AuxXxilium/linux_dsm_epyc7002
1
0
Fork 0
mirror of https://github.com/AuxXxilium/linux_dsm_epyc7002.git synced 2024-12-28 11:18:45 +07:00
Code Issues Actions Packages Projects Releases Wiki Activity
58f892e022
linux_dsm_epyc7002/arch/x86/kernel/acpi
History
Naga Chumbalkar 58f892e022 x86: Print real IOAPIC version for x86-64 
Fix the fact that the IOAPIC version number in the x86_64 code path always
gets assigned to 0, instead of the correct value.

Before the patch: (from "dmesg" output):

 ACPI: IOAPIC (id[0x08] address[0xfec00000] gsi_base[0])
 IOAPIC[0]: apic_id 8, version 0, address 0xfec00000, GSI 0-23     <---

 After the patch:
 ACPI: IOAPIC (id[0x08] address[0xfec00000] gsi_base[0])
 IOAPIC[0]: apic_id 8, version 32, address 0xfec00000, GSI 0-23    <---

History:

io_apic_get_version() was compiled out of the x86_64 code path in the commit
f2c2cca3ac:

Author: Andi Kleen <ak@suse.de>
Date:   Tue Sep 26 10:52:37 2006 +0200

    [PATCH] Remove APIC version/cpu capability mpparse checking/printing

    ACPI went to great trouble to get the APIC version and CPU capabilities
    of different CPUs before passing them to the mpparser. But all
    that data was used was to print it out.  Actually it even faked some data
    based on the boot cpu, not on the actual CPU being booted.

    Remove all this code because it's not needed.

    Cc: len.brown@intel.com

At the time, the IOAPIC version number was deliberately not printed
in the x86_64 code path. However, after the x86 and x86_64 files were
merged, the net result is that the IOAPIC version is printed incorrectly
in the x86_64 code path.

The patch below provides a fix. I have tested it with acpi, and with
acpi=off, and did not see any problems.

Signed-off-by: Naga Chumbalkar <nagananda.chumbalkar@hp.com>
Acked-by: Yinghai Lu <yhlu.kernel@gmail.com>
LKML-Reference: <20090416014230.4885.94926.sendpatchset@localhost.localdomain>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
*************************
2009-06-02 02:03:18 +02:00
..
realmode x86: use _types.h headers in asm where available 2009-02-13 11:35:01 -08:00
boot.c x86: Print real IOAPIC version for x86-64 2009-06-02 02:03:18 +02:00
cstate.c Merge branch 'cpus4096-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip 2009-01-10 06:12:18 -08:00
Makefile kbuild, suspend, x86: fix rebuild of wakeup.bin 2008-05-04 20:04:45 +02:00
processor.c ACPI: Disable the C2C3_FFH access mode HW has no MWAIT support 2008-07-16 23:27:04 +02:00
sleep.c Merge branch 'linus' into x86/apic 2009-02-13 09:44:22 +01:00
sleep.h x86: move suspend wakeup code to C 2008-04-17 17:41:37 +02:00
wakeup_32.S x86: use _types.h headers in asm where available 2009-02-13 11:35:01 -08:00
wakeup_64.S Merge branches 'x86/acpi', 'x86/apic', 'x86/asm', 'x86/cleanups', 'x86/mm', 'x86/signal' and 'x86/urgent'; commit 'v2.6.29-rc6' into x86/core 2009-02-24 21:50:43 +01:00
wakeup_rm.S x86: move suspend wakeup code to C 2008-04-17 17:41:37 +02:00