Re: [uml-devel] starting an 32 bit x86 chroot uml image at a ahrdened Gentoo amd64 system fails

[Richard Weinberger <richard@nod.at>]

Am 15.03.2015 um 13:07 schrieb Toralf Förster:
> On 03/15/2015 12:27 PM, Richard Weinberger wrote:
> 
> found the culprit :
> CONFIG_MPENTIUMM=y works where CONFIG_MCORE2=y do not work
> 
> 
> I do have an i5:

I have to double check this. Maybe you hint an UML bug.

> processor       : 3
> vendor_id       : GenuineIntel
> cpu family      : 6
> model           : 69
> model name      : Intel(R) Core(TM) i5-4300U CPU @ 1.90GHz
> stepping        : 1
> microcode       : 0x1c
> cpu MHz         : 800.000
> cache size      : 3072 KB
> physical id     : 0
> siblings        : 4
> core id         : 1
> cpu cores       : 2
> apicid          : 3
> initial apicid  : 3
> fpu             : yes
> fpu_exception   : yes
> cpuid level     : 13
> wp              : yes
> flags           : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall nx pdpe1gb rdtscp lm constant_tsc arch_perfmon pebs bts rep_good nopl xtopology nonstop_tsc aperfmperf eagerfpu pni pclmulqdq dtes64 monitor ds_cpl vmx smx est tm2 ssse3 fma cx16 xtpr pdcm pcid sse4_1 sse4_2 x2apic movbe popcnt tsc_deadline_timer aes xsave avx f16c rdrand lahf_lm abm ida arat epb pln pts dtherm tpr_shadow vnmi flexpriority ept vpid stronguderef fsgsbase tsc_adjust bmi1 avx2 smep bmi2 erms invpcid xsaveopt
> bugs            :
> bogomips        : 4988.34
> clflush size    : 64
> cache_alignment : 64
> address sizes   : 39 bits physical, 48 bits virtual
> power management:
> 
> 
> 
>> BTW: In GRML you need to remount /dev/shm with exec. Did you?
> Ick, forget that. BTW this wirks here at my host :
> $> grep shm /etc/fstab 
> shm                     /dev/shm                tmpfs           nosuid,nodev,size=4G 

This works because exec is default.

Thanks,
//richard

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