Re: [PATCH 0/8] x86, acpi: Move acpi_initrd_override() earlier.

Russ Anderson
2013-08-23T20:30:55Z

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@zytor.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 256 socket 32TB system.

Reserving 256MB of memory at 66973408MB for crashkernel (System RAM: 32501719MB)
ACPI: RSDP 000000007ef3d014 00024 (v02 INTEL )
ACPI: XSDT 000000007ef3d120 0007C (v01 INTEL TIANO 00000000 01000013)
ACPI: FACP 000000007ef3a000 000F4 (v04 INTEL TIANO 00000000 MSFT 01000013)
ACPI: DSDT 000000007e6c3000 7F493E (v02 SGI2 UVX 00000002 MSFT 01000013)
ACPI: FACS 000000007d147000 00040
ACPI: UEFI 000000007ef3c000 0012A (v01 INTEL RstScuO 00000000 00000000)
ACPI: UEFI 000000007ef3b000 0005C (v01 INTEL RstScuV 00000000 00000000)
ACPI: HPET 000000007ef39000 00038 (v01 INTEL TIANO 00000001 MSFT 01000013)
ACPI: SSDT 000000007ef33000 05352 (v02 INTEL ROSECITY 00000003 INTL 20070508)
ACPI: SLIT 000000007ef10000 1002C (v01 SGI2 UVX 00000002 MSFT 00000001)
ACPI: APIC 000000007eeee000 10070 (v03 SGI2 UVX 00000002 MSFT 00000001)
ACPI: SRAT 000000007eeb8000 1A830 (v03 SGI2 UVX 00000002 MSFT 00000001)
ACPI: MCFG 000000007d6d4000 0105C (v01 SGI2 UVX 00000002 MSFT 00000001)
ACPI: SPCR 000000007e6c2000 00050 (v01 00000000 00000000)
ACPI: DMAR 000000007d6d3000 0013C (v01 INTEL TIANO 00000001 MSFT 01000013)

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