CPU vulnerabilities

AmigaOne X5000 platform specific issues related to Linux only.
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xeno74
Posts: 9348
Joined: Fri Mar 23, 2012 7:58 am

CPU vulnerabilities

Post by xeno74 »

FYI:

X1000, CPU: PWRficient PA6T-1682M, kernel 4.20-rc3: grep . /sys/devices/system/cpu/vulnerabilities/*

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/sys/devices/system/cpu/vulnerabilities/l1tf:Not affected
/sys/devices/system/cpu/vulnerabilities/meltdown:Vulnerable
/sys/devices/system/cpu/vulnerabilities/spec_store_bypass:Vulnerable
/sys/devices/system/cpu/vulnerabilities/spectre_v1:Mitigation: __user pointer sanitization
/sys/devices/system/cpu/vulnerabilities/spectre_v2:Mitigation: Software count cache flush
X5000/020, CPU: P5020 (e5500), kernel 4.20-rc3: grep . /sys/devices/system/cpu/vulnerabilities/*

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/sys/devices/system/cpu/vulnerabilities/l1tf:Not affected
/sys/devices/system/cpu/vulnerabilities/meltdown:Not affected
/sys/devices/system/cpu/vulnerabilities/spec_store_bypass:Not affected
/sys/devices/system/cpu/vulnerabilities/spectre_v1:Mitigation: __user pointer sanitization
/sys/devices/system/cpu/vulnerabilities/spectre_v2:Mitigation: Software count cache flush
http://www.amigalinux.org
http://www.supertuxkart-amiga.de

Running Linux on AmigaONEs can require some tinkering.
User avatar
xeno74
Posts: 9348
Joined: Fri Mar 23, 2012 7:58 am

Re: CPU vulnerabilities

Post by xeno74 »

Hi,

I reported the PA6T vulnerabilities to the Linux PPC developers today.

Link: https://lists.ozlabs.org/pipermail/linuxppc-dev/2018-November/181780.html

The P5020 CPU doesn’t have any problems with vulnerabilities with the latest Linux kernels! :-)

Have a nice week!

Cheers,
Christian
http://www.amigalinux.org
http://www.supertuxkart-amiga.de

Running Linux on AmigaONEs can require some tinkering.
User avatar
xeno74
Posts: 9348
Joined: Fri Mar 23, 2012 7:58 am

Re: CPU vulnerabilities

Post by xeno74 »

FYI:

X5000/020, CPU: P5020 (e5500), kernel 4.21-alpha3: grep . /sys/devices/system/cpu/vulnerabilities/*

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/sys/devices/system/cpu/vulnerabilities/l1tf:Not affected
/sys/devices/system/cpu/vulnerabilities/meltdown:Not affected
/sys/devices/system/cpu/vulnerabilities/spec_store_bypass:Not affected
/sys/devices/system/cpu/vulnerabilities/spectre_v1:Mitigation: __user pointer sanitization
/sys/devices/system/cpu/vulnerabilities/spectre_v2:Mitigation: Branch predictor state flush
Further information: NXP PowerPC Processors Finally Being Mitigated Against Spectre V2 With Linux 4.21
http://www.amigalinux.org
http://www.supertuxkart-amiga.de

Running Linux on AmigaONEs can require some tinkering.
User avatar
xeno74
Posts: 9348
Joined: Fri Mar 23, 2012 7:58 am

Re: CPU vulnerabilities

Post by xeno74 »

CPU information (cpuinfo) with the kernel 5.16 on an AmigaOne X5000/40:

cat /proc/cpuinfo

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processor	: 0
cpu		: e5500
clock		: 2200.000000MHz
revision	: 1.2 (pvr 8024 0012)

processor	: 1
cpu		: e5500
clock		: 2200.000000MHz
revision	: 1.2 (pvr 8024 0012)

processor	: 2
cpu		: e5500
clock		: 2200.000000MHz
revision	: 1.2 (pvr 8024 0012)

processor	: 3
cpu		: e5500
clock		: 2200.000000MHz
revision	: 1.2 (pvr 8024 0012)

timebase	: 50000000
platform	: CoreNet Generic
model		: varisys,CYRUS5040
lscpu

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Architecture:                    ppc64
CPU op-mode(s):                  32-bit, 64-bit
Byte Order:                      Big Endian
CPU(s):                          4
On-line CPU(s) list:             0-3
Thread(s) per core:              1
Core(s) per socket:              4
Socket(s):                       1
Model:                           1.2 (pvr 8024 0012)
Model name:                      e5500
L1d cache:                       128 KiB
L1i cache:                       128 KiB
L2 cache:                        2 MiB
L3 cache:                        2 MiB
Vulnerability Itlb multihit:     Not affected
Vulnerability L1tf:              Not affected
Vulnerability Mds:               Not affected
Vulnerability Meltdown:          Not affected
Vulnerability Spec store bypass: Not affected
Vulnerability Spectre v1:        Mitigation; __user pointer sanitization
Vulnerability Spectre v2:        Mitigation; Branch predictor state flush
Vulnerability Srbds:             Not affected
Vulnerability Tsx async abort:   Not affected
http://www.amigalinux.org
http://www.supertuxkart-amiga.de

Running Linux on AmigaONEs can require some tinkering.
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