Date: Sat, 09 Jul 2005 22:26:39 +0800
From: David Xu <davidxu@freebsd.org>
To: Joseph Koshy <joseph.koshy@gmail.com>
Cc: freebsd-amd64@freebsd.org
Subject: Re: [patch] restrict amd64_set_{f,g}sbase() to values inside user VA
Message-ID: <42CFDE9F.9050202@freebsd.org>
In-Reply-To: <84dead720507082349d02ece0@mail.gmail.com>
References: <84dead720507082349d02ece0@mail.gmail.com>
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I had already post similar patch some days ago to re@ David Xu Joseph Koshy wrote: >Does anyone have objections to the following patch? > >It restricts the values that can be loaded into the FS.base and >GS.base MSRs for user processes to those inside of user VA >(0..(1<<47) today). > >These values are used as the base addresses for FS- and GS- >relative addressing, when a FS: or GS: segment override >is specified in an instruction. > >
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