From: Jason Gunthorpe <jgg@nvidia.com>
To: "Tian, Kevin" <kevin.tian@intel.com>
Cc: "kvm@vger.kernel.org" <kvm@vger.kernel.org>,
"nouveau@lists.freedesktop.org" <nouveau@lists.freedesktop.org>,
"linux-remoteproc@vger.kernel.org"
<linux-remoteproc@vger.kernel.org>,
"dri-devel@lists.freedesktop.org"
<dri-devel@lists.freedesktop.org>,
"virtualization@lists.linux-foundation.org"
<virtualization@lists.linux-foundation.org>,
"linux-stm32@st-md-mailman.stormreply.com"
<linux-stm32@st-md-mailman.stormreply.com>,
"linux-s390@vger.kernel.org" <linux-s390@vger.kernel.org>,
Matthew Rosato <mjrosato@linux.ibm.com>,
"linux-rdma@vger.kernel.org" <linux-rdma@vger.kernel.org>,
Joerg Roedel <joro@8bytes.org>,
"ath10k@lists.infradead.org" <ath10k@lists.infradead.org>,
"iommu@lists.linux.dev" <iommu@lists.linux.dev>,
Christian Borntraeger <borntraeger@linux.ibm.com>,
"ath11k@lists.infradead.org" <ath11k@lists.infradead.org>,
"linux-media@vger.kernel.org" <linux-media@vger.kernel.org>,
Niklas Schnelle <schnelle@linux.ibm.com>,
"linux-arm-msm@vger.kernel.org" <linux-arm-msm@vger.kernel.org>,
Alex Williamson <alex.williamson@redhat.com>,
"linux-tegra@vger.kernel.org" <linux-tegra@vger.kernel.org>,
"linux-arm-kernel@lists.infradead.org"
<linux-arm-kernel@lists.infradead.org>,
"netdev@vger.kernel.org" <netdev@vger.kernel.org>,
"linux-wireless@vger.kernel.org" <linux-wireless@vger.kernel.org>,
Robin Murphy <robin.murphy@arm.com>,
Lu Baolu <baolu.lu@linux.intel.com>
Subject: Re: [Nouveau] [PATCH 6/8] iommu/intel: Add a gfp parameter to alloc_pgtable_page()
Date: Wed, 18 Jan 2023 11:15:29 -0400 [thread overview]
Message-ID: <Y8gNEUJ9ffSdfH51@nvidia.com> (raw)
In-Reply-To: <BN9PR11MB52769B8225A81D0636FFE5648CC79@BN9PR11MB5276.namprd11.prod.outlook.com>
On Wed, Jan 18, 2023 at 01:18:18AM +0000, Tian, Kevin wrote:
> > From: Jason Gunthorpe <jgg@nvidia.com>
> > Sent: Tuesday, January 17, 2023 9:30 PM
> >
> > On Tue, Jan 17, 2023 at 03:35:08AM +0000, Tian, Kevin wrote:
> > > > From: Jason Gunthorpe <jgg@nvidia.com>
> > > > Sent: Saturday, January 7, 2023 12:43 AM
> > > >
> > > > @@ -2676,7 +2676,7 @@ static int copy_context_table(struct
> > intel_iommu
> > > > *iommu,
> > > > if (!old_ce)
> > > > goto out;
> > > >
> > > > - new_ce = alloc_pgtable_page(iommu->node);
> > > > + new_ce = alloc_pgtable_page(iommu->node,
> > > > GFP_KERNEL);
> > >
> > > GFP_ATOMIC
> >
> > Can't be:
> >
> > old_ce = memremap(old_ce_phys, PAGE_SIZE,
> > MEMREMAP_WB);
> > if (!old_ce)
> > goto out;
> >
> > new_ce = alloc_pgtable_page(iommu->node,
> > GFP_KERNEL);
> > if (!new_ce)
> >
> > memremap() is sleeping.
> >
> > And the only caller is:
> >
> > ctxt_tbls = kcalloc(ctxt_table_entries, sizeof(void *), GFP_KERNEL);
> > if (!ctxt_tbls)
> > goto out_unmap;
> >
> > for (bus = 0; bus < 256; bus++) {
> > ret = copy_context_table(iommu, &old_rt[bus],
> > ctxt_tbls, bus, ext);
> >
>
> Yes, but the patch description says "Push the GFP_ATOMIC to all
> callers." implying it's purely a refactoring w/o changing those
> semantics.
