From: Pratyush Anand <panand@redhat.com>
To: Geoff Levand <geoff@infradead.org>
Cc: kexec@lists.infradead.org, kexec@lists.fedoraproject.org
Subject: Re: [PATCH RFC 2/6] purgatory: No need to sha256 update if ptr->len is zero
Date: Sat, 18 Apr 2015 04:56:55 +0530 [thread overview]
Message-ID: <553196BF.4080703@redhat.com> (raw)
In-Reply-To: <1429289920.5479.8.camel@infradead.org>
On Friday 17 April 2015 10:28 PM, Geoff Levand wrote:
> On Thu, 2015-04-16 at 22:17 +0530, Pratyush Anand wrote:
>> If ptr->len is zero we do not need to update sha256.
>
> Looks OK. Did you find this sped things up?
No.. I am working for that..
Speed is good when sha256 is prepared in update_purgatory..just a sec..
while it is 2 min during verification..
one diff is that purgatory is using byte copy in memcpy while kexec had
generic memcpy which has byte/word/page copy features.
But, Most likely speed is low because dcache is disabled.
So I am working to enable d-cache and identity mapped mmu table for
crashdump regions in purgatory.
~Pratyush
>
> Acked-by: Geoff Levand <geoff@infradead.org>
>
>
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next prev parent reply other threads:[~2015-04-17 23:27 UTC|newest]
Thread overview: 38+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-04-16 16:47 [PATCH RFC 0/6] Various fixes for purgatory and ARM64 Pratyush Anand
2015-04-16 16:47 ` [PATCH RFC 1/6] purgatory: Fix memcmp for src address increment Pratyush Anand
2015-04-17 16:55 ` Geoff Levand
2015-04-20 0:25 ` Simon Horman
2015-04-22 11:19 ` Pratyush Anand
2015-04-23 2:23 ` Simon Horman
2015-04-16 16:47 ` [PATCH RFC 2/6] purgatory: No need to sha256 update if ptr->len is zero Pratyush Anand
2015-04-17 16:58 ` Geoff Levand
2015-04-17 23:26 ` Pratyush Anand [this message]
2015-04-20 3:01 ` Baoquan He
2015-04-20 3:18 ` Pratyush Anand
2015-04-16 16:47 ` [PATCH RFC 3/6] arm64: allocate memory for other segments after kernel Pratyush Anand
2015-04-17 16:59 ` Geoff Levand
2015-04-20 3:21 ` Baoquan He
2015-04-21 4:19 ` Pratyush Anand
2015-04-21 10:06 ` AKASHI Takahiro
2015-04-22 6:16 ` AKASHI Takahiro
2015-04-16 16:47 ` [PATCH RFC 4/6] arm64: support reuse-cmdline option Pratyush Anand
2015-04-17 17:02 ` Geoff Levand
2015-04-16 16:47 ` [PATCH RFC 5/6] arm64: Add support for binary image Pratyush Anand
2015-04-17 17:07 ` Geoff Levand
2015-04-17 18:00 ` Geoff Levand
2015-04-17 23:27 ` Pratyush Anand
2015-04-20 7:24 ` Baoquan He
2015-04-21 4:42 ` Pratyush Anand
2015-04-22 2:53 ` Baoquan He
2015-04-22 11:19 ` Pratyush Anand
2015-04-16 16:47 ` [PATCH RFC 6/6] arm64: wait for transmit completion before next character transmission Pratyush Anand
2015-04-17 5:36 ` Minfei Huang
2015-04-17 5:37 ` Pratyush Anand
2015-04-20 2:58 ` Baoquan He
2015-04-20 3:34 ` Pratyush Anand
2015-04-17 17:22 ` Geoff Levand
2015-04-17 23:31 ` Pratyush Anand
2015-04-16 23:54 ` [PATCH RFC 0/6] Various fixes for purgatory and ARM64 Simon Horman
2015-04-17 1:27 ` Dave Young
2015-04-17 2:48 ` Pratyush Anand
2015-04-17 17:27 ` Geoff Levand
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