Date: Sat, 16 Aug 2008 22:06:18 GMT From: Julian Elischer <julian@FreeBSD.org> To: Perforce Change Reviews <perforce@freebsd.org> Subject: PERFORCE change 147610 for review Message-ID: <200808162206.m7GM6IWM089326@repoman.freebsd.org>
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http://perforce.freebsd.org/chv.cgi?CH=147610 Change 147610 by julian@julian_trafmon1 on 2008/08/16 22:05:59 bring in the xen stuff. Affected files ... .. //depot/projects/vimage-devel/src/sys/amd64/conf/GENERIC_NODEBUG#2 integrate .. //depot/projects/vimage-devel/src/sys/amd64/conf/VIMAGE#2 integrate .. //depot/projects/vimage-devel/src/sys/amd64/conf/VIMAGE_NODEBUG#2 integrate .. //depot/projects/vimage-devel/src/sys/amd64/conf/VLINT#2 integrate .. //depot/projects/vimage-devel/src/sys/conf/files#9 integrate .. //depot/projects/vimage-devel/src/sys/conf/files.i386#5 integrate .. //depot/projects/vimage-devel/src/sys/conf/options.i386#3 integrate .. //depot/projects/vimage-devel/src/sys/dev/pci/pci_pci.c#3 integrate .. //depot/projects/vimage-devel/src/sys/dev/pci/pcib_private.h#2 integrate .. //depot/projects/vimage-devel/src/sys/i386/conf/.cvsignore#2 integrate .. //depot/projects/vimage-devel/src/sys/i386/conf/DEFAULTS#2 integrate .. //depot/projects/vimage-devel/src/sys/i386/conf/GENERIC_NODEBUG#2 integrate .. //depot/projects/vimage-devel/src/sys/i386/conf/MAC#2 integrate .. //depot/projects/vimage-devel/src/sys/i386/conf/Makefile#2 integrate .. //depot/projects/vimage-devel/src/sys/i386/conf/VIMAGE_NODEBUG#2 integrate .. //depot/projects/vimage-devel/src/sys/i386/conf/VLINT#2 integrate .. //depot/projects/vimage-devel/src/sys/i386/conf/XEN#1 branch .. //depot/projects/vimage-devel/src/sys/i386/i386/busdma_machdep.c#3 integrate .. //depot/projects/vimage-devel/src/sys/i386/i386/genassym.c#2 integrate .. //depot/projects/vimage-devel/src/sys/i386/i386/machdep.c#2 integrate .. //depot/projects/vimage-devel/src/sys/i386/i386/support.s#3 integrate .. //depot/projects/vimage-devel/src/sys/i386/i386/sys_machdep.c#2 integrate .. //depot/projects/vimage-devel/src/sys/i386/i386/trap.c#3 integrate .. //depot/projects/vimage-devel/src/sys/i386/i386/vm_machdep.c#2 integrate .. //depot/projects/vimage-devel/src/sys/i386/include/asmacros.h#2 integrate .. //depot/projects/vimage-devel/src/sys/i386/include/cpufunc.h#3 integrate .. //depot/projects/vimage-devel/src/sys/i386/include/pcpu.h#2 integrate .. //depot/projects/vimage-devel/src/sys/i386/include/pmap.h#3 integrate .. //depot/projects/vimage-devel/src/sys/i386/include/segments.h#2 integrate .. //depot/projects/vimage-devel/src/sys/i386/include/trap.h#2 integrate .. //depot/projects/vimage-devel/src/sys/i386/include/vmparam.h#2 integrate .. //depot/projects/vimage-devel/src/sys/i386/isa/npx.c#2 integrate .. //depot/projects/vimage-devel/src/sys/i386/pci/pci_cfgreg.c#2 integrate .. //depot/projects/vimage-devel/src/sys/i386/pci/pci_pir.c#2 integrate .. //depot/projects/vimage-devel/src/sys/kern/init_main.c#4 integrate .. //depot/projects/vimage-devel/src/sys/netinet/udp_usrreq.c#9 integrate .. //depot/projects/vimage-devel/src/sys/netinet6/ip6_input.c#6 integrate .. //depot/projects/vimage-devel/src/sys/netinet6/ip6_var.h#4 integrate .. //depot/projects/vimage-devel/src/sys/xen/features.c#1 branch Differences ... ==== //depot/projects/vimage-devel/src/sys/amd64/conf/GENERIC_NODEBUG#2 (text+ko) ==== ==== //depot/projects/vimage-devel/src/sys/amd64/conf/VIMAGE#2 (text+ko) ==== ==== //depot/projects/vimage-devel/src/sys/amd64/conf/VIMAGE_NODEBUG#2 (text+ko) ==== ==== //depot/projects/vimage-devel/src/sys/amd64/conf/VLINT#2 (text+ko) ==== ==== //depot/projects/vimage-devel/src/sys/conf/files#9 (text+ko) ==== @@ -1,4 +1,4 @@ -# $FreeBSD: src/sys/conf/files,v 1.1329 2008/08/14 21:26:29 imp Exp $ +# $FreeBSD: src/sys/conf/files,v 1.1330 2008/08/15 20:58:57 kmacy Exp $ # # The long compile-with and dependency lines are required because of # limitations in config: backslash-newline doesn't work in strings, and @@ -1726,6 +1726,7 @@ libkern/strcat.c standard libkern/strcmp.c standard libkern/strcpy.c standard +libkern/strcspn.c standard libkern/strdup.c standard libkern/strlcat.c standard libkern/strlcpy.c standard @@ -2342,3 +2343,18 @@ compile-with "${NORMAL_C} -I$S/gnu/fs/xfs/FreeBSD -I$S/gnu/fs/xfs/FreeBSD/support -I$S/gnu/fs/xfs" gnu/fs/xfs/xfs_behavior.c optional xfs \ compile-with "${NORMAL_C} -I$S/gnu/fs/xfs/FreeBSD -I$S/gnu/fs/xfs/FreeBSD/support -I$S/gnu/fs/xfs" + +xen/gnttab.c optional xen +xen/features.c optional xen +xen/evtchn/evtchn.c optional xen +xen/evtchn/evtchn_dev.c optional xen +xen/xenbus/xenbus_client.c optional xen +xen/xenbus/xenbus_comms.c optional xen +xen/xenbus/xenbus_dev.c optional xen +xen/xenbus/xenbus_probe.c optional xen +xen/xenbus/xenbus_probe_backend.c optional xen +xen/xenbus/xenbus_xs.c optional xen +dev/xen/console/console.c optional xen +dev/xen/console/xencons_ring.c optional xen +dev/xen/blkfront/blkfront.c optional xen +dev/xen/netfront/netfront.c optional xen ==== //depot/projects/vimage-devel/src/sys/conf/files.i386#5 (text+ko) ==== @@ -1,7 +1,7 @@ # This file tells config what files go into building a kernel, # files marked standard are always included. # -# $FreeBSD: src/sys/conf/files.i386,v 1.602 2008/08/09 14:52:31 philip Exp $ +# $FreeBSD: src/sys/conf/files.i386,v 1.603 2008/08/15 20:58:57 kmacy Exp $ # # The long compile-with and dependency lines are required because of # limitations in config: backslash-newline doesn't work in strings, and @@ -254,8 +254,8 @@ i386/i386/atomic.c standard \ compile-with "${CC} -c ${CFLAGS} ${DEFINED_PROF:S/^$/-fomit-frame-pointer/} ${.IMPSRC}" i386/i386/autoconf.c standard -i386/i386/bios.c standard -i386/i386/bioscall.s standard +i386/i386/bios.c optional native +i386/i386/bioscall.s optional native i386/i386/bpf_jit_machdep.c optional bpf_jitter i386/i386/busdma_machdep.c standard i386/i386/db_disasm.c optional ddb @@ -264,7 +264,8 @@ i386/i386/dump_machdep.c standard i386/i386/elan-mmcr.c optional cpu_elan | cpu_soekris i386/i386/elf_machdep.c standard -i386/i386/exception.s standard +i386/i386/exception.s optional native +i386/xen/exception.s optional xen i386/i386/gdb_machdep.c optional gdb i386/i386/geode.c optional cpu_geode i386/i386/i686_mem.c optional mem @@ -277,9 +278,11 @@ i386/i386/k6_mem.c optional mem i386/i386/legacy.c standard i386/i386/local_apic.c optional apic -i386/i386/locore.s standard no-obj +i386/i386/locore.s optional native no-obj +i386/xen/locore.s optional xen no-obj i386/i386/longrun.c optional cpu_enable_longrun i386/i386/machdep.c standard +i386/xen/xen_machdep.c optional xen i386/i386/mem.c optional mem i386/i386/minidump_machdep.c standard i386/i386/mp_clock.c optional smp @@ -291,7 +294,8 @@ i386/i386/msi.c optional apic pci i386/i386/nexus.c standard i386/i386/perfmon.c optional perfmon -i386/i386/pmap.c standard +i386/i386/pmap.c optional native +i386/xen/pmap.c optional xen i386/i386/ptrace_machdep.c standard i386/i386/stack_machdep.c optional ddb | stack i386/i386/support.s standard @@ -321,9 +325,10 @@ i386/ibcs2/ibcs2_xenix.c optional ibcs2 i386/ibcs2/ibcs2_xenix_sysent.c optional ibcs2 i386/ibcs2/imgact_coff.c optional ibcs2 -i386/isa/atpic.c standard +i386/isa/atpic.c optional atpic #i386/isa/atpic_vector.s standard -i386/isa/clock.c standard +i386/isa/clock.c optional native +i386/xen/clock.c