Rusty Russell 78be3706b2 [PATCH] i386: Allow a kernel not to be in ring 0 ...

We allow for the fact that the guest kernel may not run in ring 0.  This
requires some abstraction in a few places when setting %cs or checking
privilege level (user vs kernel).

This is Chris' [RFC PATCH 15/33] move segment checks to subarch, except rather
than using #define USER_MODE_MASK which depends on a config option, we use
Zach's more flexible approach of assuming ring 3 == userspace.  I also used
"get_kernel_rpl()" over "get_kernel_cs()" because I think it reads better in
the code...

1) Remove the hardcoded 3 and introduce #define SEGMENT_RPL_MASK 3 2) Add a
get_kernel_rpl() macro, and don't assume it's zero.

And:

Clean up of patch for letting kernel run other than ring 0:

a. Add some comments about the SEGMENT_IS_*_CODE() macros.
b. Add a USER_RPL macro.  (Code was comparing a value to a mask
   in some places and to the magic number 3 in other places.)
c. Add macros for table indicator field and use them.
d. Change the entry.S tests for LDT stack segment to use the macros

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Signed-off-by: Zachary Amsden <zach@vmware.com>
Signed-off-by: Jeremy Fitzhardinge <jeremy@xensource.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Andi Kleen <ak@suse.de>

2006-09-26 10:52:39 +02:00

..

mach-bigsmp

[PATCH] x86: convert bigsmp to use flat physical mode

2006-01-06 08:33:37 -08:00

mach-default

[PATCH] x86: increase MAX_MP_BUSSES on default arch

2006-09-01 11:39:08 -07:00

mach-es7000

[PATCH] i386: Allow to use GENERICARCH for UP kernels

2006-09-26 10:52:26 +02:00

mach-generic

[PATCH] x86: sutomatically enable bigsmp when we have more than 8 CPUs

2005-09-05 00:06:10 -07:00

mach-numaq

[PATCH] Do not enforce unique IO_APIC_ID check for xAPIC systems (i386)