Sure, lets split the patch, it is a good idea
Jason
WARNING: multiple messages have this Message-ID (diff)
From: Jason Gunthorpe <jgg@nvidia.com>
To: "Tian, Kevin" <kevin.tian@intel.com>
Cc: Lu Baolu <baolu.lu@linux.intel.com>,
Joerg Roedel <joro@8bytes.org>,
Matthew Rosato <mjrosato@linux.ibm.com>,
Robin Murphy <robin.murphy@arm.com>,
Alex Williamson <alex.williamson@redhat.com>,
"ath10k@lists.infradead.org" <ath10k@lists.infradead.org>,
"ath11k@lists.infradead.org" <ath11k@lists.infradead.org>,
Christian Borntraeger <borntraeger@linux.ibm.com>,
"dri-devel@lists.freedesktop.org"
<dri-devel@lists.freedesktop.org>,
"iommu@lists.linux.dev" <iommu@lists.linux.dev>,
"kvm@vger.kernel.org" <kvm@vger.kernel.org>,
"linux-arm-kernel@lists.infradead.org"
<linux-arm-kernel@lists.infradead.org>,
"linux-arm-msm@vger.kernel.org" <linux-arm-msm@vger.kernel.org>,
"linux-media@vger.kernel.org" <linux-media@vger.kernel.org>,
"linux-rdma@vger.kernel.org" <linux-rdma@vger.kernel.org>,
"linux-remoteproc@vger.kernel.org"
<linux-remoteproc@vger.kernel.org>,
"linux-s390@vger.kernel.org" <linux-s390@vger.kernel.org>,
"linux-stm32@st-md-mailman.stormreply.com"
<linux-stm32@st-md-mailman.stormreply.com>,
"linux-tegra@vger.kernel.org" <linux-tegra@vger.kernel.org>,
"linux-wireless@vger.kernel.org" <linux-wireless@vger.kernel.org>,
"netdev@vger.kernel.org" <netdev@vger.kernel.org>,
"nouveau@lists.freedesktop.org" <nouveau@lists.freedesktop.org>,
Niklas Schnelle <schnelle@linux.ibm.com>,
"virtualization@lists.linux-foundation.org"
<virtualization@lists.linux-foundation.org>
Subject: Re: [PATCH 6/8] iommu/intel: Add a gfp parameter to alloc_pgtable_page()
Date: Wed, 18 Jan 2023 11:15:29 -0400 [thread overview]
Message-ID: <Y8gNEUJ9ffSdfH51@nvidia.com> (raw)
In-Reply-To: <BN9PR11MB52769B8225A81D0636FFE5648CC79@BN9PR11MB5276.namprd11.prod.outlook.com>
On Wed, Jan 18, 2023 at 01:18:18AM +0000, Tian, Kevin wrote:
> > From: Jason Gunthorpe <jgg@nvidia.com>
> > Sent: Tuesday, January 17, 2023 9:30 PM
> >
> > On Tue, Jan 17, 2023 at 03:35:08AM +0000, Tian, Kevin wrote:
> > > > From: Jason Gunthorpe <jgg@nvidia.com>
> > > > Sent: Saturday, January 7, 2023 12:43 AM
> > > >
> > > > @@ -2676,7 +2676,7 @@ static int copy_context_table(struct
> > intel_iommu
> > > > *iommu,
> > > > if (!old_ce)
> > > > goto out;
> > > >
> > > > - new_ce = alloc_pgtable_page(iommu->node);
> > > > + new_ce = alloc_pgtable_page(iommu->node,
> > > > GFP_KERNEL);
> > >
> > > GFP_ATOMIC
> >
> > Can't be:
> >
> > old_ce = memremap(old_ce_phys, PAGE_SIZE,
> > MEMREMAP_WB);
> > if (!old_ce)
> > goto out;
> >
> > new_ce = alloc_pgtable_page(iommu->node,
> > GFP_KERNEL);
> > if (!new_ce)
> >
> > memremap() is sleeping.
> >
> > And the only caller is:
> >
> > ctxt_tbls = kcalloc(ctxt_table_entries, sizeof(void *), GFP_KERNEL);
> > if (!ctxt_tbls)
> > goto out_unmap;
> >
> > for (bus = 0; bus < 256; bus++) {
> > ret = copy_context_table(iommu, &old_rt[bus],
> > ctxt_tbls, bus, ext);
> >
>
> Yes, but the patch description says "Push the GFP_ATOMIC to all
> callers." implying it's purely a refactoring w/o changing those
> semantics.
