linux-kernel - Re: [PATCH 0/8] x86, acpi: Move acpi_initrd

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Date:	Fri, 23 Aug 2013 21:41:05 -0500
From:	Russ Anderson <rja@....com>
To:	Yinghai Lu <yinghai@...nel.org>
Cc:	"H. Peter Anvin" <hpa@...or.com>,
	Zhang Yanfei <zhangyanfei.yes@...il.com>,
	Toshi Kani <toshi.kani@...com>, Tejun Heo <tj@...nel.org>,
	Tang Chen <tangchen@...fujitsu.com>,
	Konrad Rzeszutek Wilk <konrad.wilk@...cle.com>,
	Bob Moore <robert.moore@...el.com>,
	Lv Zheng <lv.zheng@...el.com>,
	"Rafael J. Wysocki" <rjw@...k.pl>, Ingo Molnar <mingo@...e.hu>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Thomas Renninger <trenn@...e.de>,
	Yasuaki Ishimatsu <isimatu.yasuaki@...fujitsu.com>,
	Mel Gorman <mgorman@...e.de>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 0/8] x86, acpi: Move acpi_initrd_override() earlier.

On Fri, Aug 23, 2013 at 01:08:56PM -0700, Yinghai Lu wrote:
> On Fri, Aug 23, 2013 at 11:25 AM, H. Peter Anvin <hpa@...or.com> wrote:
> >
> > BRK makes sense as long as you can set a sane O(1) size limit.
> >
> >>
> >>put the acpi override table in BRK, we still need ok from HPA.
> >>I have impression that he did not like it, so want to confirm from him.
> 
> on 8 sockets system:
> -rw-r--r-- 1 root root   3532 Aug 22 10:26 APIC.dat
> -rw-r--r-- 1 root root     48 Aug 22 10:26 BDAT.dat
> -rw-r--r-- 1 root root    824 Aug 22 10:26 DMAR.dat
> -rw-r--r-- 1 root root  83509 Aug 22 10:26 DSDT.dat
> -rw-r--r-- 1 root root    244 Aug 22 10:26 FACP.dat
> -rw-r--r-- 1 root root     64 Aug 22 10:26 FACS.dat
> -rw-r--r-- 1 root root     68 Aug 22 10:26 FPDT.dat
> -rw-r--r-- 1 root root     56 Aug 22 10:26 HPET.dat
> -rw-r--r-- 1 root root    304 Aug 22 10:26 MCEJ.dat
> -rw-r--r-- 1 root root     60 Aug 22 10:26 MCFG.dat
> -rw-r--r-- 1 root root   6712 Aug 22 10:26 MPST.dat
> -rw-r--r-- 1 root root    232 Aug 22 10:26 MSCT.dat
> -rw-r--r-- 1 root root    172 Aug 22 10:26 PCCT.dat
> -rw-r--r-- 1 root root     96 Aug 22 10:26 PMCT.dat
> -rw-r--r-- 1 root root     48 Aug 22 10:26 RASF.dat
> -rw-r--r-- 1 root root    108 Aug 22 10:26 SLIT.dat
> -rw-r--r-- 1 root root     80 Aug 22 10:26 SPCR.dat
> -rw-r--r-- 1 root root     65 Aug 22 10:26 SPMI.dat
> -rw-r--r-- 1 root root   6448 Aug 22 10:26 SRAT.dat
> -rw-r--r-- 1 root root    100 Aug 22 10:26 SSDT1.dat
> -rw-r--r-- 1 root root 283527 Aug 22 10:26 SSDT2.dat
> -rw-r--r-- 1 root root     66 Aug 22 10:26 UEFI.dat
> -rw-r--r-- 1 root root     64 Aug 22 10:26 WDDT.dat
> 
> assume for 32sockets will have four times bigger with DSDT and SSDT.
> (with more pci and cpus)
> 
> So we can not have O(1) the size.
> 
> Russ, What is ACPI table size on your big machine?

This is from a 255 socket, 4080 cpu, 15TB system.

-------------------------------------------------------
-rw-r--r-- 1 root root   65392 Aug 23 21:23 apic.dat
-rw-r--r-- 1 root root     316 Aug 23 21:23 dmar.dat
-rw-r--r-- 1 root root 8309249 Aug 23 21:23 dsdt.dat
-rw-r--r-- 1 root root     244 Aug 23 21:23 facp.dat
-rw-r--r-- 1 root root      64 Aug 23 21:23 facs.dat
-rw-r--r-- 1 root root      56 Aug 23 21:23 hpet.dat
-rw-r--r-- 1 root root    4172 Aug 23 21:23 mcfg.dat
-rw-r--r-- 1 root root      36 Aug 23 21:23 rsdp.dat
-rw-r--r-- 1 root root      80 Aug 23 21:23 rsdt.dat
-rw-r--r-- 1 root root   65069 Aug 23 21:23 slit.dat
-rw-r--r-- 1 root root      80 Aug 23 21:23 spcr.dat
-rw-r--r-- 1 root root  108168 Aug 23 21:23 srat.dat
-rw-r--r-- 1 root root   21330 Aug 23 21:23 ssdt.dat
-rw-r--r-- 1 root root      92 Aug 23 21:23 uefi1.dat
-rw-r--r-- 1 root root     298 Aug 23 21:23 uefi.dat
-rw-r--r-- 1 root root     124 Aug 23 21:23 xsdt.dat
-------------------------------------------------------

-- 
Russ Anderson, OS RAS/Partitioning Project Lead  
SGI - Silicon Graphics Inc          rja@....com
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