From: "H. Peter Anvin" <hpa@zytor.com>
To: Yinghai Lu <yhlu.kernel@gmail.com>
Cc: Robert Hancock <hancockr@shaw.ca>,
Andrew Morton <akpm@linux-foundation.org>,
Thomas Gleixner <tglx@linutronix.de>, Andi Kleen <ak@suse.de>,
rajesh.shah@intel.com, jbarnes@virtuousgeek.org, greg@kroah.com,
patches@x86-64.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH] [9/50] i386: validate against ACPI motherboard resources
Date: Sat, 22 Sep 2007 13:56:11 -0700 [thread overview]
Message-ID: <46F5816B.3070908@zytor.com> (raw)
In-Reply-To: <86802c440709221340h2cbbf423y239f399ab5da815d@mail.gmail.com>
Yinghai Lu wrote:
>>> We all know how correct ACPI tables are. Specifications are nice,
>>> reality tells a different story.
>> MMCONFIG can't be used without ACPI in any case unless we know where the
>> table is using chipset-specific knowledge (i.e. reading the registers
>> directly). Doing that without being told that this area is really
>> intended to be used, via the ACPI table, is dangerous, i.e. we don't
>> necessarily know if the MMCONFIG is broken on the platform in some way
>> we can't detect.
>
> the BIOS get these info from the chipset too.
> for AMD Fam 10h opteron, we can read that MSR for MMCONFIG base.
I think he's saying we don't know a safe place to park the MMCONFIG area
if we don't have this information. However, this applies to *any*
allocation of address space, which we do all the time, so although a
valid argument this has been decided already many times over.
-hpa
next prev parent reply other threads:[~2007-09-22 20:57 UTC|newest]
Thread overview: 105+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-09-21 22:31 [PATCH] [0/50] x86 2.6.24 patches review II Andi Kleen
2007-09-21 22:31 ` [PATCH] [1/50] x86_64: store core id bits in cpuinfo_x8 Andi Kleen
2007-09-21 22:31 ` [PATCH] [2/50] x86_64: use core id bits for apicid_to_node initialization Andi Kleen
2007-09-21 22:32 ` [PATCH] [3/50] x86_64: remove never used apic_mapped Andi Kleen
2007-09-21 22:32 ` [PATCH] [4/50] x86: add cpu codenames for Kconfig.cpu Andi Kleen
2007-09-21 22:45 ` Dave Jones
2007-09-21 23:52 ` Alan Cox
2007-09-22 6:57 ` Sam Ravnborg
2007-09-22 9:46 ` Jan Engelhardt
2007-09-22 14:23 ` Dave Jones
2007-09-22 17:40 ` Randy Dunlap
2007-09-30 10:09 ` Andi Kleen
2007-09-22 17:50 ` Thomas Gleixner
2007-10-01 11:17 ` Andi Kleen
2007-09-21 22:32 ` [PATCH] [5/50] i386: change order in Kconfig.cpu Andi Kleen
2007-09-21 22:32 ` [PATCH] [6/50] i386: clean up oops/bug reports Andi Kleen
2007-09-21 22:41 ` Chuck Ebbert
2007-09-22 9:47 ` Jan Engelhardt
2007-09-22 2:51 ` Killing printk calls for size (Re: [PATCH] [6/50] i386: clean up oops/bug reports) Oleg Verych
2007-09-21 22:32 ` [PATCH] [7/50] x86: expand /proc/interrupts to include missing vectors, v2 Andi Kleen
