On Mon, 16 Apr 2012, Avi Kivity wrote:
On 04/16/2012 01:30 PM, Roedel, Joerg wrote:
On Mon, Apr 16, 2012 at 12:25:37PM +0200, Jan Kiszka wrote:
On 2012-04-15 11:44, Avi Kivity wrote:
Jan, Joerg, was an AMD erratum published for the bug?
It wasn't an erratum but a documented feature limitation in the AMD
architecture that was simply ignored by the old code.
Right. But there is an erratum on K8 (only) which Kevin ran into. It is
documented as Erratum 701 and the bug is that no EXITINTINFO is stored
on a task-switch intercept on K8.
Ah, so this could affect Gerhard. Gerhard, what's your cpu
family/model/stepping from /proc/cpuinfo?
Only CPU 0 of 3:
processor : 0
vendor_id : AuthenticAMD
cpu family : 16
model : 4
model name : AMD Phenom(tm) II X4 940 Processor
stepping : 2
microcode : 0x1000086
cpu MHz : 2999.912
cache size : 512 KB
physical id : 0
siblings : 4
core id : 0
cpu cores : 4
apicid : 0
initial apicid : 0
fpu : yes
fpu_exception : yes
cpuid level : 5
wp : yes
flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush mmx fxsr sse sse2 ht syscall nx mmxext fxsr_opt pdpe1gb rdtscp lm 3dnowext 3dnow constant_tsc rep_good nopl nonstop_tsc extd_apicid pni monitor cx16 popcnt lahf_lm cmp_legacy svm extapic cr8_legacy abm sse4a misalignsse 3dnowprefetch osvw ibs skinit wdt hw_pstate npt lbrv svm_lock nrip_save
bogomips : 5999.82
TLB size : 1024 4K pages
clflush size : 64
cache_alignment : 64
address sizes : 48 bits physical, 48 bits virtual
power management: ts ttp tm stc 100mhzsteps hwpstate
part of cpuid, CPU 0:
vendor_id = "AuthenticAMD"
version information (1/eax):
processor type = primary processor (0)
family = Intel Pentium 4/Pentium D/Pentium Extreme Edition/Celeron/Xeon/Xeon MP/Itanium2, AMD Athlon 64/Athlon XP-M/Opteron/Sempron/Turion (15)
model = 0x4 (4)
stepping id = 0x2 (2)
extended family = 0x1 (1)
extended model = 0x0 (0)
(simple synth) = AMD Quad-Core Opteron (Shanghai RB-C2) / Embedded Opteron (Shanghai RB-C2) / Athlon Dual-Core (Regor / Propus RB-C2) / Phenom II (Callisto / Heka / Deneb RB-C2), 45nm
miscellaneous (1/ebx):
process local APIC physical ID = 0x0 (0)
cpu count = 0x4 (4)
CLFLUSH line size = 0x8 (8)
brand index = 0x0 (0)
brand id = 0x00 (0): unknown
Ciao,
Gerhard
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