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Distribution: Slackware64-current with "True Multilib" and KDE4Town.
Posts: 9,167
Original Poster
Rep:
Quote:
Originally Posted by garpu
Ugh. This is going to be brutal, isn't it? When are these patches supposed to hit?
Quote:
Originally Posted by garpu
True. Granted, the thing was from phoronix, but the early numbers they were testing weren't awesome.
There has been some trouble with the 5.18.13 update and I found this among the many messages related to the problems. It is dated yesterday, but as of the moment a new -rc has not been released. I've put the bit about Netbleed in italics.
Quote:
Ok, I think we have a few of the retbleed patches in here that shouldn't
be in there yet. Let me flush them out and then put out a new -rc
tomorrow with this all fixed up. Sasha and I got things crossed, I'll
blame the heat here in Europe and me attempting to take a few days
off......
Distribution: Slackware64-current with "True Multilib" and KDE4Town.
Posts: 9,167
Original Poster
Rep:
Year 2022, Round 45.
Another batch of updates has been scheduled for release on Sunday, 24 July 2022, at approximately 09:00 GMT. If no problems are found while testing the release candidates, they might be available sometime on Saturday (depending on your time zone).
Distribution: VM Host: Slackware-current, VM Guests: Artix, Venom, antiX, Gentoo, FreeBSD, OpenBSD, OpenIndiana
Posts: 1,018
Rep:
Quote:
Originally Posted by burdi01
Just built 5.18.14 with:
Code:
* Mitigations for speculative execution vulnerabilities
*
Mitigations for speculative execution vulnerabilities (SPECULATION_MITIGATIONS) [Y/n/?] (NEW)
Remove the kernel mapping in user mode (PAGE_TABLE_ISOLATION) [Y/n/?] y
Avoid speculative indirect branches in kernel (RETPOLINE) [Y/n/?] y
Enable return-thunks (RETHUNK) [Y/n/?] (NEW)
Enable UNRET on kernel entry (CPU_UNRET_ENTRY) [Y/n/?] (NEW)
Enable IBPB on kernel entry (CPU_IBPB_ENTRY) [Y/n/?] (NEW)
Enable IBRS on kernel entry (CPU_IBRS_ENTRY) [Y/n/?] (NEW)
Mitigate Straight-Line-Speculation (SLS) [Y/n/?] y
The build time went up from 6m19.851s to 6m36.141s, which is a 4.7% increase.
shrug,
if your processor was released in 2021/22 then the above will most likely not affect CPU performance. It is easy to check what affects cpu and which mitigations are needed.
Distribution: Slackware64-current with "True Multilib" and KDE4Town.
Posts: 9,167
Original Poster
Rep:
Quote:
Linux x86 32-bit Is Vulnerable To Retbleed But Don't Expect It To Get Fixed.
Michael Larabel. 23 July 2022 at 07:39 PM EDT
While relevant Intel and AMD processors have been mitigated for the recent Retbleed security vulnerability affecting older generations of processors, those mitigations currently just work for x86_64 kernels and will not work if running an x86 (32-bit) kernel on affected hardware. But it's unlikely to get fixed unless some passionate individual steps up as the upstream developers and vendors have long since moved on to just caring about x86_64......
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This is going to be brutal, isn't it? When are these patches supposed to hit?