Sure, lets split the patch, it is a good idea
Jason
WARNING: multiple messages have this Message-ID (diff)
From: Jason Gunthorpe <jgg@nvidia.com>
To: "Tian, Kevin" <kevin.tian@intel.com>
Cc: Lu Baolu <baolu.lu@linux.intel.com>,
Joerg Roedel <joro@8bytes.org>,
Matthew Rosato <mjrosato@linux.ibm.com>,
Robin Murphy <robin.murphy@arm.com>,
Alex Williamson <alex.williamson@redhat.com>,
"ath10k@lists.infradead.org" <ath10k@lists.infradead.org>,
"ath11k@lists.infradead.org" <ath11k@lists.infradead.org>,
Christian Borntraeger <borntraeger@linux.ibm.com>,
"dri-devel@lists.freedesktop.org"
<dri-devel@lists.freedesktop.org>,
"iommu@lists.linux.dev" <iommu@lists.linux.dev>,
"kvm@vger.kernel.org" <kvm@vger.kernel.org>,
"linux-arm-kernel@lists.infradead.org"
<linux-arm-kernel@lists.infradead.org>,
"linux-arm-msm@vger.kernel.org" <linux-arm-msm@vger.kernel.org>,
"linux-media@vger.kernel.org" <linux-media@vger.kernel.org>,
"linux-rdma@vger.kernel.org" <linux-rdma@vger.kernel.org>,
"linux-remoteproc@vger.kernel.org"
<linux-remoteproc@vger.kernel.org>,
"linux-s390@vger.kernel.org" <linux-s390@vger.kernel.org>,
"linux-stm32@st-md-mailman.stormreply.com"
<linux-stm32@st-md-mailman.stormreply.com>,
"linux-tegra@vger.kernel.org" <linux-tegra@vger.kernel.org>,
"linux-wireless@vger.kernel.org" <linux-wireless@vger.kernel.org>,
"netdev@vger.kernel.org" <netdev@vger.kernel.org>,
"nouveau@lists.freedesktop.org" <nouveau@lists.freedesktop.org>,
Niklas Schnelle <schnelle@linux.ibm.com>,
"virtualization@lists.linux-foundation.org"
<virtualization@lists.linux-foundation.org>
Subject: Re: [PATCH 6/8] iommu/intel: Add a gfp parameter to alloc_pgtable_page()
Date: Wed, 18 Jan 2023 11:15:29 -0400 [thread overview]
Message-ID: <Y8gNEUJ9ffSdfH51@nvidia.com> (raw)
In-Reply-To: <BN9PR11MB52769B8225A81D0636FFE5648CC79@BN9PR11MB5276.namprd11.prod.outlook.com>
On Wed, Jan 18, 2023 at 01:18:18AM +0000, Tian, Kevin wrote:
> > From: Jason Gunthorpe <jgg@nvidia.com>
> > Sent: Tuesday, January 17, 2023 9:30 PM
> >
> > On Tue, Jan 17, 2023 at 03:35:08AM +0000, Tian, Kevin wrote:
> > > > From: Jason Gunthorpe <jgg@nvidia.com>
> > > > Sent: Saturday, January 7, 2023 12:43 AM
> > > >
> > > > @@ -2676,7 +2676,7 @@ static int copy_context_table(struct
> > intel_iommu
> > > > *iommu,
> > > > if (!old_ce)
> > > > goto out;
> > > >
> > > > - new_ce = alloc_pgtable_page(iommu->node);
> > > > + new_ce = alloc_pgtable_page(iommu->node,
> > > > GFP_KERNEL);
> > >
> > > GFP_ATOMIC
> >
> > Can't be:
> >
> > old_ce = memremap(old_ce_phys, PAGE_SIZE,
> > MEMREMAP_WB);
> > if (!old_ce)
> > goto out;
> >
> > new_ce = alloc_pgtable_page(iommu->node,
> > GFP_KERNEL);
> > if (!new_ce)
> >
> > memremap() is sleeping.
> >
> > And the only caller is:
> >
> > ctxt_tbls = kcalloc(ctxt_table_entries, sizeof(void *), GFP_KERNEL);
> > if (!ctxt_tbls)
> > goto out_unmap;
> >
> > for (bus = 0; bus < 256; bus++) {
> > ret = copy_context_table(iommu, &old_rt[bus],
> > ctxt_tbls, bus, ext);
> >
>
> Yes, but the patch description says "Push the GFP_ATOMIC to all
> callers." implying it's purely a refactoring w/o changing those
> semantics.