2005-06-23 09:45:09 -07:00

mach-summit

[PATCH] i386: Allow to use GENERICARCH for UP kernels

2006-09-26 10:52:26 +02:00

mach-visws

[PATCH] fix sgivwfb compile

2006-06-29 10:26:19 -07:00

mach-voyager

[PATCH] Clean up and refactor i386 sub-architecture setup

2006-06-25 10:00:55 -07:00

8253pit.h

Linux-2.6.12-rc2

2005-04-16 15:20:36 -07:00

a.out.h

Linux-2.6.12-rc2

2005-04-16 15:20:36 -07:00

acpi.h

[PATCH] i386: Replace i386 open-coded cmdline parsing with

2006-09-26 10:52:32 +02:00

agp.h

[PATCH] i386: inline asm cleanup

2005-09-05 00:06:11 -07:00

alternative-asm.i

[PATCH] i386: add alternative-asm.h to allow LOCK_PREFIX replacement in .S files

2006-09-26 10:52:29 +02:00

alternative.h

[PATCH] i386: Remove alternative_smp

2006-08-30 16:05:15 -07:00

apic.h

[PATCH] i386: Make enable_local_apic static

2006-09-26 10:52:35 +02:00

apicdef.h

x86_64: Remove stale lapic definition from apicdef.h

2006-04-01 22:50:03 -05:00

arch_hooks.h

[PATCH] x86: early printk handling fixes

2006-03-23 07:38:05 -08:00

atomic.h

i386: improve and correct inline asm memory constraints

2006-07-08 15:24:18 -07:00

auxvec.h

[PATCH] auxiliary vector cleanups

2005-09-07 16:57:21 -07:00

bitops.h

Don't include linux/config.h from anywhere else in include/

2006-04-26 12:56:16 +01:00

boot.h

Linux-2.6.12-rc2

2005-04-16 15:20:36 -07:00

bug.h

Don't include linux/config.h from anywhere else in include/

2006-04-26 12:56:16 +01:00

bugs.h

Don't include linux/config.h from anywhere else in include/

2006-04-26 12:56:16 +01:00

byteorder.h

Don't include linux/config.h from anywhere else in include/

2006-04-26 12:56:16 +01:00

cache.h

Don't include linux/config.h from anywhere else in include/

2006-04-26 12:56:16 +01:00

cacheflush.h

[PATCH] x86/x86_64: mark rodata section read only: x86 parts

2006-01-06 08:33:36 -08:00

checksum.h

[NET]: Fix ipl=>ihl typo in ip_fast_csum

2005-08-29 16:02:48 -07:00

cpu.h

[PATCH] Register sysfs file for hotplugged new node

2006-06-27 17:32:36 -07:00

cpufeature.h

[PATCH] x86_64: i386/x86-64 Add nmi watchdog support for new Intel CPUs

2006-06-26 10:48:22 -07:00

cputime.h

Linux-2.6.12-rc2

2005-04-16 15:20:36 -07:00

current.h

[PATCH] mark several functions __always_inline

2006-01-14 18:27:15 -08:00

debugreg.h

Linux-2.6.12-rc2

2005-04-16 15:20:36 -07:00

delay.h

[PATCH] Time: i386 Conversion - part 3: Enable Generic Timekeeping

2006-06-26 09:58:21 -07:00

desc.h

[PATCH] i386: Descriptor and trap table cleanups.

2006-09-26 10:52:35 +02:00

div64.h

[PATCH] include/asm-i386/: "extern inline" -> "static inline"

2005-09-10 10:06:34 -07:00

dma-mapping.h

[PATCH] i386: make pci_map_single/pci_map_sg warn for zero length.

2006-01-11 19:04:56 -08:00

dma.h

Don't include linux/config.h from anywhere else in include/

2006-04-26 12:56:16 +01:00

dmi.h

[PATCH] x86_64: Implement early DMI scanning

2006-03-25 09:10:55 -08:00

dwarf2.h

[PATCH] i386: annotate FIX_STACK() and the rest of nmi()

2006-09-26 10:52:37 +02:00

e820.h

[PATCH] x86: Remove incorrect comment about ACPI e820 entries

2006-09-26 10:52:38 +02:00

edac.h

[PATCH] EDAC: core EDAC support code

2006-01-18 19:20:31 -08:00

elf.h

[PATCH] headers_check: move kernel-only #includes within <asm-i386/elf.h>

2006-09-13 07:32:15 -07:00

emergency-restart.h

[PATCH] i386: Implement machine_emergency_reboot

2005-07-26 14:35:42 -07:00

errno.h

Linux-2.6.12-rc2

2005-04-16 15:20:36 -07:00

fcntl.h

[PATCH] Clean up struct flock64 definitions

2005-09-07 16:57:38 -07:00

fixmap.h

[PATCH] vdso: randomize the i386 vDSO by moving it into a vma

2006-06-27 17:32:38 -07:00

floppy.h

[PATCH] irq-flags: i386: Use the new IRQF_ constants

2006-07-02 13:58:47 -07:00

frame.i

[PATCH] i386: Redo semaphore and rwlock assembly helpers

2006-09-26 10:52:29 +02:00

futex.h

i386: improve and correct inline asm memory constraints

2006-07-08 15:24:18 -07:00

genapic.h

[PATCH] i386: Allow to use GENERICARCH for UP kernels

2006-09-26 10:52:26 +02:00

hardirq.h

Don't include linux/config.h from anywhere else in include/

2006-04-26 12:56:16 +01:00

highmem.h

Don't include linux/config.h from anywhere else in include/

2006-04-26 12:56:16 +01:00

hpet.h

Don't include linux/config.h from anywhere else in include/

2006-04-26 12:56:16 +01:00

hw_irq.h

[PATCH] genirq: add ->retrigger() irq op to consolidate hw_irq_resend()

