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From: Dave Young <dyoung@redhat.com>
To: Pavel Tatashin <pasha.tatashin@soleen.com>
Cc: sashal@kernel.org, mark.rutland@arm.com, vladimir.murzin@arm.com,
	corbet@lwn.net, marc.zyngier@arm.com, catalin.marinas@arm.com,
	bhsharma@redhat.com, kexec@lists.infradead.org,
	linux-kernel@vger.kernel.org, jmorris@namei.org,
	linux-mm@kvack.org, james.morse@arm.com, ebiederm@xmission.com,
	matthias.bgg@gmail.com, will@kernel.org,
	linux-arm-kernel@lists.infradead.org
Subject: Re: [PATCH v5 01/17] kexec: quiet down kexec reboot
Date: Wed, 25 Sep 2019 14:04:45 +0800	[thread overview]
Message-ID: <20190925060445.GA30921@dhcp-128-65.nay.redhat.com> (raw)
In-Reply-To: <20190923203427.294286-2-pasha.tatashin@soleen.com>

On 09/23/19 at 04:34pm, Pavel Tatashin wrote:
> Here is a regular kexec command sequence and output:
> =====
> $ kexec --reuse-cmdline -i --load Image
> $ kexec -e
> [  161.342002] kexec_core: Starting new kernel
> 
> Welcome to Buildroot
> buildroot login:
> =====
> 
> Even when "quiet" kernel parameter is specified, "kexec_core: Starting
> new kernel" is printed.
> 
> This message has  KERN_EMERG level, but there is no emergency, it is a
> normal kexec operation, so quiet it down to appropriate KERN_NOTICE.
> 
> Machines that have slow console baud rate benefit from less output.
> 
> Signed-off-by: Pavel Tatashin <pasha.tatashin@soleen.com>
> Reviewed-by: Simon Horman <horms@verge.net.au>
> ---
>  kernel/kexec_core.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/kernel/kexec_core.c b/kernel/kexec_core.c
> index d5870723b8ad..2c5b72863b7b 100644
> --- a/kernel/kexec_core.c
> +++ b/kernel/kexec_core.c
> @@ -1169,7 +1169,7 @@ int kernel_kexec(void)
>  		 * CPU hotplug again; so re-enable it here.
>  		 */
>  		cpu_hotplug_enable();
> -		pr_emerg("Starting new kernel\n");
> +		pr_notice("Starting new kernel\n");
>  		machine_shutdown();
>  	}
>  

Acked-by: Dave Young <dyoung@redhat.com>

Thanks
Dave

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  reply	other threads:[~2019-09-25  6:05 UTC|newest]

Thread overview: 22+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-09-23 20:34 [PATCH v5 00/17] arm64: MMU enabled kexec relocation Pavel Tatashin
2019-09-23 20:34 ` [PATCH v5 01/17] kexec: quiet down kexec reboot Pavel Tatashin
2019-09-25  6:04   ` Dave Young [this message]
2019-09-25 15:33     ` Pavel Tatashin
2019-09-23 20:34 ` [PATCH v5 02/17] arm64: hibernate: pass the allocated pgdp to ttbr0 Pavel Tatashin
2019-09-23 20:34 ` [PATCH v5 03/17] arm64: hibernate: check pgd table allocation Pavel Tatashin
2019-09-23 20:34 ` [PATCH v5 04/17] arm64: hibernate: use get_safe_page directly Pavel Tatashin
2019-09-23 20:34 ` [PATCH v5 05/17] arm64: hibernate: remove gotos as they are not needed Pavel Tatashin
2019-09-23 20:34 ` [PATCH v5 06/17] arm64: hibernate: rename dst to page in create_safe_exec_page Pavel Tatashin
2019-09-23 20:34 ` [PATCH v5 07/17] arm64: hibernate: add PUD_SECT_RDONLY Pavel Tatashin
2019-09-23 20:34 ` [PATCH v5 08/17] arm64: hibernate: add trans_pgd public functions Pavel Tatashin
2019-09-23 20:34 ` [PATCH v5 09/17] arm64: hibernate: move page handling function to new trans_pgd.c Pavel Tatashin
2019-09-23 20:34 ` [PATCH v5 10/17] arm64: trans_pgd: make trans_pgd_map_page generic Pavel Tatashin
2019-09-23 20:34 ` [PATCH v5 11/17] arm64: trans_pgd: pass allocator trans_pgd_create_copy Pavel Tatashin
2019-09-23 20:34 ` [PATCH v5 12/17] arm64: trans_pgd: pass NULL instead of init_mm to *_populate functions Pavel Tatashin
2019-09-23 20:34 ` [PATCH v5 13/17] kexec: add machine_kexec_post_load() Pavel Tatashin
2019-09-25  6:05   ` Dave Young
2019-09-25 15:33     ` Pavel Tatashin
2019-09-23 20:34 ` [PATCH v5 14/17] arm64: kexec: move relocation function setup and clean up Pavel Tatashin
2019-09-23 20:34 ` [PATCH v5 15/17] arm64: kexec: add expandable argument to relocation function Pavel Tatashin
2019-09-23 20:34 ` [PATCH v5 16/17] arm64: kexec: configure trans_pgd page table for kexec Pavel Tatashin
2019-09-23 20:34 ` [PATCH v5 17/17] arm64: kexec: enable MMU during kexec relocation Pavel Tatashin

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