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From: =?utf-8?B?QmrDtnJuIFTDtnBlbA==?= <bjorn@kernel.org>
To: Alexandre Ghiti <alexghiti@rivosinc.com>, Albert Ou
 <aou@eecs.berkeley.edu>, David Hildenbrand <david@redhat.com>, Palmer
 Dabbelt <palmer@dabbelt.com>, Paul Walmsley <paul.walmsley@sifive.com>,
 linux-riscv@lists.infradead.org
Cc: =?utf-8?B?QmrDtnJuIFTDtnBlbA==?= <bjorn@rivosinc.com>, Andrew Bresticker
 <abrestic@rivosinc.com>, Chethan Seshadri
 <Chethan.Seshadri@catalinasystems.io>, Lorenzo Stoakes
 <lstoakes@gmail.com>, Oscar Salvador <osalvador@suse.de>, Santosh Mamila
 <santosh.mamila@catalinasystems.io>, Sivakumar Munnangi
 <siva.munnangi@catalinasystems.io>, Sunil V L <sunilvl@ventanamicro.com>,
 linux-kernel@vger.kernel.org, linux-mm@kvack.org,
 virtualization@lists.linux-foundation.org
Subject: Re: [PATCH v2 8/8] riscv: mm: Add support for ZONE_DEVICE
In-Reply-To: <20240514140446.538622-9-bjorn@kernel.org>
References: <20240514140446.538622-1-bjorn@kernel.org>
 <20240514140446.538622-9-bjorn@kernel.org>
Date: Wed, 15 May 2024 09:03:02 +0200
Message-ID: <87pltntv4p.fsf@all.your.base.are.belong.to.us>
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Bj=C3=B6rn T=C3=B6pel <bjorn@kernel.org> writes:

> From: Bj=C3=B6rn T=C3=B6pel <bjorn@rivosinc.com>
>
> ZONE_DEVICE pages need DEVMAP PTEs support to function
> (ARCH_HAS_PTE_DEVMAP). Claim another RSW (reserved for software) bit
> in the PTE for DEVMAP mark, add the corresponding helpers, and enable
> ARCH_HAS_PTE_DEVMAP for riscv64.

..and this patch has rv32 build issues. Will fix as well.