2006-06-29 10:26:23 -07:00

i387.h

[PATCH] i386: fix broken FP exception handling

2006-04-29 14:13:16 -07:00

i8253.h

[PATCH] x86: i8253/i8259A lock cleanup

2005-06-30 08:45:10 -07:00

i8259.h

Linux-2.6.12-rc2

2005-04-16 15:20:36 -07:00

ide.h

Don't include linux/config.h from anywhere else in include/

2006-04-26 12:56:16 +01:00

intel_arch_perfmon.h

[PATCH] x86: i386/x86-64 Add nmi watchdog support for new Intel CPUs

2006-09-26 10:52:27 +02:00

io_apic.h

[PATCH] i386: Replace i386 open-coded cmdline parsing with

2006-09-26 10:52:32 +02:00

io.h

Don't include linux/config.h from anywhere else in include/

2006-04-26 12:56:16 +01:00

ioctl.h

[PATCH] Generic ioctl.h

2006-01-10 08:01:34 -08:00

ioctls.h

Linux-2.6.12-rc2

2005-04-16 15:20:36 -07:00

ipc.h

Linux-2.6.12-rc2

2005-04-16 15:20:36 -07:00

ipcbuf.h

Linux-2.6.12-rc2

2005-04-16 15:20:36 -07:00

irq.h

Don't include linux/config.h from anywhere else in include/

2006-04-26 12:56:16 +01:00

irqflags.h

[PATCH] lockdep: irqtrace cleanup of include/asm-i386/irqflags.h

2006-07-03 15:27:03 -07:00

ist.h

Linux-2.6.12-rc2

2005-04-16 15:20:36 -07:00

k8.h

[PATCH] x86_64: Clean and enhance up K8 northbridge access code

2006-06-26 10:48:15 -07:00

Kbuild

[HEADERS] One line per header in Kbuild files to reduce conflicts

2006-09-19 12:43:58 +01:00

kdebug.h

[PATCH] Notify page fault call chain for i386

2006-06-26 09:58:22 -07:00

kexec.h

[PATCH] i386: Avoid overwriting the current pgd (V4, i386)