Sure, lets split the patch, it is a good idea
Jason
--
ath11k mailing list
ath11k@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/ath11k
WARNING: multiple messages have this Message-ID (diff)
From: Jason Gunthorpe <jgg@nvidia.com>
To: "Tian, Kevin" <kevin.tian@intel.com>
Cc: "kvm@vger.kernel.org" <kvm@vger.kernel.org>,
"nouveau@lists.freedesktop.org" <nouveau@lists.freedesktop.org>,
"linux-remoteproc@vger.kernel.org"
<linux-remoteproc@vger.kernel.org>,
"dri-devel@lists.freedesktop.org"
<dri-devel@lists.freedesktop.org>,
"virtualization@lists.linux-foundation.org"
<virtualization@lists.linux-foundation.org>,
"linux-stm32@st-md-mailman.stormreply.com"
<linux-stm32@st-md-mailman.stormreply.com>,
"linux-s390@vger.kernel.org" <linux-s390@vger.kernel.org>,
Matthew Rosato <mjrosato@linux.ibm.com>,
"linux-rdma@vger.kernel.org" <linux-rdma@vger.kernel.org>,
Joerg Roedel <joro@8bytes.org>,
"ath10k@lists.infradead.org" <ath10k@lists.infradead.org>,
"iommu@lists.linux.dev" <iommu@lists.linux.dev>,
Christian Borntraeger <borntraeger@linux.ibm.com>,
"ath11k@lists.infradead.org" <ath11k@lists.infradead.org>,
"linux-media@vger.kernel.org" <linux-media@vger.kernel.org>,
Niklas Schnelle <schnelle@linux.ibm.com>,
"linux-arm-msm@vger.kernel.org" <linux-arm-msm@vger.kernel.org>,
Alex Williamson <alex.williamson@redhat.com>,
"linux-tegra@vger.kernel.org" <linux-tegra@vger.kernel.org>,
"linux-arm-kernel@lists.infradead.org"
<linux-arm-kernel@lists.infradead.org>,
"netdev@vger.kernel.org" <netdev@vger.kernel.org>,
"linux-wireless@vger.kernel.org" <linux-wireless@vger.kernel.org>,
Robin Murphy <robin.murphy@arm.com>,
Lu Baolu <baolu.lu@linux.intel.com>
Subject: Re: [PATCH 6/8] iommu/intel: Add a gfp parameter to alloc_pgtable_page()
Date: Wed, 18 Jan 2023 11:15:29 -0400 [thread overview]
Message-ID: <Y8gNEUJ9ffSdfH51@nvidia.com> (raw)
In-Reply-To: <BN9PR11MB52769B8225A81D0636FFE5648CC79@BN9PR11MB5276.namprd11.prod.outlook.com>
On Wed, Jan 18, 2023 at 01:18:18AM +0000, Tian, Kevin wrote:
> > From: Jason Gunthorpe <jgg@nvidia.com>
> > Sent: Tuesday, January 17, 2023 9:30 PM
> >
> > On Tue, Jan 17, 2023 at 03:35:08AM +0000, Tian, Kevin wrote:
> > > > From: Jason Gunthorpe <jgg@nvidia.com>
> > > > Sent: Saturday, January 7, 2023 12:43 AM
> > > >
> > > > @@ -2676,7 +2676,7 @@ static int copy_context_table(struct
> > intel_iommu
> > > > *iommu,
> > > > if (!old_ce)
> > > > goto out;
> > > >
> > > > - new_ce = alloc_pgtable_page(iommu->node);
> > > > + new_ce = alloc_pgtable_page(iommu->node,
> > > > GFP_KERNEL);
> > >
> > > GFP_ATOMIC
> >
> > Can't be:
> >
> > old_ce = memremap(old_ce_phys, PAGE_SIZE,
> > MEMREMAP_WB);
> > if (!old_ce)
> > goto out;
> >
> > new_ce = alloc_pgtable_page(iommu->node,
> > GFP_KERNEL);
> > if (!new_ce)
> >
> > memremap() is sleeping.
> >
> > And the only caller is:
> >
> > ctxt_tbls = kcalloc(ctxt_table_entries, sizeof(void *), GFP_KERNEL);
> > if (!ctxt_tbls)
> > goto out_unmap;
> >
> > for (bus = 0; bus < 256; bus++) {
> > ret = copy_context_table(iommu, &old_rt[bus],
> > ctxt_tbls, bus, ext);
> >
>
> Yes, but the patch description says "Push the GFP_ATOMIC to all
> callers." implying it's purely a refactoring w/o changing those
> semantics.
