The following patch set adds support for the recently announced virtualization extensions for the MIPS32 architecture and allows running unmodified kernels in Guest Mode. For more info please refer to : MIPS Document #: MD00846 Volume IV-i: Virtualization Module of the MIPS32 Architecture which can be accessed @: http://www.mips.com/auth/MD00846-2B-VZMIPS32-AFP-01.03.pdf The patch is agains Linux-3.10-rc1. KVM/MIPS now supports 2 modes of operation: (1) VZ mode: Unmodified kernels running in Guest Mode. The processor now provides an almost complete COP0 context in Guest mode. This greatly reduces VM exits. (2) Trap and Emulate: Runs minimally modified guest kernels in UM and uses binary patching to minimize the number of traps and improve performance. This is used for processors that do not support the VZ-ASE. -- Sanjay Lal (18): Revert "MIPS: microMIPS: Support dynamic ASID sizing." Revert "MIPS: Allow ASID size to be determined at boot time." KVM/MIPS32: Export min_low_pfn. KVM/MIPS32-VZ: MIPS VZ-ASE related register defines and helper macros. KVM/MIPS32-VZ: VZ-ASE assembler wrapper functions to set GuestIDs KVM/MIPS32-VZ: VZ-ASE related callbacks to handle guest exceptions that trap to the Root context. KVM/MIPS32: VZ-ASE related CPU feature flags and options. KVM/MIPS32-VZ: Entry point for trampolining to the guest and trap handlers. KVM/MIPS32-VZ: Add support for CONFIG_KVM_MIPS_VZ option KVM/MIPS32-VZ: Add API for VZ-ASE Capability KVM/MIPS32-VZ: VZ: Handle Guest TLB faults that are handled in Root context KVM/MIPS32-VZ: VM Exit Stats, add VZ exit reasons. KVM/MIPS32-VZ: Top level handler for Guest faults KVM/MIPS32-VZ: Guest exception batching support. KVM/MIPS32: Add dummy trap handler to catch unexpected exceptions and dump out useful info KVM/MIPS32-VZ: Add VZ-ASE support to KVM/MIPS data structures. KVM/MIPS32: Revert to older method for accessing ASID parameters KVM/MIPS32-VZ: Dump out additional info about VZ features as part of /proc/cpuinfo arch/mips/include/asm/cpu-features.h | 36 ++ arch/mips/include/asm/cpu-info.h | 21 + arch/mips/include/asm/cpu.h | 5 + arch/mips/include/asm/kvm_host.h | 244 ++++++-- arch/mips/include/asm/mipsvzregs.h | 494 +++++++++++++++ arch/mips/include/asm/mmu_context.h | 95 ++- arch/mips/kernel/genex.S | 2 +- arch/mips/kernel/mips_ksyms.c | 6 + arch/mips/kernel/proc.c | 11 + arch/mips/kernel/smtc.c | 10 +- arch/mips/kernel/traps.c | 6 +- arch/mips/kvm/Kconfig | 14 +- arch/mips/kvm/Makefile | 14 +- arch/mips/kvm/kvm_locore.S | 1088 ++++++++++++++++++---------------- arch/mips/kvm/kvm_mips.c | 73 ++- arch/mips/kvm/kvm_mips_dyntrans.c | 24 +- arch/mips/kvm/kvm_mips_emul.c | 236 ++++---- arch/mips/kvm/kvm_mips_int.h | 5 + arch/mips/kvm/kvm_mips_stats.c | 17 +- arch/mips/kvm/kvm_tlb.c | 444 +++++++++++--- arch/mips/kvm/kvm_trap_emul.c | 68 ++- arch/mips/kvm/kvm_vz.c | 786 ++++++++++++++++++++++++ arch/mips/kvm/kvm_vz_locore.S | 74 +++ arch/mips/lib/dump_tlb.c | 5 +- arch/mips/lib/r3k_dump_tlb.c | 7 +- arch/mips/mm/tlb-r3k.c | 20 +- arch/mips/mm/tlb-r4k.c | 2 +- arch/mips/mm/tlb-r8k.c | 2 +- arch/mips/mm/tlbex.c | 82 +-- include/uapi/linux/kvm.h | 1 + 30 files changed, 2906 insertions(+), 986 deletions(-) create mode 100644 arch/mips/include/asm/mipsvzregs.h create mode 100644 arch/mips/kvm/kvm_vz.c create mode 100644 arch/mips/kvm/kvm_vz_locore.S -- 1.7.11.3
