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From: "Rodney W. Grimes" <freebsd@pdx.rh.CN85.dnsmgr.net>
Message-Id: <201808141528.w7EFS8db042920@pdx.rh.CN85.dnsmgr.net>
Subject: Re: svn commit: r337758 - head/sys/x86/x86
In-Reply-To: <201808141450.w7EEo78r029739@repo.freebsd.org>
To: Mark Johnston <markj@freebsd.org>
Date: Tue, 14 Aug 2018 08:28:08 -0700 (PDT)
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> Author: markj
> Date: Tue Aug 14 14:50:06 2018
> New Revision: 337758
> URL: https://svnweb.freebsd.org/changeset/base/337758
>
> Log:
> Explain why we aren't using memcpy().
>
> Reported by: jmg
> X-MFC with: r337715
> Sponsored by: The FreeBSD Foundation
>
> Modified:
> head/sys/x86/x86/ucode.c
>
> Modified: head/sys/x86/x86/ucode.c
> ==============================================================================
> --- head/sys/x86/x86/ucode.c Tue Aug 14 14:19:57 2018 (r337757)
> +++ head/sys/x86/x86/ucode.c Tue Aug 14 14:50:06 2018 (r337758)
> @@ -344,6 +344,7 @@ ucode_load_bsp(uintptr_t free)
> match = loader->match(fileaddr, &len);
> if (match != NULL) {
> addr = map_ucode(free, len);
> + /* We can't use memcpy() before ifunc resolution. */
NVM my previous email, and thank you.
> for (i = 0; i < len; i++)
> addr[i] = match[i];
> match = addr;
--
Rod Grimes rgrimes@freebsd.org