2007-09-22 3:35 ` possible corrections in the docs (Re: [PATCH] [7/50] x86: expand /proc/interrupts to include missing vectors, v2) Oleg Verych
2007-09-22 3:52 ` Joe Korty
2007-09-21 22:32 ` [PATCH] [8/50] x86_64: remove x86_cpu_to_log_apicid Andi Kleen
2007-09-21 22:32 ` [PATCH] [9/50] i386: validate against ACPI motherboard resources Andi Kleen
2007-09-22 6:49 ` Yinghai Lu
2007-09-22 6:56 ` Yinghai Lu
2007-09-22 16:28 ` Robert Hancock
2007-09-22 18:01 ` Thomas Gleixner
2007-09-22 18:42 ` Robert Hancock
2007-09-22 20:40 ` Yinghai Lu
2007-09-22 20:56 ` H. Peter Anvin [this message]
2007-09-22 21:27 ` Robert Hancock
2007-09-23 1:20 ` Yinghai Lu
2007-09-23 1:34 ` Yinghai Lu
2007-09-22 20:47 ` Yinghai Lu
2007-09-21 22:32 ` [PATCH] [10/50] x86_64: install unstripped copies of compat vdso on disk Andi Kleen
2007-09-21 22:32 ` [PATCH] [11/50] x86_64: Install unstripped copy of 64bit vdso to disk Andi Kleen
2007-09-21 22:32 ` [PATCH] [12/50] x86_64: Untable __init references between IO data Andi Kleen
2007-09-22 5:37 ` [patches] " Yinghai Lu
2007-09-21 22:32 ` [PATCH] [13/50] x86: Fix and reenable CLFLUSH support in change_page_attr() Andi Kleen
2007-09-22 5:47 ` Oleg Verych
2007-10-01 10:59 ` Andi Kleen
2007-09-24 8:23 ` [patches] [PATCH] [13/50] x86: Fix and reenable CLFLUSH support inchange_page_attr() Jan Beulich
2007-10-01 10:38 ` Andi Kleen
2007-09-21 22:32 ` [PATCH] [14/50] x86: Minor code-style cleanups to change_page_attr Andi Kleen
2007-09-21 22:32 ` [PATCH] [15/50] x86_64: Return EINVAL for unknown address in change_page_attr Andi Kleen
2007-09-24 8:32 ` [patches] [PATCH] [15/50] x86_64: Return EINVAL for unknown addressin change_page_attr Jan Beulich
2007-09-21 22:32 ` [PATCH] [16/50] x86: Use macros to modify the PG_arch_1 page flags in change_page_attr Andi Kleen
2007-09-21 22:32 ` [PATCH] [17/50] x86_64: remove STR() macros Andi Kleen
2007-09-21 22:32 ` [PATCH] [18/50] x86_64: Save registers in saved_context during suspend and hibernation Andi Kleen
2007-09-21 22:32 ` [PATCH] [19/50] Experimental: detect if SVM is disabled by BIOS Andi Kleen
2007-09-22 6:59 ` Sam Ravnborg
2007-09-22 9:17 ` Joerg Roedel
2007-10-01 16:47 ` Andi Kleen
2007-10-01 20:12 ` Joerg Roedel
2007-10-01 21:45 ` [patches] " Andi Kleen
2007-10-01 22:13 ` Joerg Roedel
2007-09-22 19:05 ` Thomas Gleixner
2007-09-21 22:32 ` [PATCH] [20/50] x86_64: Fix some broken white space in arch/x86_64/mm/init.c Andi Kleen
2007-09-22 19:17 ` Thomas Gleixner
2007-09-23 1:47 ` Oleg Verych
2007-09-21 22:32 ` [PATCH] [21/50] i386: Misc cpuinit annotations Andi Kleen
2007-09-21 22:32 ` [PATCH] [22/50] " Andi Kleen
2007-09-21 22:32 ` [PATCH] [23/50] x86_64: Implement missing x86_64 function smp_call_function_mask() Andi Kleen
2007-09-21 22:32 ` [PATCH] [24/50] x86_64: Eliminate result signage problem in asm-x86_64/bitops.h Andi Kleen
2007-09-21 22:32 ` [PATCH] [25/50] x86_64: Add parenthesis to IRQ vector macros Andi Kleen