Sure, lets split the patch, it is a good idea
Jason
WARNING: multiple messages have this Message-ID (diff)
From: Jason Gunthorpe <jgg@nvidia.com>
To: "Tian, Kevin" <kevin.tian@intel.com>
Cc: Lu Baolu <baolu.lu@linux.intel.com>,
Joerg Roedel <joro@8bytes.org>,
Matthew Rosato <mjrosato@linux.ibm.com>,
Robin Murphy <robin.murphy@arm.com>,
Alex Williamson <alex.williamson@redhat.com>,
"ath10k@lists.infradead.org" <ath10k@lists.infradead.org>,
"ath11k@lists.infradead.org" <ath11k@lists.infradead.org>,
Christian Borntraeger <borntraeger@linux.ibm.com>,
"dri-devel@lists.freedesktop.org"
<dri-devel@lists.freedesktop.org>,
"iommu@lists.linux.dev" <iommu@lists.linux.dev>,
"kvm@vger.kernel.org" <kvm@vger.kernel.org>,
"linux-arm-kernel@lists.infradead.org"
<linux-arm-kernel@lists.infradead.org>,
"linux-arm-msm@vger.kernel.org" <linux-arm-msm@vger.kernel.org>,
"linux-media@vger.kernel.org" <linux-media@vger.kernel.org>,
"linux-rdma@vger.kernel.org" <linux-rdma@vger.kernel.org>,
"linux-remoteproc@vger.kernel.org"
<linux-remoteproc@vger.kernel.org>,
"linux-s390@vger.kernel.org" <linux-s390@vger.kernel.org>,
"linux-stm32@st-md-mailman.stormreply.com"
<linux-stm32@st-md-mailman.stormreply.com>,
"linux-tegra@vger.kernel.org" <linux-tegra@vger.kernel.org>,
"linux-wireless@vger.kernel.org" <linux-wireless@vger.kernel.org>,
"netdev@vger.kernel.org" <netdev@vger.kernel.org>,
"nouveau@lists.freedesktop.org" <nouveau@lists.freedesktop.org>,
Niklas Schnelle <schnelle@linux.ibm.com>,
"virtualization@lists.linux-foundation.org"
<virtualization@lists.linux-foundation.org>
Subject: Re: [PATCH 6/8] iommu/intel: Add a gfp parameter to alloc_pgtable_page()
Date: Wed, 18 Jan 2023 11:15:29 -0400 [thread overview]
Message-ID: <Y8gNEUJ9ffSdfH51@nvidia.com> (raw)
In-Reply-To: <BN9PR11MB52769B8225A81D0636FFE5648CC79@BN9PR11MB5276.namprd11.prod.outlook.com>
On Wed, Jan 18, 2023 at 01:18:18AM +0000, Tian, Kevin wrote:
> > From: Jason Gunthorpe <jgg@nvidia.com>
> > Sent: Tuesday, January 17, 2023 9:30 PM
> >
> > On Tue, Jan 17, 2023 at 03:35:08AM +0000, Tian, Kevin wrote:
> > > > From: Jason Gunthorpe <jgg@nvidia.com>
> > > > Sent: Saturday, January 7, 2023 12:43 AM
> > > >
> > > > @@ -2676,7 +2676,7 @@ static int copy_context_table(struct
> > intel_iommu
> > > > *iommu,
> > > > if (!old_ce)
> > > > goto out;
> > > >
> > > > - new_ce = alloc_pgtable_page(iommu->node);
> > > > + new_ce = alloc_pgtable_page(iommu->node,
> > > > GFP_KERNEL);
> > >
> > > GFP_ATOMIC
> >
> > Can't be:
> >
> > old_ce = memremap(old_ce_phys, PAGE_SIZE,
> > MEMREMAP_WB);
> > if (!old_ce)
> > goto out;
> >
> > new_ce = alloc_pgtable_page(iommu->node,
> > GFP_KERNEL);
> > if (!new_ce)
> >
> > memremap() is sleeping.
> >
> > And the only caller is:
> >
> > ctxt_tbls = kcalloc(ctxt_table_entries, sizeof(void *), GFP_KERNEL);
> > if (!ctxt_tbls)
> > goto out_unmap;
> >
> > for (bus = 0; bus < 256; bus++) {
> > ret = copy_context_table(iommu, &old_rt[bus],
> > ctxt_tbls, bus, ext);
> >
>
> Yes, but the patch description says "Push the GFP_ATOMIC to all
> callers." implying it's purely a refactoring w/o changing those
> semantics.