optional xen i386/isa/elcr.c standard i386/isa/elink.c optional ep | ie i386/isa/isa.c optional isa @@ -346,13 +351,13 @@ i386/linux/linux_sysvec.c optional compat_linux i386/pci/pci_bus.c optional pci i386/pci/pci_cfgreg.c optional pci -i386/pci/pci_pir.c optional pci +i386/pci/pci_pir.c optional pci i386/svr4/svr4_locore.s optional compat_svr4 \ dependency "svr4_assym.h" \ warning "COMPAT_SVR4 is broken and should be avoided" i386/svr4/svr4_machdep.c optional compat_svr4 # -isa/atrtc.c standard +isa/atrtc.c optional atpic isa/syscons_isa.c optional sc isa/vga_isa.c optional vga kern/imgact_aout.c optional compat_aout ==== //depot/projects/vimage-devel/src/sys/conf/options.i386#3 (text+ko) ==== @@ -1,4 +1,4 @@ -# $FreeBSD: src/sys/conf/options.i386,v 1.242 2008/06/14 12:51:44 wkoszek Exp $ +# $FreeBSD: src/sys/conf/options.i386,v 1.243 2008/08/15 20:58:57 kmacy Exp $ # Options specific to the i386 platform kernels AUTO_EOI_1 opt_auto_eoi.h @@ -111,3 +111,6 @@ # BPF just-in-time compiler BPF_JITTER opt_bpf.h + +NATIVE opt_global.h +XEN opt_global.h ==== //depot/projects/vimage-devel/src/sys/dev/pci/pci_pci.c#3 (text+ko) ==== @@ -29,7 +29,7 @@ */ #include <sys/cdefs.h> -__FBSDID("$FreeBSD: src/sys/dev/pci/pci_pci.c,v 1.51 2008/07/23 09:44:36 luoqi Exp $"); +__FBSDID("$FreeBSD: src/sys/dev/pci/pci_pci.c,v 1.52 2008/08/16 20:18:40 imp Exp $"); /* * PCI:PCI bridge support. @@ -139,6 +139,8 @@ { struct pcib_softc *sc; uint8_t iolow; + struct sysctl_ctx_list *sctx; + struct sysctl_oid *soid; sc = device_get_softc(dev); sc->dev = dev; @@ -148,6 +150,7 @@ */ sc->command = pci_read_config(dev, PCIR_COMMAND, 1); sc->domain = pci_get_domain(dev); + sc->pribus = pci_read_config(dev, PCIR_PRIBUS_1, 1); sc->secbus = pci_read_config(dev, PCIR_SECBUS_1, 1); sc->subbus = pci_read_config(dev, PCIR_SUBBUS_1, 1); sc->secstat = pci_read_config(dev, PCIR_SECSTAT_1, 2); @@ -155,6 +158,20 @@ sc->seclat = pci_read_config(dev, PCIR_SECLAT_1, 1); /* + * Setup sysctl reporting nodes + */ + sctx = device_get_sysctl_ctx(dev); + soid = device_get_sysctl_tree(dev); + SYSCTL_ADD_UINT(sctx, SYSCTL_CHILDREN(soid), OID_AUTO, "domain", + CTLFLAG_RD, &sc->domain, 0, "Domain number"); + SYSCTL_ADD_UINT(sctx, SYSCTL_CHILDREN(soid), OID_AUTO, "pribus", + CTLFLAG_RD, &sc->pribus, 0, "Primary bus number"); + SYSCTL_ADD_UINT(sctx, SYSCTL_CHILDREN(soid), OID_AUTO, "secbus", + CTLFLAG_RD, &sc->secbus, 0, "Secondary bus number"); + SYSCTL_ADD_UINT(sctx, SYSCTL_CHILDREN(soid), OID_AUTO, "subbus", + CTLFLAG_RD, &sc->subbus, 0, "Subordinate bus number"); + + /* * Determine current I/O decode. */ if (sc->command & PCIM_CMD_PORTEN) { ==== //depot/projects/vimage-devel/src/sys/dev/pci/pcib_private.h#2 (text+ko) ==== @@ -27,7 +27,7 @@ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. * - * $FreeBSD: src/sys/dev/pci/pcib_private.h,v 1.13 2007/09/30 11:05:15 marius Exp $ + * $FreeBSD: src/sys/dev/pci/pcib_private.h,v 1.14 2008/08/16 20:18:40 imp Exp $ */ #ifndef __PCIB_PRIVATE_H__ @@ -48,9 +48,10 @@ #define PCIB_SUBTRACTIVE 0x1 #define PCIB_DISABLE_MSI 0x2 uint16_t command; /* command register */ - uint32_t domain; /* domain number */ - uint8_t secbus; /* secondary bus number */ - uint8_t subbus; /* subordinate bus number */ + u_int domain; /* domain number */ + u_int pribus; /* primary bus number */ + u_int secbus; /* secondary bus number */ + u_int subbus; /* subordinate bus number */ pci_addr_t pmembase; /* base address of prefetchable memory */ pci_addr_t pmemlimit; /* topmost address of prefetchable memory */ pci_addr_t membase; /* base address of memory window */ ==== //depot/projects/vimage-devel/src/sys/i386/conf/.cvsignore#2 (text+ko) ==== ==== //depot/projects/vimage-devel/src/sys/i386/conf/DEFAULTS#2 (text+ko) ==== @@ -1,7 +1,7 @@ # # DEFAULTS -- Default kernel configuration file for FreeBSD/i386 # -# $FreeBSD: src/sys/i386/conf/DEFAULTS,v 1.13 2008/03/12 10:11:57 jeff Exp $ +# $FreeBSD: src/sys/i386/conf/DEFAULTS,v 1.14 2008/08/15 20:58:57 kmacy Exp $ machine i386 @@ -22,3 +22,7 @@ # Default partitioning schemes options GEOM_BSD options GEOM_MBR + +# enable support for native hardware +options NATIVE +device atpic ==== //depot/projects/vimage-devel/src/sys/i386/conf/GENERIC_NODEBUG#2 (text+ko) ==== ==== //depot/projects/vimage-devel/src/sys/i386/conf/MAC#2 (text+ko) ==== ==== //depot/projects/vimage-devel/src/sys/i386/conf/Makefile#2 (text+ko) ==== ==== //depot/projects/vimage-devel/src/sys/i386/conf/VIMAGE_NODEBUG#2 (text+ko) ==== ==== //depot/projects/vimage-devel/src/sys/i386/conf/VLINT#2 (text+ko) ==== ==== //depot/projects/vimage-devel/src/sys/i386/i386/busdma_machdep.c#3 (text+ko) ==== @@ -25,7 +25,7 @@ */ #include <sys/cdefs.h> -__FBSDID("$FreeBSD: src/sys/i386/i386/busdma_machdep.c,v 1.93 2008/07/15 03:34:49 alc Exp $"); +__FBSDID("$FreeBSD: src/sys/i386/i386/busdma_machdep.c,v 1.94 2008/08/15 20:51:31 kmacy Exp $"); #include <sys/param.h> #include <sys/kdb.h> @@ -144,6 +144,11 @@ int _bus_dmamap_count_pages(bus_dma_tag_t dmat, bus_dmamap_t map, void *buf, bus_size_t buflen, int flags); +#ifdef XEN +#undef pmap_kextract +#define pmap_kextract pmap_kextract_ma +#endif + /* * Return true if a match is made. * ==== //depot/projects/vimage-devel/src/sys/i386/i386/genassym.c#2 (text+ko) ==== @@ -33,7 +33,7 @@ */ #include <sys/cdefs.h> -__FBSDID("$FreeBSD: src/sys/i386/i386/genassym.c,v 1.162 2008/05/16 13:23:47 attilio Exp $"); +__FBSDID("$FreeBSD: src/sys/i386/i386/genassym.c,v 1.163 2008/08/15 20:51:31 kmacy Exp $"); #include "opt_apic.h" #include "opt_compat.h" @@ -228,3 +228,9 @@ ASSYM(BUS_SPACE_HANDLE_BASE, offsetof(struct bus_space_handle, bsh_base)); ASSYM(BUS_SPACE_HANDLE_IAT, offsetof(struct bus_space_handle, bsh_iat)); #endif + +#ifdef XEN +#include <machine/xen/hypervisor.h> +ASSYM(PC_CR3, offsetof(struct pcpu, pc_cr3)); +ASSYM(HYPERVISOR_VIRT_START, __HYPERVISOR_VIRT_START); +#endif ==== //depot/projects/vimage-devel/src/sys/i386/i386/machdep.c#2 (text+ko) ==== @@ -38,7 +38,7 @@ */ #include <sys/cdefs.h> -__FBSDID("$FreeBSD: src/sys/i386/i386/machdep.c,v 1.670 2008/04/25 05:18:48 jeff Exp $"); +__FBSDID("$FreeBSD: src/sys/i386/i386/machdep.c,v 1.671 2008/08/15 20:51:31 kmacy Exp $"); #include "opt_apic.h" #include "opt_atalk.h" @@ -141,6 +141,25 @@ uint32_t arch_i386_xbox_memsize = 0; #endif +#ifdef XEN +/* XEN includes */ +#include <machine/xen/xen-os.h> +#include <machine/xen/hypervisor.h> +#include <machine/xen/xen-os.h> +#include <machine/xen/xenvar.h> +#include <machine/xen/xenfunc.h> +#include <machine/xen/xen_intr.h> + +void Xhypervisor_callback(void); +void failsafe_callback(void); + +extern trap_info_t trap_table[]; +struct proc_ldt default_proc_ldt; +extern int init_first; +int running_xen = 1; +extern unsigned long physfree; +#endif /* XEN */ + /* Sanity check for __curthread() */ CTASSERT(offsetof(struct pcpu, pc_curthread) == 0); @@ -287,8 +306,9 @@ */ bufinit(); vm_pager_bufferinit(); - +#ifndef XEN cpu_setregs(); +#endif } /* @@ -1118,6 +1138,24 @@ return (0); } + +void (*cpu_idle_hook)(void) = NULL; /* ACPI idle hook. */ + +#ifdef XEN + +void +cpu_halt(void) +{ + HYPERVISOR_shutdown(SHUTDOWN_poweroff); +} + +static void +cpu_idle_hlt(int busy) +{ + idle_block(); +} + +#else /* * Shutdown the CPU as much as possible */ @@ -1128,8 +1166,6 @@ __asm__ ("hlt"); } -void (*cpu_idle_hook)(void) = NULL; /* ACPI idle hook. */ - static void