lists  /  announce  owl-users  owl-dev  john-users  john-dev  passwdqc-users  yescrypt  popa3d-users  /  oss-security  kernel-hardening  musl  sabotage  tlsify  passwords  /  crypt-dev  xvendor  /  Bugtraq  Full-Disclosure  linux-kernel  linux-netdev  linux-ext4  linux-hardening  linux-cve-announce  PHC 
Open Source and information security mailing list archives
Hash Suite: Windows password security audit tool. GUI, reports in PDF.
[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]
Date:	Thu, 20 Dec 2012 00:03:29 +0100
From:	Borislav Petkov <>
To:	Jacob Shin <>
Cc:	"H. Peter Anvin" <>, Yinghai Lu <>,
	"H. Peter Anvin" <>,
	"Yu, Fenghua" <>,
	"" <>,
	"" <>,
	"" <>,
	Konrad Rzeszutek Wilk <>,
	Stefano Stabellini <>
Subject: Re: [tip:x86/microcode] x86/microcode_intel_early.c: Early update
 ucode on Intel's CPU

On Wed, Dec 19, 2012 at 04:59:41PM -0600, Jacob Shin wrote:
> I can check but right, they might be used up. But even if we had slots
> available, the memory range that needs to be covered is in large
> enough address and aligned in such a way that you cannot cover it with
> variable range MTRRs.

Actually, if I'm not mistaken, you only need to cover the HT hole with
one MTRR - the rest remains WB. And in order the mask bits to work, we
could make it a little bigger - we waste some memory but that's nothing
in comparison to the MCE.

You might need to talk to hw guys about the feasibility of this deal



Sent from a fat crate under my desk. Formatting is fine.
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to
More majordomo info at
Please read the FAQ at

Powered by blists - more mailing lists