From: Deepak Gupta <debug@rivosinc.com>
To: Chunyan Zhang <zhangchunyan@iscas.ac.cn>
Cc: linux-riscv@lists.infradead.org, linux-fsdevel@vger.kernel.org,
linux-mm@kvack.org, linux-kernel@vger.kernel.org,
Paul Walmsley <paul.walmsley@sifive.com>,
Palmer Dabbelt <palmer@dabbelt.com>,
Albert Ou <aou@eecs.berkeley.edu>,
Alexandre Ghiti <alex@ghiti.fr>,
Ved Shanbhogue <ved@rivosinc.com>,
Alexander Viro <viro@zeniv.linux.org.uk>,
Christian Brauner <brauner@kernel.org>, Jan Kara <jack@suse.cz>,
Andrew Morton <akpm@linux-foundation.org>,
Peter Xu <peterx@redhat.com>, Arnd Bergmann <arnd@arndb.de>,
David Hildenbrand <david@redhat.com>,
Lorenzo Stoakes <lorenzo.stoakes@oracle.com>,
"Liam R . Howlett" <Liam.Howlett@oracle.com>,
Vlastimil Babka <vbabka@suse.cz>, Mike Rapoport <rppt@kernel.org>,
Suren Baghdasaryan <surenb@google.com>,
Michal Hocko <mhocko@suse.com>,
Axel Rasmussen <axelrasmussen@google.com>,
Yuanchu Xie <yuanchu@google.com>,
Chunyan Zhang <zhang.lyra@gmail.com>
Subject: Re: [PATCH V12 4/5] riscv: mm: Add soft-dirty page tracking support
Date: Tue, 16 Sep 2025 14:45:35 -0700 [thread overview]
Message-ID: <aMnaf_3tInUXbuTb@debug.ba.rivosinc.com> (raw)
In-Reply-To: <20250915101343.1449546-5-zhangchunyan@iscas.ac.cn>
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@iscas.ac.cn>
Reviewed-by: Deepak Gupta <debug@rivosinc.com>
>---
WARNING: multiple messages have this Message-ID (diff)
From: Deepak Gupta <debug@rivosinc.com>
To: Chunyan Zhang <zhangchunyan@iscas.ac.cn>
Cc: linux-riscv@lists.infradead.org, linux-fsdevel@vger.kernel.org,
linux-mm@kvack.org, linux-kernel@vger.kernel.org,
Paul Walmsley <paul.walmsley@sifive.com>,
Palmer Dabbelt <palmer@dabbelt.com>,
Albert Ou <aou@eecs.berkeley.edu>,
Alexandre Ghiti <alex@ghiti.fr>,
Ved Shanbhogue <ved@rivosinc.com>,
Alexander Viro <viro@zeniv.linux.org.uk>,
Christian Brauner <brauner@kernel.org>, Jan Kara <jack@suse.cz>,
Andrew Morton <akpm@linux-foundation.org>,
Peter Xu <peterx@redhat.com>, Arnd Bergmann <arnd@arndb.de>,
David Hildenbrand <david@redhat.com>,
Lorenzo Stoakes <lorenzo.stoakes@oracle.com>,
"Liam R . Howlett" <Liam.Howlett@oracle.com>,
Vlastimil Babka <vbabka@suse.cz>, Mike Rapoport <rppt@kernel.org>,
Suren Baghdasaryan <surenb@google.com>,
Michal Hocko <mhocko@suse.com>,
Axel Rasmussen <axelrasmussen@google.com>,
Yuanchu Xie <yuanchu@google.com>,
Chunyan Zhang <zhang.lyra@gmail.com>
Subject: Re: [PATCH V12 4/5] riscv: mm: Add soft-dirty page tracking support
Date: Tue, 16 Sep 2025 14:45:35 -0700 [thread overview]
Message-ID: <aMnaf_3tInUXbuTb@debug.ba.rivosinc.com> (raw)
In-Reply-To: <20250915101343.1449546-5-zhangchunyan@iscas.ac.cn>
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@iscas.ac.cn>
Reviewed-by: Deepak Gupta <debug@rivosinc.com>
>---
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next prev parent reply other threads:[~2025-09-16 21:45 UTC|newest]
Thread overview: 28+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-09-15 10:13 [PATCH V12 0/5] riscv: mm: Add soft-dirty and uffd-wp support Chunyan Zhang
2025-09-15 10:13 ` Chunyan Zhang
2025-09-15 10:13 ` [PATCH V12 1/5] mm: softdirty: Add pgtable_supports_soft_dirty() Chunyan Zhang
2025-09-15 10:13 ` Chunyan Zhang
2025-09-15 13:52 ` David Hildenbrand
2025-09-15 13:52 ` David Hildenbrand
2025-09-15 10:13 ` [PATCH V12 2/5] mm: userfaultfd: Add pgtable_supports_uffd_wp() Chunyan Zhang
2025-09-15 10:13 ` Chunyan Zhang
2025-09-15 13:56 ` David Hildenbrand
2025-09-15 13:56 ` David Hildenbrand
2025-09-15 17:05 ` Conor Dooley
2025-09-15 17:05 ` Conor Dooley
2025-09-16 5:55 ` kernel test robot
2025-09-16 5:55 ` kernel test robot
2025-09-15 10:13 ` [PATCH V12 3/5] riscv: Add RISC-V Svrsw60t59b extension support Chunyan Zhang
2025-09-15 10:13 ` Chunyan Zhang
2025-09-15 17:03 ` Conor Dooley
2025-09-15 17:03 ` Conor Dooley
2025-09-16 21:57 ` Deepak Gupta
2025-09-16 21:57 ` Deepak Gupta
2025-09-15 10:13 ` [PATCH V12 4/5] riscv: mm: Add soft-dirty page tracking support Chunyan Zhang
2025-09-15 10:13 ` Chunyan Zhang
2025-09-16 21:45 ` Deepak Gupta [this message]
2025-09-16 21:45 ` Deepak Gupta
2025-09-15 10:13 ` [PATCH V12 5/5] riscv: mm: Add userfaultfd write-protect support Chunyan Zhang
2025-09-15 10:13 ` Chunyan Zhang
2025-09-15 13:45 ` [PATCH V12 0/5] riscv: mm: Add soft-dirty and uffd-wp support David Hildenbrand
2025-09-15 13:45 ` David Hildenbrand
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