cpu_idle_hlt(int busy) { @@ -1143,6 +1179,7 @@ else __asm __volatile("sti; hlt"); } +#endif static void cpu_idle_acpi(int busy) @@ -1437,10 +1474,16 @@ */ int _default_ldt; + +#ifdef XEN +union descriptor *gdt; +union descriptor *ldt; +#else union descriptor gdt[NGDT * MAXCPU]; /* global descriptor table */ +union descriptor ldt[NLDT]; /* local descriptor table */ +#endif static struct gate_descriptor idt0[NIDT]; struct gate_descriptor *idt = &idt0[0]; /* interrupt descriptor table */ -union descriptor ldt[NLDT]; /* local descriptor table */ struct region_descriptor r_gdt, r_idt; /* table descriptors */ struct mtx dt_lock; /* lock for GDT and LDT */ @@ -1542,6 +1585,7 @@ 0, 0, 1, /* default 32 vs 16 bit size */ 1 /* limit granularity (byte/page units)*/ }, +#ifndef XEN /* GPROC0_SEL 9 Proc 0 Tss Descriptor */ { 0x0, /* segment base address */ @@ -1633,6 +1677,7 @@ 0, 0, 0, /* default 32 vs 16 bit size */ 0 /* limit granularity (byte/page units)*/ }, +#endif /* !XEN */ }; static struct soft_segment_descriptor ldt_segs[] = { @@ -1870,7 +1915,16 @@ goto physmap_done; } #endif - +#if defined(XEN) + has_smap = 0; + Maxmem = xen_start_info->nr_pages - init_first; + physmem = Maxmem; + basemem = 0; + physmap[0] = init_first << PAGE_SHIFT; + physmap[1] = ptoa(Maxmem) - round_page(MSGBUF_SIZE); + physmap_idx = 0; + goto physmap_done; +#endif hasbrokenint12 = 0; TUNABLE_INT_FETCH("hw.hasbrokenint12", &hasbrokenint12); bzero(&vmf, sizeof(vmf)); @@ -2032,7 +2086,7 @@ vmf.vmf_ah = 0x88; vm86_intcall(0x15, &vmf); extmem = vmf.vmf_ax; -#else +#elif !defined(XEN) /* * Prefer the RTC value for extended memory. */ @@ -2123,6 +2177,7 @@ getenv_quad("dcons.size", &dcons_size) == 0) dcons_addr = 0; +#ifndef XEN /* * physmap is in bytes, so when converting to page boundaries, * round up the start address and round down the end address. @@ -2240,7 +2295,11 @@ } *pte = 0; invltlb(); - +#else + phys_avail[0] = physfree; + phys_avail[1] = xen_start_info->nr_pages*PAGE_SIZE; +#endif + /* * XXX * The last chunk must contain at least one page plus the message @@ -2265,6 +2324,246 @@ off); } +#ifdef XEN +#define MTOPSIZE (1<<(14 + PAGE_SHIFT)) + +void +init386(first) + int first; +{ + struct gate_descriptor *gdp; + unsigned long gdtmachpfn; + int error, gsel_tss, metadata_missing, x; + struct pcpu *pc; + struct callback_register event = { + .type = CALLBACKTYPE_event, + .address = {GSEL(GCODE_SEL, SEL_KPL), (unsigned long)Xhypervisor_callback }, + }; + struct callback_register failsafe = { + .type = CALLBACKTYPE_failsafe, + .address = {GSEL(GCODE_SEL, SEL_KPL), (unsigned long)failsafe_callback }, + }; + + thread0.td_kstack = proc0kstack; + thread0.td_pcb = (struct pcb *) + (thread0.td_kstack + KSTACK_PAGES * PAGE_SIZE) - 1; + + /* + * This may be done better later if it gets more high level + * components in it. If so just link td->td_proc here. + */ + proc_linkup0(&proc0, &thread0); + + metadata_missing = 0; + if (xen_start_info->mod_start) { + preload_metadata = (caddr_t)xen_start_info->mod_start; + preload_bootstrap_relocate(KERNBASE); + } else { + metadata_missing = 1; + } + if (envmode == 1) + kern_envp = static_env; + else if (bootinfo.bi_envp) + kern_envp = (caddr_t)bootinfo.bi_envp + KERNBASE; + + /* Init basic tunables, hz etc */ + init_param1(); + + /* + * XEN occupies a portion of the upper virtual address space + * At its base it manages an array mapping machine page frames + * to physical page frames - hence we need to be able to + * access 4GB - (64MB - 4MB + 64k) + */ + gdt_segs[GPRIV_SEL].ssd_limit = atop(HYPERVISOR_VIRT_START + MTOPSIZE); + gdt_segs[GUFS_SEL].ssd_limit = atop(HYPERVISOR_VIRT_START + MTOPSIZE); + gdt_segs[GUGS_SEL].ssd_limit = atop(HYPERVISOR_VIRT_START + MTOPSIZE); + gdt_segs[GCODE_SEL].ssd_limit = atop(HYPERVISOR_VIRT_START + MTOPSIZE); + gdt_segs[GDATA_SEL].ssd_limit = atop(HYPERVISOR_VIRT_START + MTOPSIZE); + gdt_segs[GUCODE_SEL].ssd_limit = atop(HYPERVISOR_VIRT_START + MTOPSIZE); + gdt_segs[GUDATA_SEL].ssd_limit = atop(HYPERVISOR_VIRT_START + MTOPSIZE); + gdt_segs[GBIOSLOWMEM_SEL].ssd_limit = atop(HYPERVISOR_VIRT_START + MTOPSIZE); + gdt_segs[GCODE_SEL].ssd_limit = atop(0 - 1); + gdt_segs[GDATA_SEL].ssd_limit = atop(0 - 1); + gdt_segs[GUCODE_SEL].ssd_limit = atop(0 - 1); + gdt_segs[GUDATA_SEL].ssd_limit = atop(0 - 1); + gdt_segs[GUFS_SEL].ssd_limit = atop(0 - 1); + gdt_segs[GUGS_SEL].ssd_limit = atop(0 - 1); + + pc = &__pcpu[0]; + gdt_segs[GPRIV_SEL].ssd_base = (int) pc; + gdt_segs[GPROC0_SEL].ssd_base = (int) &pc->pc_common_tss; + + PT_SET_MA(gdt, xpmap_ptom(VTOP(gdt)) | PG_V | PG_RW); + bzero(gdt, PAGE_SIZE); + for (x = 0; x < NGDT; x++) + ssdtosd(&gdt_segs[x], &gdt[x].sd); + + mtx_init(&dt_lock, "descriptor tables", NULL, MTX_SPIN); + + gdtmachpfn = vtomach(gdt) >> PAGE_SHIFT; + PT_SET_MA(gdt, *vtopte((unsigned long)gdt) & ~(PG_RW|PG_M|PG_A)); + PANIC_IF(HYPERVISOR_set_gdt(&gdtmachpfn, 512) != 0); + lgdt(&r_gdt); + gdtset = 1; + + if ((error = HYPERVISOR_set_trap_table(trap_table)) != 0) { + panic("set_trap_table failed - error %d\n", error); + } + + error = HYPERVISOR_callback_op(CALLBACKOP_register, &event); + if (error == 0) + error = HYPERVISOR_callback_op(CALLBACKOP_register, &failsafe); +#if CONFIG_XEN_COMPAT <= 0x030002 + if (error == -ENOXENSYS) + HYPERVISOR_set_callbacks(GSEL(GCODE_SEL, SEL_KPL), + (unsigned long)Xhypervisor_callback, + GSEL(GCODE_SEL, SEL_KPL), (unsigned long)failsafe_callback); +#endif + pcpu_init(pc, 0, sizeof(struct pcpu)); + PCPU_SET(prvspace, pc); + PCPU_SET(curthread, &thread0); + PCPU_SET(curpcb, thread0.td_pcb); + + /* + * Initialize mutexes. + * + * icu_lock: in order to allow an interrupt to occur in a critical + * section, to set pcpu->ipending (etc...) properly, we + * must be able to get the icu lock, so it can't be + * under witness. + */ + mutex_init(); + mtx_init(&icu_lock, "icu", NULL, MTX_SPIN | MTX_NOWITNESS | MTX_NOPROFILE); + + /* make ldt memory segments */ + ldt_segs[LUCODE_SEL].ssd_limit = atop(0 - 1); + ldt_segs[LUDATA_SEL].ssd_limit = atop(0 - 1); + for (x = 0; x < sizeof ldt_segs / sizeof ldt_segs[0]; x++) + ssdtosd(&ldt_segs[x], &ldt[x].sd); + + default_proc_ldt.ldt_base = (caddr_t)ldt; + default_proc_ldt.ldt_len = 6; + _default_ldt = (int)&default_proc_ldt; + PCPU_SET(currentldt, _default_ldt) + PT_SET_MA(ldt, *vtopte((unsigned long)ldt) & ~PG_RW); + xen_set_ldt((unsigned long) ldt, (sizeof ldt_segs / sizeof ldt_segs[0])); + +#if defined(XEN_PRIVILEGED) + /* + * Initialize the i8254 before the console so that console + * initialization can use DELAY(). + */ + i8254_init(); +#endif + + /* + * Initialize the console before we print anything out. + */ + cninit(); + + if (metadata_missing) + printf("WARNING: loader(8) metadata is missing!\n"); + +#ifdef DEV_ISA + elcr_probe(); + atpic_startup(); +#endif + +#ifdef DDB + ksym_start = bootinfo.bi_symtab; + ksym_end = bootinfo.bi_esymtab; +#endif + + kdb_init(); + +#ifdef KDB + if (boothowto & RB_KDB) + kdb_enter(KDB_WHY_BOOTFLAGS, "Boot flags requested debugger"); +#endif + + finishidentcpu(); /* Final stage of CPU initialization */ + setidt(IDT_UD, &IDTVEC(ill), SDT_SYS386TGT, SEL_KPL, + GSEL(GCODE_SEL, SEL_KPL)); + setidt(IDT_GP, &IDTVEC(prot), SDT_SYS386TGT, SEL_KPL, + GSEL(GCODE_SEL, SEL_KPL)); + initializecpu(); /* Initialize CPU registers */ + + /* make an initial tss so cpu can get interrupt stack on syscall! */ + /* Note: -16 