From: Stafford Horne <shorne@gmail.com>
To: LKML <linux-kernel@vger.kernel.org>
Cc: Jonas Bonn <jonas@southpole.se>,
Stefan Kristiansson <stefan.kristiansson@saunalahti.fi>,
Mike Rapoport <rppt@kernel.org>,
Arvind Sankar <nivedita@alum.mit.edu>,
Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
Andrew Morton <akpm@linux-foundation.org>,
openrisc@lists.librecores.org
Subject: Re: [PATCH v2 1/3] openrisc: Reserve memblock for initrd
Date: Sat, 5 Sep 2020 22:25:34 +0900 [thread overview]
Message-ID: <20200905132534.GH3562056@lianli.shorne-pla.net> (raw)
In-Reply-To: <20200905131935.972386-2-shorne@gmail.com>
On Sat, Sep 05, 2020 at 10:19:33PM +0900, Stafford Horne wrote:
> Recently OpenRISC added support for external initrd images, but I found
> some instability when using larger buildroot initrd images. It turned
> out that I forgot to reserve the memblock space for the initrd image.
>
> This patch fixes the instability issue by reserving memblock space.
>
> Fixes: ff6c923dbec3 ("openrisc: Add support for external initrd images")
> Signed-off-by: Stafford Horne <shorne@gmail.com>
> ---
Forgot to mention:
Changes since v1:
- Updated to use separate variables as suggested by Mike.
> arch/openrisc/kernel/setup.c | 10 ++++++++++
> 1 file changed, 10 insertions(+)
>
> diff --git a/arch/openrisc/kernel/setup.c b/arch/openrisc/kernel/setup.c
> index b18e775f8be3..13c87f1f872b 100644
> --- a/arch/openrisc/kernel/setup.c
> +++ b/arch/openrisc/kernel/setup.c
> @@ -80,6 +80,16 @@ static void __init setup_memory(void)
> */
> memblock_reserve(__pa(_stext), _end - _stext);
>
> +#ifdef CONFIG_BLK_DEV_INITRD
> + /* Then reserve the initrd, if any */
> + if (initrd_start && (initrd_end > initrd_start)) {
> + unsigned long aligned_start = ALIGN_DOWN(initrd_start, PAGE_SIZE);
> + unsigned long aligned_end = ALIGN(initrd_end, PAGE_SIZE);
> +
> + memblock_reserve(__pa(aligned_start), aligned_end - aligned_start);
> + }
> +#endif /* CONFIG_BLK_DEV_INITRD */
> +
> early_init_fdt_reserve_self();
> early_init_fdt_scan_reserved_mem();
>
> --
> 2.26.2
>
next prev parent reply other threads:[~2020-09-05 13:25 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-09-05 13:19 [PATCH v2 0/3] OpenRISC fixes for 5.9 Stafford Horne
2020-09-05 13:19 ` [PATCH v2 1/3] openrisc: Reserve memblock for initrd Stafford Horne
2020-09-05 13:25 ` Stafford Horne [this message]
2020-09-06 6:15 ` Mike Rapoport
2020-09-05 13:19 ` [PATCH v2 2/3] openrisc: Fix cache API compile issue when not inlining Stafford Horne
2020-09-05 13:19 ` [PATCH v2 3/3] openrisc: Fix issue with get_user for 64-bit values Stafford Horne
2020-09-05 13:57 ` Luc Van Oostenryck
2020-09-05 21:34 ` Stafford Horne
2020-09-06 0:22 ` [OpenRISC] " Luc Van Oostenryck
2020-09-06 21:00 ` Stafford Horne
2020-09-05 13:24 ` [PATCH v2 0/3] OpenRISC fixes for 5.9 Stafford Horne
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