Sure, lets split the patch, it is a good idea
Jason
_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
WARNING: multiple messages have this Message-ID (diff)
From: Jason Gunthorpe <jgg@nvidia.com>
To: "Tian, Kevin" <kevin.tian@intel.com>
Cc: Lu Baolu <baolu.lu@linux.intel.com>,
Joerg Roedel <joro@8bytes.org>,
Matthew Rosato <mjrosato@linux.ibm.com>,
Robin Murphy <robin.murphy@arm.com>,
Alex Williamson <alex.williamson@redhat.com>,
"ath10k@lists.infradead.org" <ath10k@lists.infradead.org>,
"ath11k@lists.infradead.org" <ath11k@lists.infradead.org>,
Christian Borntraeger <borntraeger@linux.ibm.com>,
"dri-devel@lists.freedesktop.org"
<dri-devel@lists.freedesktop.org>,
"iommu@lists.linux.dev" <iommu@lists.linux.dev>,
"kvm@vger.kernel.org" <kvm@vger.kernel.org>,
"linux-arm-kernel@lists.infradead.org"
<linux-arm-kernel@lists.infradead.org>,
"linux-arm-msm@vger.kernel.org" <linux-arm-msm@vger.kernel.org>,
"linux-media@vger.kernel.org" <linux-media@vger.kernel.org>,
"linux-rdma@vger.kernel.org" <linux-rdma@vger.kernel.org>,
"linux-remoteproc@vger.kernel.org"
<linux-remoteproc@vger.kernel.org>,
"linux-s390@vger.kernel.org" <linux-s390@vger.kernel.org>,
"linux-stm32@st-md-mailman.stormreply.com"
<linux-stm32@st-md-mailman.stormreply.com>,
"linux-tegra@vger.kernel.org" <linux-tegra@vger.kernel.org>,
"linux-wireless@vger.kernel.org" <linux-wireless@vger.kernel.org>,
"netdev@vger.kernel.org" <netdev@vger.kernel.org>,
"nouveau@lists.freedesktop.org" <nouveau@lists.freedesktop.org>,
Niklas Schnelle <schnelle@linux.ibm.com>,
"virtualization@lists.linux-foundation.org"
<virtualization@lists.linux-foundation.org>
Subject: Re: [PATCH 6/8] iommu/intel: Add a gfp parameter to alloc_pgtable_page()
Date: Wed, 18 Jan 2023 11:15:29 -0400 [thread overview]
Message-ID: <Y8gNEUJ9ffSdfH51@nvidia.com> (raw)
In-Reply-To: <BN9PR11MB52769B8225A81D0636FFE5648CC79@BN9PR11MB5276.namprd11.prod.outlook.com>
On Wed, Jan 18, 2023 at 01:18:18AM +0000, Tian, Kevin wrote:
> > From: Jason Gunthorpe <jgg@nvidia.com>
> > Sent: Tuesday, January 17, 2023 9:30 PM
> >
> > On Tue, Jan 17, 2023 at 03:35:08AM +0000, Tian, Kevin wrote:
> > > > From: Jason Gunthorpe <jgg@nvidia.com>
> > > > Sent: Saturday, January 7, 2023 12:43 AM
> > > >
> > > > @@ -2676,7 +2676,7 @@ static int copy_context_table(struct
> > intel_iommu
> > > > *iommu,
> > > > if (!old_ce)
> > > > goto out;
> > > >
> > > > - new_ce = alloc_pgtable_page(iommu->node);
> > > > + new_ce = alloc_pgtable_page(iommu->node,
> > > > GFP_KERNEL);
> > >
> > > GFP_ATOMIC
> >
> > Can't be:
> >
> > old_ce = memremap(old_ce_phys, PAGE_SIZE,
> > MEMREMAP_WB);
> > if (!old_ce)
> > goto out;
> >
> > new_ce = alloc_pgtable_page(iommu->node,
> > GFP_KERNEL);
> > if (!new_ce)
> >
> > memremap() is sleeping.
> >
> > And the only caller is:
> >
> > ctxt_tbls = kcalloc(ctxt_table_entries, sizeof(void *), GFP_KERNEL);
> > if (!ctxt_tbls)
> > goto out_unmap;
> >
> > for (bus = 0; bus < 256; bus++) {
> > ret = copy_context_table(iommu, &old_rt[bus],
> > ctxt_tbls, bus, ext);
> >
>
> Yes, but the patch description says "Push the GFP_ATOMIC to all
> callers." implying it's purely a refactoring w/o changing those
> semantics.
