Date: Thu, 21 Jun 2018 18:01:01 +0000 From: bugzilla-noreply@freebsd.org To: bugs@FreeBSD.org Subject: [Bug 229215] hw.spec_store_bypass_disable_active=0 when hw.spec_store_bypass_disable=1 on AMD CPU Message-ID: <bug-229215-227@https.bugs.freebsd.org/bugzilla/>
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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=229215 Bug ID: 229215 Summary: hw.spec_store_bypass_disable_active=0 when hw.spec_store_bypass_disable=1 on AMD CPU Product: Base System Version: 11.1-STABLE Hardware: Any OS: Any Status: New Severity: Affects Only Me Priority: --- Component: kern Assignee: bugs@FreeBSD.org Reporter: pkubaj@anongoth.pl I have two boxes with AMD Opteron 6262HE and 6386SE. Both are reportedly vulnerable to Spectre v4, but it's reported that they don't need new microcode, only kernel patches. I'm running 11-STABLE and have hw.spec_store_bypass_disable=1. Even then I can see that hw.spec_store_bypass_disable_active is 0. On another PC, with new Intel microcode from platomav repo, hw.spec_store_bypass_disable_active is 1, which suggests that something is wrong with SSBD for AMD. -- You are receiving this mail because: You are the assignee for the bug.
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