| Message ID | 2fd6fb9c03bac22f06697e07e794071bf18b7c83.1489485940.git-series.james.hogan@imgtec.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
Hi James,
[auto build test WARNING on kvm/linux-next]
[also build test WARNING on v4.11-rc2 next-20170310]
[if your patch is applied to the wrong git tree, please drop us a note to help improve the system]
url: https://github.com/0day-ci/linux/commits/James-Hogan/KVM-MIPS-Add-VZ-support/20170316-161027
base: https://git.kernel.org/pub/scm/virt/kvm/kvm.git linux-next
config: mips-allmodconfig (attached as .config)
compiler: mips-linux-gnu-gcc (Debian 6.1.1-9) 6.1.1 20160705
reproduce:
wget https://raw.githubusercontent.com/01org/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
chmod +x ~/bin/make.cross
# save the attached .config to linux build tree
make.cross ARCH=mips
All warnings (new ones prefixed by >>):
warning: (REMOTEPROC && RPMSG_VIRTIO) selects VIRTUALIZATION which has unmet direct dependencies (HAVE_KVM)
---
0-DAY kernel test infrastructure Open Source Technology Center
https://lists.01.org/pipermail/kbuild-all Intel Corporation
On Thu, Mar 16, 2017 at 07:40:44PM +0800, kbuild test robot wrote: > [auto build test WARNING on kvm/linux-next] > [also build test WARNING on v4.11-rc2 next-20170310] > [if your patch is applied to the wrong git tree, please drop us a note to help improve the system] > > url: https://github.com/0day-ci/linux/commits/James-Hogan/KVM-MIPS-Add-VZ-support/20170316-161027 > base: https://git.kernel.org/pub/scm/virt/kvm/kvm.git linux-next > config: mips-allmodconfig (attached as .config) > compiler: mips-linux-gnu-gcc (Debian 6.1.1-9) 6.1.1 20160705 > reproduce: > wget https://raw.githubusercontent.com/01org/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross > chmod +x ~/bin/make.cross > # save the attached .config to linux build tree > make.cross ARCH=mips > > All warnings (new ones prefixed by >>): > > warning: (REMOTEPROC && RPMSG_VIRTIO) selects VIRTUALIZATION which has unmet direct dependencies (HAVE_KVM) Yes, the new "depends on HAVE_KVM" is unnecessary anyway so I'll just drop that. Thanks! James
diff --git a/arch/mips/kvm/Kconfig b/arch/mips/kvm/Kconfig index 65067327db12..81bf5bf1d5e1 100644 --- a/arch/mips/kvm/Kconfig +++ b/arch/mips/kvm/Kconfig @@ -5,6 +5,7 @@ source "virt/kvm/Kconfig" menuconfig VIRTUALIZATION bool "Virtualization" + depends on HAVE_KVM ---help--- Say Y here to get to see options for using your Linux host to run other operating systems inside virtual machines (guests). @@ -26,11 +27,34 @@ config KVM select SRCU ---help--- Support for hosting Guest kernels. - Currently supported on MIPS32 processors. + +choice + prompt "Virtualization mode" + depends on KVM + default KVM_MIPS_TE + +config KVM_MIPS_TE + bool "Trap & Emulate" + ---help--- + Use trap and emulate to virtualize 32-bit guests in user mode. This + does not require any special hardware Virtualization support beyond + standard MIPS32/64 r2 or later, but it does require the guest kernel + to be configured with CONFIG_KVM_GUEST=y so that it resides in the + user address segment. + +config KVM_MIPS_VZ + bool "MIPS Virtualization (VZ) ASE" + ---help--- + Use the MIPS Virtualization (VZ) ASE to virtualize guests. This + supports running unmodified guest kernels (with CONFIG_KVM_GUEST=n), + but requires hardware support. + +endchoice config KVM_MIPS_DYN_TRANS bool "KVM/MIPS: Dynamic binary translation to reduce traps" - depends on KVM + depends on KVM_MIPS_TE + default y ---help--- When running in Trap & Emulate mode patch privileged instructions to reduce the number of traps. diff --git a/arch/mips/kvm/Makefile b/arch/mips/kvm/Makefile index e56403c8a3f5..45d90f5d5177 100644 --- a/arch/mips/kvm/Makefile +++ b/arch/mips/kvm/Makefile @@ -9,9 +9,15 @@ common-objs-$(CONFIG_CPU_HAS_MSA) += msa.o kvm-objs := $(common-objs-y) mips.o emulate.o entry.o \ interrupt.o stats.o commpage.o \ - dyntrans.o trap_emul.o fpu.o + fpu.o kvm-objs += hypcall.o kvm-objs += mmu.o +ifdef CONFIG_KVM_MIPS_VZ +kvm-objs += vz.o +else +kvm-objs += dyntrans.o +kvm-objs += trap_emul.o +endif obj-$(CONFIG_KVM) += kvm.o obj-y += callback.o tlb.o
Add support for the MIPS Virtualization (VZ) ASE to the MIPS KVM build system. For now KVM can only be configured for T&E or VZ and not both, but the design of the user facing APIs support the possibility of having both available, so this could change in future. Note that support for various optional guest features (some of which can't be turned off) are implemented in immediately following commits, so although it should now be possible to build VZ support, it may not work yet on your hardware. Signed-off-by: James Hogan <james.hogan@imgtec.com> Cc: Paolo Bonzini <pbonzini@redhat.com> Cc: "Radim Krčmář" <rkrcmar@redhat.com> Cc: Ralf Baechle <ralf@linux-mips.org> Cc: linux-mips@linux-mips.org Cc: kvm@vger.kernel.org --- arch/mips/kvm/Kconfig | 28 ++++++++++++++++++++++++++-- arch/mips/kvm/Makefile | 8 +++++++- 2 files changed, 33 insertions(+), 3 deletions(-)