From: Alex Ghiti <alex@ghiti.fr>
To: Jan Kiszka <jan.kiszka@web.de>,
Paul Walmsley <paul.walmsley@sifive.com>,
Palmer Dabbelt <palmer@dabbelt.com>,
Albert Ou <aou@eecs.berkeley.edu>,
linux-riscv@lists.infradead.org
Cc: linux-kernel@vger.kernel.org
Subject: Re: [PATCH v2 2/3] riscv: End kernel region search in setup_bootmem earlier
Date: Sun, 16 Feb 2020 09:42:17 -0500 [thread overview]
Message-ID: <8f0ddf1f-1ea9-8bde-76a0-ba60788c2a2d@ghiti.fr> (raw)
In-Reply-To: <b11898805c2f9f01b10867a05701aa0fafeaa886.1581767384.git.jan.kiszka@web.de>
Hi Jan,
On 2/15/20 6:49 AM, Jan Kiszka wrote:
> From: Jan Kiszka <jan.kiszka@siemens.com>
>
> No need to look further when that single region is found.
>
> Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
> =2D--
> arch/riscv/mm/init.c | 2 ++
> 1 file changed, 2 insertions(+)
>
> diff --git a/arch/riscv/mm/init.c b/arch/riscv/mm/init.c
> index aec39a56d6cf..a774547e9021 100644
> =2D-- a/arch/riscv/mm/init.c
> +++ b/arch/riscv/mm/init.c
> @@ -160,6 +160,8 @@ void __init setup_bootmem(void)
> if (reg->base + mem_size < end)
> memblock_remove(reg->base + mem_size,
> end - reg->base - mem_size);
> +
> + break;
> }
> }
> BUG_ON(mem_size =3D=3D 0);
> =2D-
> 2.16.4
>
>
I was looking at the test above that determines if the current memblock
contains the kernel:
if (reg->base <= vmlinux_end && vmlinux_end <= end)
Shouldn't it be:
if (reg->base <= vmlinux_start && vmlinux_end <= end)
?
Otherwise, we can indeed stop as soon as we found the region containing
the kernel, so feel free to add:
Reviewed-by: Alexandre Ghiti <alex@ghiti.fr>
Thanks,
Alex
next prev parent reply other threads:[~2020-02-16 14:42 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-02-15 11:49 [PATCH v2 0/3] riscv: mem= support, ioremap exec fix Jan Kiszka
2020-02-15 11:49 ` [PATCH v2 1/3] riscv: Add support for mem= Jan Kiszka
2020-02-15 13:40 ` Anup Patel
2020-02-15 13:44 ` Nikolay Borisov
2020-02-15 14:23 ` Jan Kiszka
2020-02-15 11:49 ` [PATCH v2 2/3] riscv: End kernel region search in setup_bootmem earlier Jan Kiszka
2020-02-16 14:42 ` Alex Ghiti [this message]
2020-02-16 16:06 ` Jan Kiszka
2020-02-16 19:57 ` Alex Ghiti
2020-02-15 11:49 ` [PATCH v2 3/3] riscv: Fix crash when flushing executable ioremap regions Jan Kiszka
2020-02-16 14:41 ` Alex Ghiti
2020-02-16 16:05 ` Jan Kiszka
2020-02-16 19:56 ` Alex Ghiti
2020-02-20 5:49 ` Alex Ghiti
2020-02-20 6:38 ` Jan Kiszka
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