2007-09-21 22:32 ` [PATCH] [26/50] i386: export i386 smp_call_function_mask() to modules Andi Kleen
2007-09-21 22:32 ` [PATCH] [27/50] x86_64: Remove duplicated vsyscall nsec update Andi Kleen
2007-09-21 22:32 ` [PATCH] [28/50] i386: remove stub early_printk.c Andi Kleen
2007-09-21 22:32 ` [PATCH] [29/50] x86: honor _PAGE_PSE bit on page walks Andi Kleen
2007-09-21 22:32 ` [PATCH] [30/50] x86_64: remove some dead code Andi Kleen
2007-09-21 22:32 ` [PATCH] [31/50] x86_64: honor notify_die() returning NOTIFY_STOP Andi Kleen
2007-09-22 19:23 ` Thomas Gleixner
2007-09-21 22:32 ` [PATCH] [32/50] x86: Show last exception from/to register contents Andi Kleen
2007-09-21 22:32 ` [PATCH] [33/50] x86: rename .i assembler includes to .h Andi Kleen
2007-09-21 22:32 ` [PATCH] [34/50] i386: Fix argument signedness warnings Andi Kleen
2007-09-22 5:06 ` Satyam Sharma
2007-09-22 10:01 ` Jan Engelhardt
2007-09-22 17:42 ` Randy Dunlap
2007-09-21 22:32 ` [PATCH] [35/50] i386: Do cpuid_device_create() in CPU_UP_PREPARE instead of CPU_ONLINE Andi Kleen
2007-09-22 19:33 ` Thomas Gleixner
2007-09-23 1:52 ` Akinobu Mita
2007-09-23 7:52 ` Thomas Gleixner
2007-09-21 22:32 ` [PATCH] [36/50] x86: Use raw locks during oopses Andi Kleen
2007-09-21 22:32 ` [PATCH] [37/50] x86_64: Clean up mce= argument parsing slightly Andi Kleen
2007-09-21 22:32 ` [PATCH] [38/50] x86_64: fix off-by-one in find_next_zero_string Andi Kleen
2007-09-21 22:32 ` [PATCH] [39/50] i386: fix 4 bit apicid assumption of mach-default Andi Kleen
2007-09-21 22:32 ` [PATCH] [40/50] i386: Fix section mismatch Andi Kleen
2007-09-21 22:32 ` [PATCH] [41/50] i386: fix section mismatch warning in intel.c Andi Kleen
2007-09-21 22:32 ` [PATCH] [42/50] i386: constify wd_ops Andi Kleen
2007-09-21 22:32 ` [PATCH] [43/50] x86: multi-byte single instruction NOPs Andi Kleen
2007-09-21 22:32 ` [PATCH] [44/50] i386: Introduce "used_vectors" bitmap which can be used to reserve vectors Andi Kleen
2007-09-21 22:32 ` [PATCH] [45/50] x86_64: configure HPET_EMULATE_RTC automatically Andi Kleen
2007-09-21 22:32 ` [PATCH] [46/50] x86: also show non-zero IRQ counts for vectors that currently don't have a handler Andi Kleen
2007-09-21 22:32 ` [PATCH] [47/50] i386: avoid temporarily inconsistent pte-s Andi Kleen
2007-09-21 22:32 ` [PATCH] [48/50] x86_64: return correct error code from child_rip in x86_64 entry.S Andi Kleen
2007-09-21 22:32 ` [PATCH] [49/50] x86_64: Initialize 64bit registers for a.out executables Andi Kleen
2007-09-21 22:32 ` [PATCH] [50/50] x86_64: Remove fpu io port resource Andi Kleen
2007-09-21 23:00 ` Jeff Garzik
2007-10-01 10:40 ` Andi Kleen
2007-10-01 11:30 ` Jeff Garzik
2007-10-01 11:48 ` Andi Kleen
2007-10-01 13:33 ` Jeff Garzik
2007-10-01 14:16 ` Mark Lord
2007-10-02 14:37 ` Alan Cox
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