2006-09-26 10:52:38 +02:00

kmap_types.h

Don't include linux/config.h from anywhere else in include/

2006-04-26 12:56:16 +01:00

kprobes.h

[PATCH] IA64: kprobe invalidate icache of jump buffer

2006-07-31 13:28:38 -07:00

ldt.h

Linux-2.6.12-rc2

2005-04-16 15:20:36 -07:00

linkage.h

[PATCH] i386: fix prevent_tail_call

2005-05-26 16:16:16 -07:00

local.h

i386: improve and correct inline asm memory constraints

2006-07-08 15:24:18 -07:00

math_emu.h

Linux-2.6.12-rc2

2005-04-16 15:20:36 -07:00

mc146818rtc.h

Linux-2.6.12-rc2

2005-04-16 15:20:36 -07:00

mca_dma.h

Linux-2.6.12-rc2

2005-04-16 15:20:36 -07:00

mca.h

Linux-2.6.12-rc2

2005-04-16 15:20:36 -07:00

mce.h

[PATCH] Don't trigger full rebuild via CONFIG_X86_MCE

2006-06-23 07:42:56 -07:00

mman.h

[PATCH] add asm-generic/mman.h

2006-02-15 15:32:22 -08:00

mmu_context.h

Don't include linux/config.h from anywhere else in include/

2006-04-26 12:56:16 +01:00

mmu.h

[PATCH] vdso: randomize the i386 vDSO by moving it into a vma

2006-06-27 17:32:38 -07:00

mmx.h

Linux-2.6.12-rc2

2005-04-16 15:20:36 -07:00

mmzone.h

[PATCH] CONFIG_ACPI_SRAT NUMA build fix

2006-08-27 11:01:32 -07:00

module.h

[PATCH] Base support for AMD Geode GX/LX processors

2006-01-06 08:33:38 -08:00

mpspec_def.h

[PATCH] mpspec: remove unneeded packed attribute

2006-01-06 08:33:39 -08:00

mpspec.h

[PATCH] mptspec: remove duplicate #include

2006-04-11 06:18:34 -07:00

msgbuf.h

Linux-2.6.12-rc2

2005-04-16 15:20:36 -07:00

msi.h

[PATCH] PCI: cleanup unused variable about msi driver

2006-06-21 12:00:00 -07:00

msr.h

[PATCH] x86: more asm cleanups

2005-09-05 00:06:12 -07:00

mtrr.h

[PATCH] Don't trigger full rebuild via CONFIG_MTRR

2006-06-23 07:42:56 -07:00

mutex.h

[PATCH] i386: Remove lock section support in mutex.h

2006-09-26 10:52:31 +02:00

namei.h

Linux-2.6.12-rc2

2005-04-16 15:20:36 -07:00

nmi.h

[PATCH] i386/x86-64: Fix NMI watchdog suspend/resume

2006-09-26 10:52:27 +02:00

numa.h

[PATCH] x86-64: Use ACPI PXM to parse PCI<->node assignments

2005-09-12 10:49:57 -07:00

numaq.h

Linux-2.6.12-rc2

2005-04-16 15:20:36 -07:00

page.h

[PATCH] vdso: randomize the i386 vDSO by moving it into a vma

2006-06-27 17:32:38 -07:00

param.h

Don't include linux/config.h from anywhere else in include/

2006-04-26 12:56:16 +01:00

parport.h

Linux-2.6.12-rc2

2005-04-16 15:20:36 -07:00

pci-direct.h

Linux-2.6.12-rc2

2005-04-16 15:20:36 -07:00

pci.h

Don't include linux/config.h from anywhere else in include/

2006-04-26 12:56:16 +01:00

percpu.h

Linux-2.6.12-rc2

2005-04-16 15:20:36 -07:00

pgalloc.h

Don't include linux/config.h from anywhere else in include/

2006-04-26 12:56:16 +01:00

pgtable-2level-defs.h

Linux-2.6.12-rc2

2005-04-16 15:20:36 -07:00

pgtable-2level.h

[PATCH] x86/PAE: Fix pte_clear for the >4GB RAM case

2006-04-27 12:00:59 -07:00

pgtable-3level-defs.h

Linux-2.6.12-rc2

2005-04-16 15:20:36 -07:00

pgtable-3level.h

[PATCH] x86/PAE: Fix pte_clear for the >4GB RAM case

2006-04-27 12:00:59 -07:00

pgtable.h

[PATCH] i386: Replace i386 open-coded cmdline parsing with

2006-09-26 10:52:32 +02:00

poll.h

[PATCH] POLLRDHUP/EPOLLRDHUP handling for half-closed devices notifications

2006-03-25 08:22:56 -08:00

posix_types.h

i386: improve and correct inline asm memory constraints

2006-07-08 15:24:18 -07:00

processor.h

[PATCH] i386: move phys_proc_id and cpu_core_id to cpuinfo_x86

2006-06-27 17:32:37 -07:00

ptrace.h

[PATCH] i386: Allow a kernel not to be in ring 0

2006-09-26 10:52:39 +02:00

resource.h

Linux-2.6.12-rc2

2005-04-16 15:20:36 -07:00

rtc.h

Linux-2.6.12-rc2

2005-04-16 15:20:36 -07:00

rwlock.h

[PATCH] i386: Clean up spin/rwlocks

2006-09-26 10:52:32 +02:00

rwsem.h

[PATCH] i386: Remove lock section support in rwsem.h

2006-09-26 10:52:31 +02:00

scatterlist.h

Linux-2.6.12-rc2

2005-04-16 15:20:36 -07:00

seccomp.h

Linux-2.6.12-rc2

2005-04-16 15:20:36 -07:00

sections.h

Linux-2.6.12-rc2

2005-04-16 15:20:36 -07:00

segment.h

[PATCH] i386: Allow a kernel not to be in ring 0

2006-09-26 10:52:39 +02:00

semaphore.h

[PATCH] i386: Remove lock section support in semaphore.h

2006-09-26 10:52:32 +02:00

sembuf.h

Linux-2.6.12-rc2

2005-04-16 15:20:36 -07:00

serial.h

Don't include linux/config.h from anywhere else in include/

2006-04-26 12:56:16 +01:00

setup.h

[PATCH] headers_check: don't expose PFN stuff to userspace in <asm-i386/setup.h>

2006-09-13 07:32:16 -07:00

shmbuf.h

Linux-2.6.12-rc2

2005-04-16 15:20:36 -07:00

shmparam.h

Linux-2.6.12-rc2

2005-04-16 15:20:36 -07:00

sigcontext.h

Linux-2.6.12-rc2

2005-04-16 15:20:36 -07:00

siginfo.h

Linux-2.6.12-rc2

2005-04-16 15:20:36 -07:00

signal.h

[PATCH] headers_check: move inclusion of <linux/linkage.h> in <asm-i386/signal.h>

