Date: Sat, 03 Oct 2020 23:17:34 +0000 From: bugzilla-noreply@freebsd.org To: bugs@FreeBSD.org Subject: [Bug 250043] ptrace() GETFPREGS/SETFPREGS uses 32-bit version of *XSAVE*/*XRSTOR* truncating FIP/FDP Message-ID: <bug-250043-227-MdFKoabRm0@https.bugs.freebsd.org/bugzilla/> In-Reply-To: <bug-250043-227@https.bugs.freebsd.org/bugzilla/> References: <bug-250043-227@https.bugs.freebsd.org/bugzilla/>
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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D250043 --- Comment #2 from commit-hook@FreeBSD.org --- A commit references this bug: Author: kib Date: Sat Oct 3 23:17:30 UTC 2020 New revision: 366417 URL: https://svnweb.freebsd.org/changeset/base/366417 Log: amd64: Store full 64bit of FIP/FDP for 64bit processes when using XSAVE. If current process is 64bit, use rex-prefixed version of XSAVE (XSAVE64). If current process is 32bit and CPU supports saving segment registers cs/ds in the FPU save area, use non-prefixed variant of XSAVE. Reported and tested by: Micha? G?rny <mgorny@mgorny@moritz.systems> PR: 250043 Reviewed by: emaste, markj Sponsored by: The FreeBSD Foundation MFC after: 1 week Differential revision: https://reviews.freebsd.org/D26643 Changes: head/sys/amd64/amd64/cpu_switch.S head/sys/amd64/amd64/fpu.c head/sys/amd64/include/md_var.h --=20 You are receiving this mail because: You are the assignee for the bug.=
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