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Revision 4f350c6dbcb9000e18907515ec8a7b205ac33c69 authored by Jim Mattson on 14 September 2017, 23:31:44 UTC, committed by Paolo Bonzini on 15 September 2017, 14:57:15 UTC 
kvm: nVMX: Handle deferred early VMLAUNCH/VMRESUME failure properly
 
When emulating a nested VM-entry from L1 to L2, several control field
validation checks are deferred to the hardware. Should one of these
validation checks fail, vcpu_vmx_run will set the vmx->fail flag. When
this happens, the L2 guest state is not loaded (even in part), and
execution should continue in L1 with the next instruction after the
VMLAUNCH/VMRESUME.

The VMCS12 is not modified (except for the VM-instruction error
field), the VMCS12 MSR save/load lists are not processed, and the CPU
state is not loaded from the VMCS12 host area. Moreover, the vmcs02
exit reason is stale, so it should not be consulted for any reason.

Signed-off-by: Jim Mattson <jmattson@google.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
1 parent b060ca3
Raw File
Makefile 
#
# ia64/Makefile
#
# This file is included by the global makefile so that you can add your own
# architecture-specific flags and dependencies.
#
# This file is subject to the terms and conditions of the GNU General Public
# License.  See the file "COPYING" in the main directory of this archive
# for more details.
#
# Copyright (C) 1998-2004 by David Mosberger-Tang <davidm@hpl.hp.com>
#

KBUILD_DEFCONFIG := generic_defconfig

NM := $(CROSS_COMPILE)nm -B
READELF := $(CROSS_COMPILE)readelf

export AWK

CHECKFLAGS	+= -m64 -D__ia64=1 -D__ia64__=1 -D_LP64 -D__LP64__

OBJCOPYFLAGS	:= --strip-all
LDFLAGS_vmlinux	:= -static
KBUILD_LDFLAGS_MODULE += -T $(srctree)/arch/ia64/module.lds
KBUILD_AFLAGS_KERNEL := -mconstant-gp
EXTRA		:=

cflags-y	:= -pipe $(EXTRA) -ffixed-r13 -mfixed-range=f12-f15,f32-f127 \
		   -falign-functions=32 -frename-registers -fno-optimize-sibling-calls
KBUILD_CFLAGS_KERNEL := -mconstant-gp

GAS_STATUS	= $(shell $(srctree)/arch/ia64/scripts/check-gas "$(CC)" "$(OBJDUMP)")
KBUILD_CPPFLAGS += $(shell $(srctree)/arch/ia64/scripts/toolchain-flags "$(CC)" "$(OBJDUMP)" "$(READELF)")

ifeq ($(GAS_STATUS),buggy)
$(error Sorry, you need a newer version of the assember, one that is built from	\
	a source-tree that post-dates 18-Dec-2002.  You can find a pre-compiled	\
	static binary of such an assembler at:					\
										\
		ftp://ftp.hpl.hp.com/pub/linux-ia64/gas-030124.tar.gz)
endif

KBUILD_CFLAGS += $(cflags-y)
head-y := arch/ia64/kernel/head.o arch/ia64/kernel/init_task.o

libs-y				+= arch/ia64/lib/
core-y				+= arch/ia64/kernel/ arch/ia64/mm/
core-$(CONFIG_IA64_DIG) 	+= arch/ia64/dig/
core-$(CONFIG_IA64_DIG_VTD) 	+= arch/ia64/dig/
core-$(CONFIG_IA64_GENERIC) 	+= arch/ia64/dig/
core-$(CONFIG_IA64_HP_ZX1)	+= arch/ia64/dig/
core-$(CONFIG_IA64_HP_ZX1_SWIOTLB) += arch/ia64/dig/
core-$(CONFIG_IA64_SGI_SN2)	+= arch/ia64/sn/
core-$(CONFIG_IA64_SGI_UV)	+= arch/ia64/uv/

drivers-$(CONFIG_PCI)		+= arch/ia64/pci/
drivers-$(CONFIG_IA64_HP_SIM)	+= arch/ia64/hp/sim/
drivers-$(CONFIG_IA64_HP_ZX1)	+= arch/ia64/hp/common/ arch/ia64/hp/zx1/
drivers-$(CONFIG_IA64_HP_ZX1_SWIOTLB) += arch/ia64/hp/common/ arch/ia64/hp/zx1/
drivers-$(CONFIG_IA64_GENERIC)	+= arch/ia64/hp/common/ arch/ia64/hp/zx1/ arch/ia64/hp/sim/ arch/ia64/sn/ arch/ia64/uv/
drivers-$(CONFIG_OPROFILE)	+= arch/ia64/oprofile/

boot := arch/ia64/hp/sim/boot

PHONY += boot compressed check

all: compressed unwcheck

compressed: vmlinux.gz

vmlinuz: vmlinux.gz

vmlinux.gz: vmlinux
	$(Q)$(MAKE) $(build)=$(boot) $@

unwcheck: vmlinux
	-$(Q)READELF=$(READELF) $(PYTHON) $(srctree)/arch/ia64/scripts/unwcheck.py $<

archclean:
	$(Q)$(MAKE) $(clean)=$(boot)

CLEAN_FILES += vmlinux.gz bootloader

boot:	lib/lib.a vmlinux
	$(Q)$(MAKE) $(build)=$(boot) $@

install: vmlinux.gz
	sh $(srctree)/arch/ia64/install.sh $(KERNELRELEASE) $< System.map "$(INSTALL_PATH)"

define archhelp
  echo '* compressed	- Build compressed kernel image'
  echo '  install	- Install compressed kernel image'
  echo '  boot		- Build vmlinux and bootloader for Ski simulator'
  echo '* unwcheck	- Check vmlinux for invalid unwind info'
endef

archprepare: make_nr_irqs_h
PHONY += make_nr_irqs_h

make_nr_irqs_h:
	$(Q)$(MAKE) $(build)=arch/ia64/kernel include/generated/nr-irqs.h
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