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From: "H. Peter Anvin" <hpa@zytor.com>
To: Dave Young <dyoung@redhat.com>, Vivek Goyal <vgoyal@redhat.com>
Cc: Kees Cook <keescook@chromium.org>, Cong Ding <dinggnu@gmail.com>,
	Richard Weinberger <richard.weinberger@gmail.com>,
	Linus Torvalds <torvalds@linux-foundation.org>,
	Ingo Molnar <mingo@elte.hu>,
	Kexec Mailing List <kexec@lists.infradead.org>,
	Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
	Ingo Molnar <mingo@kernel.org>, Michael Davidson <md@google.com>,
	Wei Yongjun <yongjun_wei@trendmicro.com.cn>,
	Thomas Gleixner <tglx@linutronix.de>,
	"H. Peter Anvin" <hpa@linux.intel.com>,
	Yinghai Lu <yinghai@kernel.org>,
	Mathias Krause <minipli@googlemail.com>
Subject: Re: [GIT PULL] x86/kaslr for v3.14
Date: Fri, 07 Feb 2014 15:20:32 -0800	[thread overview]
Message-ID: <52F56A40.60707@zytor.com> (raw)
In-Reply-To: <20140207231626.GA3840@dhcp-16-126.nay.redhat.com>

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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WARNING: multiple messages have this Message-ID (diff)
From: "H. Peter Anvin" <hpa@zytor.com>
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
Date: Fri, 07 Feb 2014 15:20:32 -0800	[thread overview]
Message-ID: <52F56A40.60707@zytor.com> (raw)
In-Reply-To: <20140207231626.GA3840@dhcp-16-126.nay.redhat.com>

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


  reply	other threads:[~2014-02-07 23:21 UTC|newest]

Thread overview: 75+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2014-01-20 16:47 [GIT PULL] x86/kaslr for v3.14 H. Peter Anvin
2014-01-20 22:54 ` Linus Torvalds
2014-01-20 23:00   ` H. Peter Anvin
2014-01-20 23:12   ` Linus Torvalds
2014-01-20 23:13     ` H. Peter Anvin
2014-01-21  9:00       ` Peter Zijlstra
2014-01-21 14:20         ` H. Peter Anvin
2014-01-21 14:39           ` Ingo Molnar
2014-01-21 14:51             ` H. Peter Anvin
2014-01-21 14:56               ` Ingo Molnar
2014-01-21 18:37           ` Kees Cook
2014-01-21 10:27     ` Ingo Molnar
2014-01-21 13:55       ` H. Peter Anvin
2014-01-21 14:03         ` Ingo Molnar
2014-01-21 14:05           ` H. Peter Anvin
2014-01-21 14:14             ` Ingo Molnar
2014-01-21 14:17               ` H. Peter Anvin
2014-01-21  5:18   ` Kees Cook
2014-01-23  9:39   ` Pavel Machek
2014-01-26 10:16 ` Richard Weinberger
2014-01-27  5:33   ` H. Peter Anvin
2014-01-27  6:49     ` Richard Weinberger
2014-01-27  6:51       ` H. Peter Anvin
2014-01-27  7:38         ` Ingo Molnar
2014-01-27  7:43           ` Ingo Molnar
2014-01-27  7:59           ` Richard Weinberger
2014-01-30 22:07         ` Vivek Goyal
2014-01-31 16:57           ` Kees Cook
2014-02-07 14:49             ` Vivek Goyal
2014-02-07 16:04               ` H. Peter Anvin
2014-02-07 16:24                 ` Vivek Goyal
2014-02-07 16:24                   ` Vivek Goyal
2014-02-07 23:16                   ` Dave Young
2014-02-07 23:16                     ` Dave Young
2014-02-07 23:20                     ` H. Peter Anvin [this message]
2014-02-07 23:20                       ` H. Peter Anvin
2014-02-07 23:28                       ` Dave Young
2014-02-07 23:28                         ` Dave Young
2014-02-07 19:07               ` H. Peter Anvin
2014-02-07 19:44                 ` Kees Cook
2014-02-07 19:44                   ` Kees Cook
2014-01-27  6:52       ` H. Peter Anvin
2014-01-27  7:34         ` Richard Weinberger
2014-01-27 17:05       ` Kees Cook
2014-01-27 17:20         ` Richard Weinberger
2014-01-27 17:24           ` Kees Cook
2014-01-28  6:28             ` Ingo Molnar
2014-01-28  8:25               ` Richard Weinberger
2014-01-28 15:55                 ` H. Peter Anvin
2014-01-28 16:25                   ` Richard Weinberger
2014-01-28 16:30                     ` H. Peter Anvin
2014-01-28 16:51                       ` Linus Torvalds
2014-01-28 17:05                         ` Ingo Molnar
2014-01-28 17:12                           ` Linus Torvalds
2014-01-28 17:24                             ` Richard Weinberger
2014-01-28 17:35                               ` Linus Torvalds
2014-01-28 17:52                                 ` Richard Weinberger
2014-01-28 17:56                                   ` Linus Torvalds
2014-01-28 18:54                                     ` Richard Weinberger
2014-01-28 19:48                             ` Ingo Molnar
2014-01-28 20:07                               ` Linus Torvalds
2014-01-28 20:15                                 ` Borislav Petkov
2014-01-28 20:25                                   ` Linus Torvalds
2014-01-28 20:28                                     ` Richard Weinberger
2014-01-28 20:38                                       ` H. Peter Anvin
2014-01-29  8:25                                         ` Ingo Molnar
2014-01-29 10:40                                           ` Borislav Petkov
2014-01-28 20:49                                     ` Borislav Petkov
2014-01-28 23:37                                       ` Borislav Petkov
2014-01-28 21:08                                     ` Dave Jones
2014-01-29  6:36                                       ` Mike Galbraith
2014-01-29  8:11                                 ` Ingo Molnar
2014-01-29  8:27                                   ` Mathias Krause
2014-01-30  9:23                                     ` Ingo Molnar
2014-01-30 18:15                                       ` Linus Torvalds

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