From: Jason Gunthorpe <jgg@nvidia.com>
To: Alex Williamson <alex.williamson@redhat.com>
Cc: Peter Xu <peterx@redhat.com>,
linux-mm@kvack.org, linux-kernel@vger.kernel.org,
Sean Christopherson <seanjc@google.com>,
Oscar Salvador <osalvador@suse.de>,
Axel Rasmussen <axelrasmussen@google.com>,
linux-arm-kernel@lists.infradead.org, x86@kernel.org,
Will Deacon <will@kernel.org>, Gavin Shan <gshan@redhat.com>,
Paolo Bonzini <pbonzini@redhat.com>, Zi Yan <ziy@nvidia.com>,
Andrew Morton <akpm@linux-foundation.org>,
Catalin Marinas <catalin.marinas@arm.com>,
Ingo Molnar <mingo@redhat.com>,
Alistair Popple <apopple@nvidia.com>,
Borislav Petkov <bp@alien8.de>,
David Hildenbrand <david@redhat.com>,
Thomas Gleixner <tglx@linutronix.de>,
kvm@vger.kernel.org, Dave Hansen <dave.hansen@linux.intel.com>,
Yan Zhao <yan.y.zhao@intel.com>
Subject: Re: [PATCH 19/19] vfio/pci: Implement huge_fault support
Date: Wed, 14 Aug 2024 13:24:15 -0300 [thread overview]
Message-ID: <20240814162415.GR2032816@nvidia.com> (raw)
In-Reply-To: <20240814100849.601c14da.alex.williamson@redhat.com>
On Wed, Aug 14, 2024 at 10:08:49AM -0600, Alex Williamson wrote:
> There was some alignment and size checking chopped from the previous
> reply that triggered a fallback, but in general PCI BARs are a power of
> two and naturally aligned, so there should always be an order aligned
> pfn.
Sure, though I was mostlyo thinking about how to use this API in other
drivers.
Maybe the device has 2M page alignment only but the VMA was aligned to
1G? It will be called with an order higher than it can support but
that is not an error that should be failed.
Jason
next prev parent reply other threads:[~2024-08-14 16:24 UTC|newest]
Thread overview: 90+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-08-09 16:08 [PATCH 00/19] mm: Support huge pfnmaps Peter Xu
2024-08-09 16:08 ` [PATCH 01/19] mm: Introduce ARCH_SUPPORTS_HUGE_PFNMAP and special bits to pmd/pud Peter Xu
2024-08-09 16:34 ` David Hildenbrand
2024-08-09 17:16 ` Peter Xu
2024-08-09 18:06 ` David Hildenbrand
2024-08-09 16:08 ` [PATCH 02/19] mm: Drop is_huge_zero_pud() Peter Xu
2024-08-09 16:34 ` David Hildenbrand
2024-08-14 12:38 ` Jason Gunthorpe
2024-08-09 16:08 ` [PATCH 03/19] mm: Mark special bits for huge pfn mappings when inject Peter Xu
2024-08-14 12:40 ` Jason Gunthorpe
2024-08-14 15:23 ` Peter Xu
2024-08-14 15:53 ` Jason Gunthorpe
2024-08-09 16:08 ` [PATCH 04/19] mm: Allow THP orders for PFNMAPs Peter Xu
2024-08-14 12:40 ` Jason Gunthorpe
2024-08-09 16:08 ` [PATCH 05/19] mm/gup: Detect huge pfnmap entries in gup-fast Peter Xu
2024-08-09 16:23 ` David Hildenbrand
2024-08-09 16:59 ` Peter Xu
2024-08-14 12:42 ` Jason Gunthorpe
2024-08-14 15:34 ` Peter Xu
2024-08-14 12:41 ` Jason Gunthorpe
2024-08-09 16:08 ` [PATCH 07/19] mm/fork: Accept huge pfnmap entries Peter Xu
2024-08-09 16:32 ` David Hildenbrand
