Date: Sun, 8 Jan 2012 21:59:13 +0200 From: Kostik Belousov <kostikbel@gmail.com> To: Yamagi Burmeister <lists@yamagi.org> Cc: amd64@freebsd.org, arch@freebsd.org Subject: Re: AVX Message-ID: <20120108195913.GI31224@deviant.kiev.zoral.com.ua> In-Reply-To: <20120108174112.50e030ba.lists@yamagi.org> References: <20111226220756.GR50300@deviant.kiev.zoral.com.ua> <20120102063700.GF50300@deviant.kiev.zoral.com.ua> <20120108174112.50e030ba.lists@yamagi.org>
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[-- Attachment #1 --] On Sun, Jan 08, 2012 at 05:41:12PM +0100, Yamagi Burmeister wrote: > Hi, > I've tested your patch on a Core2Duo with XSAVE but (of course) without > AVX on 10-CURRENT as of today (r229812): > > CPU: Intel(R) Core(TM)2 Duo CPU T6670 @ 2.20GHz (2194.55-MHz > K8-class CPU) Origin = "GenuineIntel" Id = 0x1067a Family = 6 Model > = 17 Stepping = 10 > Features=0xbfebfbff<FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE, > MCA,CMOV,PAT,PSE36,CLFLUSH,DTS,ACPI,MMX,FXSR,SSE,SSE2,SS,HTT,TM,PBE> > Features2=0x408e3bd<SSE3,DTES64,MON,DS_CPL,VMX,EST,TM2,SSSE3,CX16,xTPR, > PDCM,SSE4.1,XSAVE> > AMD Features=0x20100800<SYSCALL,NX,LM> AMD Features2=0x1<LAHF> Is this Features excerpt from the patched kernel, or from pristine svn sources ? If the later, please show me the Features from the patched kernel. > > Everything's fine: > - System is booting without a problem > - All applications are working > - AVX applications are still failing with SIGILL > > But there's one problem: While a shutdown (shutdown -p now) is always > successfull a reboot (shutdown -r now) and suspend (zzz) are resulting > in a double panic. The first panic is a "Fatal trap 9: general > protection fault while in kernel mode" on "cpuid = 1; apic id = 01". > The process is always "idle: cpu1". > > The second panic is also "Fatal trap 9: general protection fault while > in kernel mode" but with "cpuid = 0; apic id = 00". The process is > always "init". > > Since it's a dual core cpu, one panic for each processor core? > > I'm unable to get a core dump and ddb is unresponsive to any keyboard > input. A serial console is unavailable, since it's a laptop... > Nevertheless I've uploaded screenshots of both panics to: > > http://deponie.yamagi.org/freebsd/debug/avx I thought that I correctly handled savectx, but apparently I did not. The issue for sleep enter could be fixed by the avx.4.patch, I am not sure about shutdown -r panic. http://people.freebsd.org/~kib/misc/avx.4.patch [-- Attachment #2 --] -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.11 (FreeBSD) iEYEARECAAYFAk8J9ZEACgkQC3+MBN1Mb4hCkACfRfaVp2kkmdloEwBMrrxK6wms QCcAoJBGCqQasa9UV9hZbSTAxS4mHVnv =oOp+ -----END PGP SIGNATURE-----
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