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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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b0c632db63
This patch contains the port of Qumranet's kvm kernel module to IBM zSeries
(aka s390x, mainframe) architecture. It uses the mainframe's virtualization
instruction SIE to run virtual machines with up to 64 virtual CPUs each.
This port is only usable on 64bit host kernels, and can only run 64bit guest
kernels. However, running 31bit applications in guest userspace is possible.
The following source files are introduced by this patch
arch/s390/kvm/kvm-s390.c similar to arch/x86/kvm/x86.c, this implements all
arch callbacks for kvm. __vcpu_run calls back into
sie64a to enter the guest machine context
arch/s390/kvm/sie64a.S assembler function sie64a, which enters guest
context via SIE, and switches world before and after that
include/asm-s390/kvm_host.h contains all vital data structures needed to run
virtual machines on the mainframe
include/asm-s390/kvm.h defines kvm_regs and friends for user access to
guest register content
arch/s390/kvm/gaccess.h functions similar to uaccess to access guest memory
arch/s390/kvm/kvm-s390.h header file for kvm-s390 internals, extended by
later patches
Acked-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Carsten Otte <cotte@de.ibm.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>
118 lines
3.3 KiB
Makefile
118 lines
3.3 KiB
Makefile
#
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# s390/Makefile
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#
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# This file is included by the global makefile so that you can add your own
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# architecture-specific flags and dependencies. Remember to do have actions
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# for "archclean" and "archdep" for cleaning up and making dependencies for
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# this architecture
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#
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# This file is subject to the terms and conditions of the GNU General Public
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# License. See the file "COPYING" in the main directory of this archive
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# for more details.
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#
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# Copyright (C) 1994 by Linus Torvalds
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#
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ifndef CONFIG_64BIT
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LDFLAGS := -m elf_s390
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KBUILD_CFLAGS += -m31
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KBUILD_AFLAGS += -m31
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UTS_MACHINE := s390
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STACK_SIZE := 8192
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CHECKFLAGS += -D__s390__ -msize-long
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else
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LDFLAGS := -m elf64_s390
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MODFLAGS += -fpic -D__PIC__
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KBUILD_CFLAGS += -m64
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KBUILD_AFLAGS += -m64
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UTS_MACHINE := s390x
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STACK_SIZE := 16384
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CHECKFLAGS += -D__s390__ -D__s390x__
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endif
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cflags-$(CONFIG_MARCH_G5) += $(call cc-option,-march=g5)
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cflags-$(CONFIG_MARCH_Z900) += $(call cc-option,-march=z900)
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cflags-$(CONFIG_MARCH_Z990) += $(call cc-option,-march=z990)
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cflags-$(CONFIG_MARCH_Z9_109) += $(call cc-option,-march=z9-109)
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#KBUILD_IMAGE is necessary for make rpm
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KBUILD_IMAGE :=arch/s390/boot/image
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#
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# Prevent tail-call optimizations, to get clearer backtraces:
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#
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cflags-$(CONFIG_FRAME_POINTER) += -fno-optimize-sibling-calls
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# old style option for packed stacks
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ifeq ($(call cc-option-yn,-mkernel-backchain),y)
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cflags-$(CONFIG_PACK_STACK) += -mkernel-backchain -D__PACK_STACK
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aflags-$(CONFIG_PACK_STACK) += -D__PACK_STACK
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cflags-$(CONFIG_SMALL_STACK) += -D__SMALL_STACK
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aflags-$(CONFIG_SMALL_STACK) += -D__SMALL_STACK
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ifdef CONFIG_SMALL_STACK
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STACK_SIZE := $(shell echo $$(($(STACK_SIZE)/2)) )
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endif
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endif
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# new style option for packed stacks
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ifeq ($(call cc-option-yn,-mpacked-stack),y)
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cflags-$(CONFIG_PACK_STACK) += -mpacked-stack -D__PACK_STACK
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aflags-$(CONFIG_PACK_STACK) += -D__PACK_STACK
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cflags-$(CONFIG_SMALL_STACK) += -D__SMALL_STACK
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aflags-$(CONFIG_SMALL_STACK) += -D__SMALL_STACK
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ifdef CONFIG_SMALL_STACK
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STACK_SIZE := $(shell echo $$(($(STACK_SIZE)/2)) )
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endif
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endif
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ifeq ($(call cc-option-yn,-mstack-size=8192 -mstack-guard=128),y)
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cflags-$(CONFIG_CHECK_STACK) += -mstack-size=$(STACK_SIZE)
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ifneq ($(call cc-option-yn,-mstack-size=8192),y)
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cflags-$(CONFIG_CHECK_STACK) += -mstack-guard=$(CONFIG_STACK_GUARD)
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endif
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endif
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ifeq ($(call cc-option-yn,-mwarn-dynamicstack),y)
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cflags-$(CONFIG_WARN_STACK) += -mwarn-dynamicstack
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cflags-$(CONFIG_WARN_STACK) += -mwarn-framesize=$(CONFIG_WARN_STACK_SIZE)
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endif
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KBUILD_CFLAGS += -mbackchain -msoft-float $(cflags-y)
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KBUILD_CFLAGS += -pipe -fno-strength-reduce -Wno-sign-compare
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KBUILD_AFLAGS += $(aflags-y)
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OBJCOPYFLAGS := -O binary
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LDFLAGS_vmlinux := -e start
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head-y := arch/s390/kernel/head.o arch/s390/kernel/init_task.o
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core-y += arch/s390/mm/ arch/s390/kernel/ arch/s390/crypto/ \
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arch/s390/appldata/ arch/s390/hypfs/ arch/s390/kvm/
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libs-y += arch/s390/lib/
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drivers-y += drivers/s390/
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drivers-$(CONFIG_MATHEMU) += arch/s390/math-emu/
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# must be linked after kernel
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drivers-$(CONFIG_OPROFILE) += arch/s390/oprofile/
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boot := arch/s390/boot
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all: image
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install: vmlinux
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$(Q)$(MAKE) $(build)=$(boot) $@
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image: vmlinux
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$(Q)$(MAKE) $(build)=$(boot) $(boot)/$@
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zfcpdump:
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$(Q)$(MAKE) $(build)=$(boot) $(boot)/$@
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archclean:
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$(Q)$(MAKE) $(clean)=$(boot)
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# Don't use tabs in echo arguments
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define archhelp
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echo '* image - Kernel image for IPL ($(boot)/image)'
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endef
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