linux-kernel - Re: [PATCH V12 4/5] riscv: mm: Add soft-dirty page tracking support

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <aMnaf_3tInUXbuTb@debug.ba.rivosinc.com>
Date: Tue, 16 Sep 2025 14:45:35 -0700
From: Deepak Gupta <debug@...osinc.com>
To: Chunyan Zhang <zhangchunyan@...as.ac.cn>
Cc: linux-riscv@...ts.infradead.org, linux-fsdevel@...r.kernel.org,
	linux-mm@...ck.org, linux-kernel@...r.kernel.org,
	Paul Walmsley <paul.walmsley@...ive.com>,
	Palmer Dabbelt <palmer@...belt.com>,
	Albert Ou <aou@...s.berkeley.edu>, Alexandre Ghiti <alex@...ti.fr>,
	Ved Shanbhogue <ved@...osinc.com>,
	Alexander Viro <viro@...iv.linux.org.uk>,
	Christian Brauner <brauner@...nel.org>, Jan Kara <jack@...e.cz>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Peter Xu <peterx@...hat.com>, Arnd Bergmann <arnd@...db.de>,
	David Hildenbrand <david@...hat.com>,
	Lorenzo Stoakes <lorenzo.stoakes@...cle.com>,
	"Liam R . Howlett" <Liam.Howlett@...cle.com>,
	Vlastimil Babka <vbabka@...e.cz>, Mike Rapoport <rppt@...nel.org>,
	Suren Baghdasaryan <surenb@...gle.com>,
	Michal Hocko <mhocko@...e.com>,
	Axel Rasmussen <axelrasmussen@...gle.com>,
	Yuanchu Xie <yuanchu@...gle.com>,
	Chunyan Zhang <zhang.lyra@...il.com>
Subject: Re: [PATCH V12 4/5] riscv: mm: Add soft-dirty page tracking support

On Mon, Sep 15, 2025 at 06:13:42PM +0800, Chunyan Zhang wrote:
>The Svrsw60t59b extension allows to free the PTE reserved bits 60 and 59
>for software, this patch uses bit 59 for soft-dirty.
>
>To add swap PTE soft-dirty tracking, we borrow bit 3 which is available
>for swap PTEs on RISC-V systems.
>
>Signed-off-by: Chunyan Zhang <zhangchunyan@...as.ac.cn>

Reviewed-by: Deepak Gupta <debug@...osinc.com>
>---