From: "Arnd Bergmann" <arnd@arndb.de>
To: "Huacai Chen" <chenhuacai@loongson.cn>,
"Huacai Chen" <chenhuacai@kernel.org>
Cc: loongarch@lists.linux.dev,
Linux-Arch <linux-arch@vger.kernel.org>,
"Xuefeng Li" <lixuefeng@loongson.cn>, guoren <guoren@kernel.org>,
"WANG Xuerui" <kernel@xen0n.name>,
"Jiaxun Yang" <jiaxun.yang@flygoat.com>,
linux-kernel@vger.kernel.org
Subject: Re: [PATCH V2 12/14] LoongArch: Adjust VDSO/VSYSCALL for 32BIT/64BIT
Date: Tue, 18 Nov 2025 14:41:40 +0100 [thread overview]
Message-ID: <4155a60c-81da-4c23-8a66-9a748b3383e4@app.fastmail.com> (raw)
In-Reply-To: <20251118112728.571869-13-chenhuacai@loongson.cn>
On Tue, Nov 18, 2025, at 12:27, Huacai Chen wrote:
> Adjust VDSO/VSYSCALL because read_cpu_id() for 32BIT/64BIT are
> different, and LoongArch32 doesn't support GENERIC_GETTIMEOFDAY now.
>
> Signed-off-by: Jiaxun Yang <jiaxun.yang@flygoat.com>
> Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>
Are you planning to add vdso_clock_gettime() later, or is the
architecture missing hardware access to the timer register
on loongarch32?
It would be good to add some comments here to ensure this is
done correctly if someone adds the vdso32 support later:
There should be clock_gettime32 support, but not the old
clock_gettime(), clock_getres() or time().
Arnd
next prev parent reply other threads:[~2025-11-18 13:42 UTC|newest]
Thread overview: 37+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-11-18 11:27 [PATCH V2 00/14] LoongArch: Add basic LoongArch32 support Huacai Chen
2025-11-18 11:27 ` [PATCH V2 01/14] LoongArch: Add atomic operations for 32BIT/64BIT Huacai Chen
2025-11-18 11:27 ` [PATCH V2 02/14] LoongArch: Add adaptive CSR accessors " Huacai Chen
2025-11-18 11:27 ` [PATCH V2 03/14] LoongArch: Adjust common macro definitions " Huacai Chen
2025-11-18 11:27 ` [PATCH V2 04/14] LoongArch: Adjust boot & setup " Huacai Chen
2025-11-18 17:09 ` Yao Zi
2025-11-19 4:28 ` Huacai Chen
2025-11-19 6:03 ` Jiaxun Yang
2025-11-19 7:51 ` Huacai Chen
2025-11-19 14:28 ` Yao Zi
2025-11-19 14:43 ` Huacai Chen
2025-11-18 11:27 ` [PATCH V2 05/14] LoongArch: Adjust memory management " Huacai Chen
2025-11-18 11:27 ` [PATCH V2 06/14] LoongArch: Adjust process " Huacai Chen
2025-11-18 11:27 ` [PATCH V2 07/14] LoongArch: Adjust time routines " Huacai Chen
2025-11-18 11:27 ` [PATCH V2 08/14] LoongArch: Adjust module loader " Huacai Chen
2025-11-18 11:27 ` [PATCH V2 09/14] LoongArch: Adjust system call " Huacai Chen
2025-11-20 10:40 ` WANG Xuerui
2025-11-20 12:05 ` Huacai Chen
2025-11-18 11:27 ` [PATCH V2 10/14] LoongArch: Adjust user accessors " Huacai Chen
2025-11-18 11:27 ` [PATCH V2 11/14] LoongArch: Adjust misc routines " Huacai Chen
2025-11-20 10:45 ` WANG Xuerui
2025-11-20 12:04 ` Huacai Chen
2025-11-18 11:27 ` [PATCH V2 12/14] LoongArch: Adjust VDSO/VSYSCALL " Huacai Chen
2025-11-18 13:41 ` Arnd Bergmann [this message]
2025-11-18 14:34 ` Huacai Chen
2025-11-18 11:27 ` [PATCH V2 13/14] LoongArch: Adjust default config files " Huacai Chen
2025-11-18 13:45 ` Arnd Bergmann
2025-11-19 8:01 ` Huacai Chen
2025-11-19 8:13 ` Arnd Bergmann
2025-11-19 14:13 ` Huacai Chen
2025-11-20 8:11 ` Thomas Weißschuh
2025-11-20 8:16 ` Huacai Chen
2025-11-20 8:26 ` Thomas Weißschuh
2025-11-20 8:54 ` Huacai Chen
2025-11-18 11:27 ` [PATCH V2 14/14] LoongArch: Adjust build infrastructure " Huacai Chen
2025-11-18 14:07 ` [PATCH V2 00/14] LoongArch: Add basic LoongArch32 support Arnd Bergmann
2025-11-18 14:30 ` Huacai Chen
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