is so we can grow the trapframe if we came from vm86 */ + PCPU_SET(common_tss.tss_esp0, thread0.td_kstack + + KSTACK_PAGES * PAGE_SIZE - sizeof(struct pcb) - 16); + PCPU_SET(common_tss.tss_ss0, GSEL(GDATA_SEL, SEL_KPL)); + gsel_tss = GSEL(GPROC0_SEL, SEL_KPL); + PCPU_SET(tss_gdt, &gdt[GPROC0_SEL].sd); + PCPU_SET(common_tssd, *PCPU_GET(tss_gdt)); + PCPU_SET(common_tss.tss_ioopt, (sizeof (struct i386tss)) << 16); + ltr(gsel_tss); + + /* pointer to selector slot for %fs/%gs */ + PCPU_SET(fsgs_gdt, &gdt[GUFS_SEL].sd); + + dblfault_tss.tss_esp = dblfault_tss.tss_esp0 = dblfault_tss.tss_esp1 = + dblfault_tss.tss_esp2 = (int)&dblfault_stack[sizeof(dblfault_stack)]; + dblfault_tss.tss_ss = dblfault_tss.tss_ss0 = dblfault_tss.tss_ss1 = + dblfault_tss.tss_ss2 = GSEL(GDATA_SEL, SEL_KPL); +#ifdef PAE + dblfault_tss.tss_cr3 = (int)IdlePDPT; +#else + dblfault_tss.tss_cr3 = (int)IdlePTD; +#endif + dblfault_tss.tss_eip = (int)dblfault_handler; + dblfault_tss.tss_eflags = PSL_KERNEL; + dblfault_tss.tss_ds = dblfault_tss.tss_es = + dblfault_tss.tss_gs = GSEL(GDATA_SEL, SEL_KPL); + dblfault_tss.tss_fs = GSEL(GPRIV_SEL, SEL_KPL); + dblfault_tss.tss_cs = GSEL(GCODE_SEL, SEL_KPL); + dblfault_tss.tss_ldt = GSEL(GLDT_SEL, SEL_KPL); + + vm86_initialize(); + getmemsize(first); + init_param2(physmem); + + /* now running on new page tables, configured,and u/iom is accessible */ + + msgbufinit(msgbufp, MSGBUF_SIZE); + + /* make a call gate to reenter kernel with */ + gdp = &ldt[LSYS5CALLS_SEL].gd; + + x = (int) &IDTVEC(lcall_syscall); + gdp->gd_looffset = x; + gdp->gd_selector = GSEL(GCODE_SEL,SEL_KPL); + gdp->gd_stkcpy = 1; + gdp->gd_type = SDT_SYS386CGT; + gdp->gd_dpl = SEL_UPL; + gdp->gd_p = 1; + gdp->gd_hioffset = x >> 16; + + /* XXX does this work? */ + /* XXX yes! */ + ldt[LBSDICALLS_SEL] = ldt[LSYS5CALLS_SEL]; + ldt[LSOL26CALLS_SEL] = ldt[LSYS5CALLS_SEL]; + + /* transfer to user mode */ + + _ucodesel = GSEL(GUCODE_SEL, SEL_UPL); + _udatasel = GSEL(GUDATA_SEL, SEL_UPL); + + /* setup proc 0's pcb */ + thread0.td_pcb->pcb_flags = 0; +#ifdef PAE + thread0.td_pcb->pcb_cr3 = (int)IdlePDPT; +#else + thread0.td_pcb->pcb_cr3 = (int)IdlePTD; +#endif + thread0.td_pcb->pcb_ext = 0; + thread0.td_frame = &proc0_tf; + thread0.td_pcb->pcb_fsd = PCPU_GET(fsgs_gdt)[0]; + thread0.td_pcb->pcb_gsd = PCPU_GET(fsgs_gdt)[1]; +} + +#else void init386(first) int first; @@ -2527,6 +2826,7 @@ thread0.td_pcb->pcb_ext = 0; thread0.td_frame = &proc0_tf; } +#endif void cpu_pcpu_init(struct pcpu *pcpu, int cpuid, size_t size) ==== //depot/projects/vimage-devel/src/sys/i386/i386/support.s#3 (text+ko) ==== @@ -26,7 +26,7 @@ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. * - * $FreeBSD: src/sys/i386/i386/support.s,v 1.120 2008/08/08 16:26:53 stas Exp $ + * $FreeBSD: src/sys/i386/i386/support.s,v 1.121 2008/08/15 20:51:31 kmacy Exp $ */ #include "opt_npx.h" @@ -1459,10 +1459,12 @@ */ /* void lgdt(struct region_descriptor *rdp); */ ENTRY(lgdt) +#ifndef XEN /* reload the descriptor table */ movl 4(%esp),%eax lgdt (%eax) - +#endif + /* flush the prefetch q */ jmp 1f nop ==== //depot/projects/vimage-devel/src/sys/i386/i386/sys_machdep.c#2 (text+ko) ==== @@ -30,7 +30,7 @@ */ #include <sys/cdefs.h> -__FBSDID("$FreeBSD: src/sys/i386/i386/sys_machdep.c,v 1.113 2008/03/12 10:11:57 jeff Exp $"); +__FBSDID("$FreeBSD: src/sys/i386/i386/sys_machdep.c,v 1.114 2008/08/15 20:51:31 kmacy Exp $"); #include "opt_kstack_pages.h" #include "opt_mac.h" @@ -58,6 +58,20 @@ #include <security/audit/audit.h> +#ifdef XEN +#include <machine/xen/xenfunc.h> + +void i386_reset_ldt(struct proc_ldt *pldt); + +void +i386_reset_ldt(struct proc_ldt *pldt) +{ + xen_set_ldt((vm_offset_t)pldt->ldt_base, pldt->ldt_len); +} +#else +#define i386_reset_ldt(x) +#endif + #include <vm/vm_kern.h> /* for kernel_map */ #define MAX_LD 8192 @@ -164,7 +178,12 @@ */ sd.sd_lobase = base & 0xffffff; sd.sd_hibase = (base >> 24) & 0xff; +#ifdef XEN + /* need to do nosegneg like Linux */ + sd.sd_lolimit = (HYPERVISOR_VIRT_START >> 12) & 0xffff; +#else sd.sd_lolimit = 0xffff; /* 4GB limit, wraps around */ +#endif sd.sd_hilimit = 0xf; sd.sd_type = SDT_MEMRWA; sd.sd_dpl = SEL_UPL; @@ -174,7 +193,12 @@ sd.sd_gran = 1; critical_enter(); td->td_pcb->pcb_fsd = sd; +#ifdef XEN + HYPERVISOR_update_descriptor(vtomach(&PCPU_GET(fsgs_gdt)[0]), + *(uint64_t *)&sd); +#else PCPU_GET(fsgs_gdt)[0] = sd; +#endif critical_exit(); td->td_frame->tf_fs = GSEL(GUFS_SEL, SEL_UPL); } @@ -194,7 +218,13 @@ */ sd.sd_lobase = base & 0xffffff; sd.sd_hibase = (base >> 24) & 0xff; + +#ifdef XEN + /* need to do nosegneg like Linux */ + sd.sd_lolimit = (HYPERVISOR_VIRT_START >> 12) & 0xffff; +#else sd.sd_lolimit = 0xffff; /* 4GB limit, wraps around */ +#endif sd.sd_hilimit = 0xf; sd.sd_type = SDT_MEMRWA; sd.sd_dpl = SEL_UPL; @@ -204,7 +234,12 @@ sd.sd_gran = 1; critical_enter(); td->td_pcb->pcb_gsd = sd; +#ifdef XEN + HYPERVISOR_update_descriptor(vtomach(&PCPU_GET(fsgs_gdt)[1]), + *(uint64_t *)&sd); +#else PCPU_GET(fsgs_gdt)[1] = sd; +#endif critical_exit(); load_gs(GSEL(GUGS_SEL, SEL_UPL)); } @@ -360,6 +395,10 @@ } pldt = mdp->md_ldt; +#ifdef XEN + i386_reset_ldt(pldt); + PCPU_SET(currentldt, (int)pldt); +#else #ifdef SMP gdt[PCPU_GET(cpuid) * NGDT + GUSERLDT_SEL].sd = pldt->ldt_sd; #else @@ -367,6 +406,7 @@ #endif lldt(GSEL(GUSERLDT_SEL, SEL_KPL)); PCPU_SET(currentldt, GSEL(GUSERLDT_SEL, SEL_KPL)); +#endif /* XEN */ if (dtlocked) mtx_unlock_spin(&dt_lock); } @@ -385,6 +425,44 @@ } #endif +#ifdef XEN + +/* + * dt_lock must be held. Returns with dt_lock held. + */ +struct proc_ldt * +user_ldt_alloc(struct mdproc *mdp, int len) +{ + struct proc_ldt *pldt, *new_ldt; + + mtx_assert(&dt_lock, MA_OWNED); + mtx_unlock_spin(&dt_lock); + MALLOC(new_ldt, struct proc_ldt *, sizeof(struct proc_ldt), + M_SUBPROC, M_WAITOK); + + new_ldt->ldt_len = len = NEW_MAX_LD(len); + new_ldt->ldt_base = (caddr_t)kmem_alloc(kernel_map, + round_page(len * sizeof(union descriptor))); + if (new_ldt->ldt_base == NULL) { + FREE(new_ldt, M_SUBPROC); + return NULL; + } + new_ldt->ldt_refcnt = 1; + new_ldt->ldt_active = 0; + + if ((pldt = mdp->md_ldt)) { + if (len > pldt->ldt_len) + len = pldt->ldt_len; + bcopy(pldt->ldt_base, new_ldt->ldt_base, + len * sizeof(union descriptor)); + } else { + bcopy(ldt, new_ldt->ldt_base, PAGE_SIZE); + } + pmap_map_readonly(kernel_pmap, (vm_offset_t)new_ldt->ldt_base, + new_ldt->ldt_len*sizeof(union descriptor)); + return new_ldt; +} +#else /* * dt_lock must be held. Returns with dt_lock held. */ @@ -423,6 +501,7 @@ return (new_ldt); } +#endif /* !XEN */ /* * Must be called with dt_lock held. Returns with dt_lock unheld. @@ -667,7 +746,23 @@ td->td_retval[0] = uap->start; return (error); } +#ifdef XEN +static int +i386_set_ldt_data(struct thread *td, int start, int num, + union descriptor *descs) +{ + struct mdproc *mdp = &td->td_proc->p_md; + struct proc_ldt *pldt = mdp->md_ldt; + + mtx_assert(&dt_lock, MA_OWNED); + /* Fill in range */ + bcopy(descs, + &((union descriptor *)(pldt->ldt_base))[start], + num * sizeof(union descriptor)); + return (0); +} +#else static int i386_set_ldt_data(struct thread *td, int start, int num, union descriptor *descs) @@ -683,6 +778,7 @@ num * sizeof(union descriptor)); return (0); } +#endif /* !XEN */ static int i386_ldt_grow(struct thread *td, int len) >>> TRUNCATED FOR MAIL (1000 lines) <<<
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