Kernel – GCC and ‘Retpoline’..

The recent summary of Kernel 4.15 mentioned the test for ‘compliant’ versions of GCC which fully support the retpoline mitigation, but only gave an example of non-compliance: With GCC 7.2: ~]$ cat /sys/devices/system/cpu/vulnerabilities/spectre_v2  Vulnerable: Minimal generic ASM retpoline I re-created … Continue reading

Kernel – Urgent Changes in Latest Versions, to Fix Intel CPU Security..

Apparently, there has been a major security defect discovered in Intel CPUs, and full details have been embargoed until early-January, but there is a comprehensive article in The Register, here:  https://www.theregister.co.uk/2018/01/02/intel_cpu_design_flaw/ The Linux Kernel devs have been working to provide … Continue reading

VMware – Potential Fix for W/S 14 Performance/Memory Issues..

I had found that although VMware 14.0.0 installed OK with Kernel 4.13, the runtime performance was rather ‘sluggish’, and others have reported more serious memory issues… There is a patch that may help with this – and thanks to Roke … Continue reading

VMware – Workstation 14 released – with a Gotcha..

VMware Workstation Pro 14.0.0 has been released – a bit earlier than expected – and it has a (potentially) nasty surprise for those with ‘older’ CPUs..   Release notes are here:  https://docs.vmware.com/en/VMware-Workstation-Pro/14.0.0/rn/workstation-14-release-notes.html I installed this on my test system without any … Continue reading

ARM64 – 4.14-rc1 Problems..?

Kernel 4.14-rc1 has been stable on the x86_64 test system, but when I tried updating the Odroid C2 (ARM64) I saw a lot of mmc and other errors reported.. ………. [ OK ] Started File System Check on Root Device. … Continue reading

Kernel – 4.12-rc1 Released – NVIDIA OK, VMware Not..

Kernel 4.12-rc1 is out – one day early – and brief details are here:  http://lkml.iu.edu/hypermail/linux/kernel/1705.1/03964.html The release includes the reverted GPL/MIT licence changes in refcount.c, and the latest NVIDIA drivers compile/load OK, now: ……………………… Building modules, stage 2. MODPOST 4 … Continue reading

NVIDIA – Still no 4.11 Solution, but a ‘Good’ Patch for Old Version..

Kernel 4.11 ‘final’ has been delayed for a week, and -rc8 has been released..     4.11-patched VMware 12.5.5 is OK, but there is still only a ‘Bad’ (illegal licence modification) patch for the latest NVIDIA driver..   (see https://devtalk.nvidia.com/default/topic/1002820/linux/-patch-381-09-kernel-4-11-rc5/ ) But, if … Continue reading

Kernel – 4.11-rc1 and BTRFS – a Warning..?

I encountered a catastrophic problem with btrfs formatted system disk partition corruption, shortly after updating a test system to Kernel 4.11-rc1. To put this in context, this may be an isolated incident, and I have not seen problems – so … Continue reading

VMware – Patch for Kernel 4.11 Support..

Thanks to Virgo, there are now patches for vmnet and vmmon with Kernel 4.11 (see his comments under the earlier article).    These are incremental patches, for application to VMware 12.5.2 code already patched for Kernel 4.9/4.10 support.. Links are here:   … Continue reading

NVIDIA – New Drivers, Still Broken with 4.10 – And a Patch for 378.13..

NVIDIA have released new drivers 375.39 (‘long term’) and 378.13 (‘short term’) and details are here:  http://www.nvidia.com/download/driverResults.aspx/114708/en-us and http://www.nvidia.com/download/driverResults.aspx/115031/en-us. Both still fail to compile with Kernel 4.10 (tested with 4.10-rc8) and I tried the previous 378.09 patch against 379.13, but … Continue reading