tree, can you please pick > this fix as well? Done Thanks Jason
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