Sure, lets split the patch, it is a good idea
Jason
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next prev parent reply other threads:[~2023-01-18 15:15 UTC|newest]
Thread overview: 144+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-01-06 16:42 [Nouveau] [PATCH 0/8] Let iommufd charge IOPTE allocations to the memory cgroup Jason Gunthorpe
2023-01-06 16:42 ` Jason Gunthorpe
2023-01-06 16:42 ` Jason Gunthorpe
2023-01-06 16:42 ` Jason Gunthorpe
2023-01-06 16:42 ` Jason Gunthorpe
2023-01-06 16:42 ` Jason Gunthorpe
2023-01-06 16:42 ` [Nouveau] [PATCH 1/8] iommu: Add a gfp parameter to iommu_map() Jason Gunthorpe
2023-01-06 16:42 ` Jason Gunthorpe
2023-01-06 16:42 ` Jason Gunthorpe
2023-01-06 16:42 ` Jason Gunthorpe
2023-01-06 16:42 ` Jason Gunthorpe
2023-01-06 16:42 ` Jason Gunthorpe
2023-01-06 17:15 ` Robin Murphy
2023-01-06 17:15 ` Robin Murphy
2023-01-06 17:15 ` Robin Murphy
2023-01-06 17:15 ` Robin Murphy
2023-01-06 17:15 ` Robin Murphy
2023-01-06 17:15 ` Robin Murphy
2023-01-06 17:15 ` [Nouveau] " Robin Murphy
2023-01-06 17:24 ` Jason Gunthorpe
2023-01-06 17:24 ` Jason Gunthorpe
2023-01-06 17:24 ` Jason Gunthorpe
2023-01-06 17:24 ` Jason Gunthorpe
2023-01-06 17:24 ` Jason Gunthorpe
2023-01-06 17:24 ` Jason Gunthorpe
2023-01-20 9:24 ` Joerg Roedel
2023-01-20 9:24 ` Joerg Roedel
2023-01-20 9:24 ` Joerg Roedel
2023-01-20 9:24 ` Joerg Roedel
2023-01-20 9:24 ` Joerg Roedel
2023-01-20 9:24 ` Joerg Roedel
2023-01-20 9:24 ` [Nouveau] " Joerg Roedel
2023-01-20 17:53 ` Jason Gunthorpe
2023-01-20 17:53 ` Jason Gunthorpe
2023-01-20 17:53 ` Jason Gunthorpe
2023-01-20 17:53 ` Jason Gunthorpe
2023-01-20 17:53 ` Jason Gunthorpe
2023-01-20 17:53 ` [Nouveau] " Jason Gunthorpe
2023-01-23 9:59 ` Joerg Roedel
2023-01-23 9:59 ` Joerg Roedel
2023-01-23 9:59 ` Joerg Roedel
2023-01-23 9:59 ` Joerg Roedel
2023-01-23 9:59 ` Joerg Roedel
2023-01-23 9:59 ` Joerg Roedel
2023-01-23 9:59 ` Joerg Roedel
2023-01-16 18:12 ` [Nouveau] " Jason Gunthorpe
2023-01-16 18:12 ` Jason Gunthorpe
2023-01-16 18:12 ` Jason Gunthorpe
2023-01-16 18:12 ` Jason Gunthorpe
2023-01-16 18:12 ` Jason Gunthorpe
2023-01-16 18:12 ` Jason Gunthorpe
2023-01-06 16:42 ` [Nouveau] [PATCH 2/8] iommu: Remove iommu_map_atomic() Jason Gunthorpe
2023-01-06 16:42 ` Jason Gunthorpe
2023-01-06 16:42 ` Jason Gunthorpe
2023-01-06 16:42 ` Jason Gunthorpe
2023-01-06 16:42 ` Jason Gunthorpe
2023-01-06 16:42 ` Jason Gunthorpe
2023-01-06 16:42 ` [Nouveau] [PATCH 3/8] iommu: Add a gfp parameter to iommu_map_sg() Jason Gunthorpe
2023-01-06 16:42 ` Jason Gunthorpe
2023-01-06 16:42 ` Jason Gunthorpe
2023-01-06 16:42 ` Jason Gunthorpe
2023-01-06 16:42 ` Jason Gunthorpe
2023-01-06 16:42 ` Jason Gunthorpe
2023-01-06 16:42 ` [Nouveau] [PATCH 4/8] iommu/dma: Use the gfp parameter in __iommu_dma_alloc_noncontiguous() Jason Gunthorpe
2023-01-06 16:42 ` Jason Gunthorpe
2023-01-06 16:42 ` Jason Gunthorpe
2023-01-06 16:42 ` Jason Gunthorpe
2023-01-06 16:42 ` Jason Gunthorpe