2024-08-09 17:15 ` Peter Xu
2024-08-09 17:59 ` David Hildenbrand
2024-08-12 18:29 ` Peter Xu
2024-08-12 18:50 ` David Hildenbrand
2024-08-12 19:05 ` Peter Xu
2024-08-09 16:08 ` [PATCH 08/19] mm: Always define pxx_pgprot() Peter Xu
2024-08-14 13:09 ` Jason Gunthorpe
2024-08-14 15:43 ` Peter Xu
2024-08-09 16:08 ` [PATCH 09/19] mm: New follow_pfnmap API Peter Xu
2024-08-14 13:19 ` Jason Gunthorpe
2024-08-14 18:24 ` Peter Xu
2024-08-14 22:14 ` Jason Gunthorpe
2024-08-15 15:41 ` Peter Xu
2024-08-15 16:16 ` Jason Gunthorpe
2024-08-15 17:21 ` Peter Xu
2024-08-15 17:24 ` Jason Gunthorpe
2024-08-15 18:52 ` Peter Xu
2024-08-16 23:12 ` Sean Christopherson
2024-08-17 11:05 ` David Hildenbrand
2024-08-21 19:10 ` Peter Xu
2024-08-09 16:09 ` [PATCH 10/19] KVM: Use " Peter Xu
2024-08-09 17:23 ` Axel Rasmussen
2024-08-12 18:58 ` Peter Xu
2024-08-12 22:47 ` Axel Rasmussen
2024-08-12 23:44 ` Sean Christopherson
2024-08-14 13:15 ` Jason Gunthorpe
2024-08-14 14:23 ` Sean Christopherson
2024-08-09 16:09 ` [PATCH 11/19] s390/pci_mmio: " Peter Xu
2024-08-09 16:09 ` [PATCH 12/19] mm/x86/pat: Use the new " Peter Xu
2024-08-09 16:09 ` [PATCH 13/19] vfio: " Peter Xu
2024-08-14 13:20 ` Jason Gunthorpe
2024-08-09 16:09 ` [PATCH 14/19] acrn: " Peter Xu
2024-08-09 16:09 ` [PATCH 15/19] mm/access_process_vm: " Peter Xu
2024-08-09 16:09 ` [PATCH 16/19] mm: Remove follow_pte() Peter Xu
2024-08-09 16:09 ` [PATCH 17/19] mm/x86: Support large pfn mappings Peter Xu
2024-08-09 16:09 ` [PATCH 18/19] mm/arm64: " Peter Xu
2024-08-09 16:09 ` [PATCH 19/19] vfio/pci: Implement huge_fault support Peter Xu
2024-08-14 13:25 ` Jason Gunthorpe
2024-08-14 16:08 ` Alex Williamson
2024-08-14 16:24 ` Jason Gunthorpe [this message]
[not found] ` <20240809160909.1023470-7-peterx@redhat.com>
2024-08-09 16:20 ` [PATCH 06/19] mm/pagewalk: Check pfnmap early for folio_walk_start() David Hildenbrand
2024-08-09 16:54 ` Peter Xu
2024-08-09 17:25 ` David Hildenbrand
2024-08-09 21:37 ` Peter Xu
2024-08-14 13:05 ` Jason Gunthorpe
2024-08-16 9:30 ` David Hildenbrand
2024-08-16 14:21 ` Peter Xu
2024-08-16 17:38 ` Jason Gunthorpe
2024-08-21 18:42 ` Peter Xu
2024-08-16 17:56 ` David Hildenbrand
2024-08-19 12:19 ` Jason Gunthorpe
2024-08-19 14:19 ` Sean Christopherson
2024-08-09 18:12 ` [PATCH 00/19] mm: Support huge pfnmaps David Hildenbrand
2024-08-14 12:37 ` Jason Gunthorpe
2024-08-14 14:35 ` Sean Christopherson
2024-08-14 14:42 ` Paolo Bonzini
2024-08-14 14:43 ` Jason Gunthorpe
2024-08-14 20:54 ` Sean Christopherson
2024-08-14 22:00 ` Sean Christopherson
2024-08-14 22:10 ` Jason Gunthorpe
2024-08-14 23:36 ` Oliver Upton
2024-08-14 23:27 ` Oliver Upton
2024-08-14 23:38 ` Oliver Upton
2024-08-15 0:23 ` Sean Christopherson
2024-08-15 19:20 ` Peter Xu
2024-08-16 3:05 ` Kefeng Wang
2024-08-16 14:33 ` Peter Xu
2024-08-19 13:14 ` Kefeng Wang
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