2006-09-13 07:32:15 -07:00

smp.h

[PATCH] i386: Support physical cpu hotplug for x86_64

2006-09-26 10:52:35 +02:00

socket.h

[AF_UNIX]: Datagram getpeersec

2006-06-29 16:58:06 -07:00

sockios.h

Linux-2.6.12-rc2

2005-04-16 15:20:36 -07:00

sparsemem.h

[PATCH] sparsemem memory model for i386

2005-06-23 09:45:05 -07:00

spinlock_types.h

[PATCH] spinlock consolidation

2005-09-10 10:06:21 -07:00

spinlock.h

[PATCH] i386: Abstract sensitive instructions

2006-09-26 10:52:39 +02:00

srat.h

Linux-2.6.12-rc2

2005-04-16 15:20:36 -07:00

stacktrace.h

[PATCH] i386: Do stacktracer conversion too

2006-09-26 10:52:34 +02:00

stat.h

[PATCH] 2TB files: st_blocks is invalid when calling stat64

2006-03-26 08:57:00 -08:00

statfs.h

Linux-2.6.12-rc2

2005-04-16 15:20:36 -07:00

string.h

Don't include linux/config.h from anywhere else in include/

2006-04-26 12:56:16 +01:00

suspend.h

[PATCH] i386: Use loaddebug macro consistently

2005-04-16 15:24:46 -07:00

system.h

x86: save/restore eflags in context switch

2006-09-18 16:20:40 -07:00

termbits.h

Linux-2.6.12-rc2

2005-04-16 15:20:36 -07:00

termios.h

Linux-2.6.12-rc2

2005-04-16 15:20:36 -07:00

thread_info.h

[PATCH] i386: use thread_info flags for debug regs and IO bitmaps

2006-07-09 18:47:12 -07:00

timer.h

[PATCH] Time: i386 Conversion - part 3: Enable Generic Timekeeping

2006-06-26 09:58:21 -07:00

timex.h

[PATCH] Time: i386 Conversion - part 2: Rework TSC Support

2006-06-26 09:58:21 -07:00

tlb.h

Linux-2.6.12-rc2

2005-04-16 15:20:36 -07:00

tlbflush.h

[PATCH] i386: Minor fixes & cleanup to tlb flush

2006-09-26 10:52:29 +02:00

topology.h

[PATCH] sched: mc/smt power savings sched policy

2006-06-27 17:32:45 -07:00

tsc.h

[PATCH] x86: remove config.h includes from asm-i386 & asm-x86_64

2006-09-26 10:52:36 +02:00

types.h

Don't include linux/config.h from anywhere else in include/

2006-04-26 12:56:16 +01:00

uaccess.h

[PATCH] Make copy_from_user_inatomic NOT zero the tail on i386

2006-06-25 10:01:09 -07:00

ucontext.h

Linux-2.6.12-rc2

2005-04-16 15:20:36 -07:00

unaligned.h

Linux-2.6.12-rc2

2005-04-16 15:20:36 -07:00

unistd.h

[PATCH] x86: Add portable getcpu call

2006-09-26 10:52:28 +02:00

unwind.h

[PATCH] i386: Get ebp from unwinder state when continuing fallback backtrace

2006-09-26 10:52:34 +02:00

user.h

Linux-2.6.12-rc2

2005-04-16 15:20:36 -07:00

vga.h

[PATCH] vgacon: make VGA_MAP_MEM take size, remove extra use

2006-06-22 15:05:58 -07:00

vic.h

Linux-2.6.12-rc2

2005-04-16 15:20:36 -07:00

vm86.h

[PATCH] Make vm86 support optional

2006-01-08 20:14:11 -08:00

voyager.h

Linux-2.6.12-rc2

2005-04-16 15:20:36 -07:00

xor.h

[PATCH] i386: inline asm cleanup

2005-09-05 00:06:11 -07:00