Message-ID: <52F56A40.60707@zytor.com>
Date: Fri, 07 Feb 2014 15:20:32 -0800
From: "H. Peter Anvin" <hpa@zytor.com>
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To: Dave Young <dyoung@redhat.com>, Vivek Goyal <vgoyal@redhat.com>
CC: "H. Peter Anvin" <hpa@linux.intel.com>, Kees Cook <keescook@chromium.org>,
        Cong Ding <dinggnu@gmail.com>,
        Richard Weinberger <richard.weinberger@gmail.com>,
        Kexec Mailing List <kexec@lists.infradead.org>,
        Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
        Mathias Krause <minipli@googlemail.com>,
        Michael Davidson <md@google.com>,
        Wei Yongjun <yongjun_wei@trendmicro.com.cn>,
        Thomas Gleixner <tglx@linutronix.de>, Yinghai Lu <yinghai@kernel.org>,
        Ingo Molnar <mingo@elte.hu>,
        Linus Torvalds <torvalds@linux-foundation.org>,
        Ingo Molnar <mingo@kernel.org>
Subject: Re: [GIT PULL] x86/kaslr for v3.14
References: <201401201647.s0KGlZdh004167@tazenda.hos.anvin.org> <CAFLxGvxO1MPDDjEh3FU5Gv2-eb6zBJxYtTnKdABDTTpbMxxYAw@mail.gmail.com> <52E5EFAF.3060609@linux.intel.com> <CAFLxGvxJ0A6hZ52RWffkg_zXXScyPn10P4HcKvdAXfE43h32Eg@mail.gmail.com> <52E601DA.7010605@zytor.com> <20140130220708.GP9951@redhat.com> <CAGXu5jKp0j71ucE7uOWRa+gQM1Wzp=_KdByJK4XnACTwiCW4ow@mail.gmail.com> <20140207144914.GA5949@redhat.com> <52F503FD.8080607@linux.intel.com> <20140207162408.GD6967@redhat.com> <20140207231626.GA3840@dhcp-16-126.nay.redhat.com>
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On 02/07/2014 03:16 PM, Dave Young wrote:
> 
> Hi Vivek,
> 
> Chaowang <chaowang@redhat.com> is looking into passing setup_data SETUP_E820_EXT
> instead of using exactmap. Previously Thomas Renninger tried passing them in e820.
> I did not find the old thread, but I remember it's not enough because of the
> 128 entries limitation. 
> 

THERE IS NO SUCH LIMITATION.

Only 128 slots fit in struct boot_params, but additional entries can be
added to the setup_data linked list.

	-hpa

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