LLVM patch to fix half of Spectre attack
reviews.llvm.org
LLVM patch to fix half of Spectre attack
1–10 of 248 posts
Re: LLVM patch to fix half of Spectre attack
#2The site is down for me. HN hug of death?
Re: LLVM patch to fix half of Spectre attack
#3This patch apparently implements this mitigation: https://support.google.com/faqs/answer/7625886
Re: LLVM patch to fix half of Spectre attack
#4The site is down for me. HN hug of death?
Google text cache:
https://reviews.llvm.org/D41723
Wayback Machine: https://web.archive.org/web/20180104131631/https://reviews.l...
:)
Re: LLVM patch to fix half of Spectre attack
#5[deleted]
Re: LLVM patch to fix half of Spectre attack
#6The site is down for me. HN hug of death?
It was a bit slow but eventually loaded for me.
Re: LLVM patch to fix half of Spectre attack
#7It's noted in the patch that one would have to recompile linked libraries, which seems impractical, unless a distro decides to build everything with this flag.
Re: LLVM patch to fix half of Spectre attack
#8I, for one, am eternally grateful for the incredibly bright people who take the time to patch this sort of stuff.
Re: LLVM patch to fix half of Spectre attack
#9It's noted in the patch that one would have to recompile linked libraries, which seems impractical, unless a distro decides to build everything with this flag.
Not just linked binaries, also the whole underlying OS, and, critically, the compiler itself. Otherwise you could replace the 'proofed' construct with one that is not proofed against the bug.
Re: LLVM patch to fix half of Spectre attack
#10retpoline seems to be a novel concept. Can anyone ELI5?
Also, any insight about performance impact here?