Date: Mon, 13 Dec 2010 15:31:48 +0000 From: "Robert N. M. Watson" <rwatson@FreeBSD.org> To: Ion-Mihai Tetcu <itetcu@FreeBSD.org> Cc: svn-src-stable@freebsd.org, svn-src-all@freebsd.org, src-committers@freebsd.org, svn-src-stable-8@freebsd.org Subject: Re: svn commit: r216406 - stable/8/sys/amd64/conf Message-ID: <B7ED1E1F-5797-448E-A1A7-D905E7EE5FD5@FreeBSD.org> In-Reply-To: <20101213160021.60401b79@it.buh.tecnik93.com> References: <201012131234.oBDCYZvl082510@svn.freebsd.org> <20101213160021.60401b79@it.buh.tecnik93.com>
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On 13 Dec 2010, at 14:00, Ion-Mihai Tetcu wrote: >> Derive the XENHVM kernel from GENERIC, adding only the options >> required to support PV drivers (such as xenpci), and non-adptive >> locking (along with a comment about why). > > What about the same for i386? We don't currently support combining PV drivers with a non-PV kernel on i386; nor do we support a pure PV kernel on amd64. The former strikes me as more of a problem than the latter. Other than Amazon EC2, it seems most interesting targets will support HVM in practice, and benefit from PV drivers, but not require a pure PV kernel (i.e., Xen-modified VM system). Your kernel configuration is likely trying to build options XEN on i386 without PAE; we currently require options PAE to build a PV Xen kernel on i386. (It also looks like "options XEN" is spelled "option XEN" in your config file below?) Robert > > > BTW, on a i386R trying to do a > make buildworld && make buildkernel KERNCONF=VPS > yesterday resulted in: > > cc -c -O -pipe -std=c99 -g -Wall -Wredundant-decls -Wnested-externs -Wstrict-prototypes -Wmissing-prototypes -Wpointer-arith -Winline -Wcast-qual -Wundef -Wno-pointer-sign -fformat-extensions -nostdinc -I. -I/usr/src/sys -I/usr/src/sys/contrib/altq -D_KERNEL -DHAVE_KERNEL_OPTION_HEADERS -include opt_global.h -fno-common -finline-limit=8000 --param inline-unit-growth=100 --param large-function-growth=1000 -mno-align-long-strings -mpreferred-stack-boundary=2 -mno-mmx -mno-3dnow -mno-sse -mno-sse2 -mno-sse3 -ffreestanding -fstack-protector -Werror /usr/src/sys/i386/xen/xen_machdep.c > /usr/src/sys/i386/xen/xen_machdep.c: In function 'initvalues': > /usr/src/sys/i386/xen/xen_machdep.c:1077: error: 'IdlePTDnew' undeclared (first use in this function) > /usr/src/sys/i386/xen/xen_machdep.c:1077: error: (Each undeclared identifier is reported only once > /usr/src/sys/i386/xen/xen_machdep.c:1077: error: for each function it appears in.) > /usr/src/sys/i386/xen/xen_machdep.c:1082: error: 'IdlePTDnewma' undeclared (first use in this function) > /usr/src/sys/i386/xen/xen_machdep.c:1085: error: 'IdlePDPTnew' undeclared (first use in this function) > /usr/src/sys/i386/xen/xen_machdep.c:1124: error: 'IdlePDPT' undeclared (first use in this function) > /usr/src/sys/i386/xen/xen_machdep.c:1125: error: 'IdlePDPTma' undeclared (first use in this function) > /usr/src/sys/i386/xen/xen_machdep.c:1125: error: 'IdlePDPTnewma' undeclared (first use in this function) > cc1: warnings being treated as errors > /usr/src/sys/i386/xen/xen_machdep.c:893: warning: unused variable 'pdir_shadow_ma' > *** Error code 1 > > > Maybe I have something wrong in the KERNCONF? > > # cat /root/kernels/ > # > # XEN -- Kernel configuration for i386 XEN DomU > # > # $FreeBSD: src/sys/i386/conf/XEN,v 1.9.2.2 2010/11/28 16:25:16 cperciva Exp $ > > cpu I686_CPU > ident XEN > > makeoptions DEBUG=-g # Build kernel with gdb(1) debug symbols > #makeoptions MODULES_OVERRIDE="" > > options SCHED_ULE # ULE scheduler > options PREEMPTION # Enable kernel thread preemption > > options INET # InterNETworking > options INET6 # IPv6 communications protocols > options SCTP # Stream Control Transmission Protocol > options FFS # Berkeley Fast Filesystem > options SOFTUPDATES # Enable FFS soft updates support > options UFS_ACL # Support for access control lists > options UFS_DIRHASH # Improve performance on big directories > options GEOM_LABEL # Provides labelization > options COMPAT_43TTY # BSD 4.3 TTY compat (sgtty) > options COMPAT_FREEBSD7 # Compatible with FreeBSD7 > options KTRACE # ktrace(1) support > options STACK # stack(9) support > options SYSVSHM # SYSV-style shared memory > options SYSVMSG # SYSV-style message queues > options SYSVSEM # SYSV-style semaphores > options P1003_1B_SEMAPHORES # POSIX-style semaphores > options _KPOSIX_PRIORITY_SCHEDULING # POSIX P1003_1B real-time extensions > options KBD_INSTALL_CDEV # install a CDEV entry in /dev > > # Debugging for use in -current > options KDB # Enable kernel debugger support. > #options DDB # Support DDB. > #options GDB # Support remote GDB. > #options INVARIANTS # Enable calls of extra sanity checking > #options INVARIANT_SUPPORT # Extra sanity checks of internal structures, required by INVARIANTS > #options WITNESS # Enable checks to detect deadlocks and cycles > #options WITNESS_SKIPSPIN # Don't run witness on spinlocks for speed > > nooption NATIVE > option XEN > nodevice atpic > nodevice isa > options MCLSHIFT=12 > > # To make an SMP kernel, the next two lines are needed > options SMP # Symmetric MultiProcessor Kernel > device apic # I/O APIC > > > #device atkbdc # AT keyboard controller > #device atkbd # AT keyboard > #device psm # PS/2 mouse > device pci > > #device kbdmux # keyboard multiplexer > > device loop # Network loopback > device random # Entropy device > device ether # Ethernet support > device pty # Pseudo-ttys (telnet etc) > device bpf # Berkeley packet filter > > device eisa > device ata > options ATA_STATIC_ID # Static device numbering > > device vga # VGA video card driver > options VGA_NO_FONT_LOADING > options VGA_NO_MODE_CHANGE > > # syscons is the default console driver, resembling an SCO console > device sc > options SC_NO_CUTPASTE > options SC_NO_FONT_LOADING > options SC_NO_HISTORY > options SC_NO_MODE_CHANGE > options SC_NO_SYSMOUSE > > device pmtimer > > > > -- > IOnut - Un^d^dregistered ;) FreeBSD "user" > "Intellectual Property" is nowhere near as valuable as "Intellect" > FreeBSD committer -> itetcu@FreeBSD.org, PGP Key ID 057E9F8B493A297B
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