From: Boris Brezillon <boris.brezillon@collabora.com>
To: Daniel Almeida <daniel.almeida@collabora.com>
Cc: "Alice Ryhl" <aliceryhl@google.com>,
"Miguel Ojeda" <ojeda@kernel.org>,
"Will Deacon" <will@kernel.org>,
"Boqun Feng" <boqun.feng@gmail.com>,
"Gary Guo" <gary@garyguo.net>,
"Björn Roy Baron" <bjorn3_gh@protonmail.com>,
"Benno Lossin" <lossin@kernel.org>,
"Andreas Hindborg" <a.hindborg@kernel.org>,
"Trevor Gross" <tmgross@umich.edu>,
"Danilo Krummrich" <dakr@kernel.org>,
"Joerg Roedel" <joro@8bytes.org>,
"Robin Murphy" <robin.murphy@arm.com>,
"Lorenzo Stoakes" <lorenzo.stoakes@oracle.com>,
"Liam R. Howlett" <Liam.Howlett@oracle.com>,
"Asahi Lina" <lina+kernel@asahilina.net>,
linux-kernel@vger.kernel.org, rust-for-linux@vger.kernel.org,
iommu@lists.linux.dev, linux-mm@kvack.org
Subject: Re: [PATCH v3] io: add io_pgtable abstraction
Date: Wed, 19 Nov 2025 11:53:16 +0100 [thread overview]
Message-ID: <20251119115316.5de0239a@fedora> (raw)
In-Reply-To: <8A5C6836-992B-477A-A77C-EE0736166552@collabora.com>
On Wed, 12 Nov 2025 09:57:09 -0300
Daniel Almeida <daniel.almeida@collabora.com> wrote:
> > + /// Unmap a range of virtually contiguous pages of the same size.
> > + ///
> > + /// # Safety
> > + ///
> > + /// This page table must contain a mapping at `iova` that consists of exactly `pgcount` pages
> > + /// of size `pgsize`.
>
> Same here. I don’t think the above is necessarily a requirement.
It's not, indeed, the returned size will tell you how much was unmapped
if there's less to unmap, or the region has holes.
next prev parent reply other threads:[~2025-11-19 10:53 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-11-12 10:15 [PATCH v3] io: add io_pgtable abstraction Alice Ryhl
2025-11-12 12:57 ` Daniel Almeida
2025-11-17 16:34 ` Alice Ryhl
2025-11-19 8:59 ` Boris Brezillon
2025-11-19 10:53 ` Boris Brezillon [this message]
2025-11-19 10:56 ` Boris Brezillon
2025-11-28 11:56 ` Robin Murphy
2025-11-28 12:27 ` Alice Ryhl
2025-11-28 16:47 ` Robin Murphy
2025-12-01 9:58 ` Alice Ryhl
2025-12-01 13:55 ` Robin Murphy
2025-11-28 18:02 ` Jason Gunthorpe
2025-12-12 8:44 ` Boris Brezillon
2025-12-12 9:21 ` Jason Gunthorpe
2025-12-12 9:41 ` Boris Brezillon
2025-12-14 0:51 ` Jason Gunthorpe
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