2023-01-06 16:42 ` Jason Gunthorpe
2023-01-06 16:42 ` [Nouveau] [PATCH 5/8] iommufd: Use GFP_KERNEL_ACCOUNT for iommu_map() Jason Gunthorpe
2023-01-06 16:42 ` Jason Gunthorpe
2023-01-06 16:42 ` Jason Gunthorpe
2023-01-06 16:42 ` Jason Gunthorpe
2023-01-06 16:42 ` Jason Gunthorpe
2023-01-06 16:42 ` Jason Gunthorpe
2023-01-06 16:42 ` [Nouveau] [PATCH 6/8] iommu/intel: Add a gfp parameter to alloc_pgtable_page() Jason Gunthorpe
2023-01-06 16:42 ` Jason Gunthorpe
2023-01-06 16:42 ` Jason Gunthorpe
2023-01-06 16:42 ` Jason Gunthorpe
2023-01-06 16:42 ` Jason Gunthorpe
2023-01-06 16:42 ` Jason Gunthorpe
2023-01-17 3:35 ` Tian, Kevin
2023-01-17 3:35 ` [Nouveau] " Tian, Kevin
2023-01-17 3:35 ` Tian, Kevin
2023-01-17 3:35 ` Tian, Kevin
2023-01-17 3:35 ` Tian, Kevin
2023-01-17 3:35 ` Tian, Kevin
2023-01-17 3:35 ` Tian, Kevin
2023-01-17 13:30 ` Jason Gunthorpe
2023-01-17 13:30 ` Jason Gunthorpe
2023-01-17 13:30 ` Jason Gunthorpe
2023-01-17 13:30 ` Jason Gunthorpe
2023-01-17 13:30 ` Jason Gunthorpe
2023-01-17 13:30 ` [Nouveau] " Jason Gunthorpe
2023-01-18 1:18 ` Tian, Kevin
2023-01-18 1:18 ` [Nouveau] " Tian, Kevin
2023-01-18 1:18 ` Tian, Kevin
2023-01-18 1:18 ` Tian, Kevin
2023-01-18 1:18 ` Tian, Kevin
2023-01-18 1:18 ` Tian, Kevin
2023-01-18 1:18 ` Tian, Kevin
2023-01-18 15:15 ` Jason Gunthorpe [this message]
2023-01-18 15:15 ` Jason Gunthorpe
2023-01-18 15:15 ` Jason Gunthorpe
2023-01-18 15:15 ` Jason Gunthorpe
2023-01-18 15:15 ` Jason Gunthorpe
2023-01-18 15:15 ` Jason Gunthorpe
2023-01-06 16:42 ` [Nouveau] [PATCH 7/8] iommu/intel: Support the gfp argument to the map_pages op Jason Gunthorpe
2023-01-06 16:42 ` Jason Gunthorpe
2023-01-06 16:42 ` Jason Gunthorpe
2023-01-06 16:42 ` Jason Gunthorpe
2023-01-06 16:42 ` Jason Gunthorpe
2023-01-06 16:42 ` Jason Gunthorpe
2023-01-17 3:38 ` Tian, Kevin
2023-01-17 3:38 ` [Nouveau] " Tian, Kevin
2023-01-17 3:38 ` Tian, Kevin
2023-01-17 3:38 ` Tian, Kevin
2023-01-17 3:38 ` Tian, Kevin
2023-01-17 3:38 ` Tian, Kevin
2023-01-17 3:38 ` Tian, Kevin
2023-01-17 8:35 ` Baolu Lu
2023-01-17 8:35 ` [Nouveau] " Baolu Lu
2023-01-17 8:35 ` Baolu Lu
2023-01-17 8:35 ` Baolu Lu
2023-01-17 8:35 ` Baolu Lu
2023-01-17 8:35 ` Baolu Lu
2023-01-17 13:28 ` Jason Gunthorpe
2023-01-17 13:28 ` Jason Gunthorpe
2023-01-17 13:28 ` Jason Gunthorpe
2023-01-17 13:28 ` Jason Gunthorpe
2023-01-17 13:28 ` Jason Gunthorpe
2023-01-17 13:28 ` [Nouveau] " Jason Gunthorpe
2023-01-06 16:42 ` [Nouveau] [PATCH 8/8] iommu/s390: Push the gfp parameter to the kmem_cache_alloc()'s Jason Gunthorpe
2023-01-06 16:42 ` Jason Gunthorpe
2023-01-06 16:42 ` Jason Gunthorpe
2023-01-06 16:42 ` Jason Gunthorpe
2023-01-06 16:42 ` Jason Gunthorpe
2023-01-06 16:42 ` Jason Gunthorpe
2023-01-17 8:49 ` Niklas Schnelle
2023-01-17 8:49 ` [Nouveau] " Niklas Schnelle
2023-01-17 8:49 ` Niklas Schnelle
2023-01-17 8:49 ` Niklas Schnelle
2023-01-17 8:49 ` Niklas Schnelle
2023-01-17 8:49 ` Niklas Schnelle
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