linux_dsm_epyc7002/arch/x86
Rusty Russell 4357bd9453 lguest: Revert 1ce70c4fac, fix real problem.
Ahmed managed to crash the Host in release_pgd(), which cannot be a Guest
bug, and indeed it wasn't.

The bug was that handing a 0 as the address of the toplevel page table
being manipulated can cause the lookup code in find_pgdir() to return
an uninitialized cache entry (we shadow up to 4 top level page tables
for each Guest).

Commit 37cc8d7f96 introduced this
behaviour in the Guest, uncovering the bug.

The patch which he submitted (which removed the /4 from the index
calculation) simply ensured that these high-indexed entries hit the
early exit path of guest_set_pmd().  But you get lots of segfaults in
guest userspace as the PMDs aren't being updated.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
2008-03-11 09:35:58 +11:00
..
boot x86-boot: don't request VBE2 information 2008-03-07 16:39:14 +01:00
configs x86, core: remove CONFIG_FORCED_INLINING 2008-02-09 23:24:09 +01:00
crypto [CRYPTO] twofish: Merge common glue code 2008-01-14 17:07:57 +11:00
ia32 x86: clear DF before calling signal handler 2008-03-07 16:39:14 +01:00
kernel x86_64: make ptrace always sign-extend orig_ax to 64 bits 2008-03-07 19:05:58 -08:00
kvm KVM: VMX: Avoid rearranging switched guest msrs while they are loaded 2008-03-04 15:19:50 +02:00
lguest lguest: Revert 1ce70c4fac, fix real problem. 2008-03-11 09:35:58 +11:00
lib x86: clean up csum-wrappers_64.c some more 2008-02-19 16:18:32 +01:00
mach-default spelling fixes: arch/i386/ 2007-10-20 01:13:56 +02:00
mach-es7000 i386: es7000 minor cleanups 2007-10-17 20:16:15 +02:00
mach-generic spelling fixes: arch/i386/ 2007-10-20 01:13:56 +02:00
mach-rdc321x x86: add support for the RDC R-321x SoC 2008-01-30 13:33:36 +01:00
mach-visws x86: cleanup mpspec variants 2008-01-30 13:30:35 +01:00
mach-voyager calibrate_delay() must be __cpuinit 2008-02-06 10:41:08 -08:00
math-emu x86: arch/x86/math-emu/errors.c: fix printk warnings 2008-01-30 13:32:13 +01:00
mm x86: not set node to cpu_to_node if the node is not online 2008-03-04 17:10:12 +01:00
oprofile x86: rename stack_pointer to kernel_trap_sp 2008-01-30 13:33:16 +01:00
pci PCI: irq: patch for Intel ICH10 DeviceID's 2008-02-21 15:34:36 -08:00
power x86 cleanup: suspend_asm_64.S - use X86_CR4_PGE instead of numeric value 2008-02-19 16:18:33 +01:00
vdso x86 vdso: fix build locale dependency 2008-02-29 18:55:39 +01:00
video i386: move video 2007-10-11 11:16:56 +02:00
xen x86/xen: fix DomU boot problem 2008-03-04 17:10:12 +01:00
Kconfig Kprobes: indicate kretprobe support in Kconfig 2008-03-04 16:35:11 -08:00
Kconfig.cpu x86: a P4 is a P6 not an i486 2008-03-04 11:55:34 -08:00
Kconfig.debug x86: change IO delay back to 0x80 2008-02-19 16:18:34 +01:00
Makefile x86: fix vdso_install breaks user "make install" 2008-02-19 16:18:34 +01:00
Makefile_32.cpu x86: move i386 and x86_64 Makefiles to arch/x86 2007-10-25 22:27:34 +02:00