KVM: MIPS: Remove duplicated ASIDs from vcpu

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The kvm_vcpu_arch structure contains both mm_structs for allocating MMU
contexts (primarily the ASID) but it also copies the resulting ASIDs
into guest_{user,kernel}_asid[] arrays which are referenced from uasm
generated code.

This duplication doesn't seem to serve any purpose, and it gets in the
way of generalising the ASID handling across guest kernel/user modes, so
lets just extract the ASID straight out of the mm_struct on demand, and
in fact there are convenient cpu_context() and cpu_asid() macros for
doing so.

To reduce the verbosity of this code we do also add kern_mm and user_mm
local variables where the kernel and user mm_structs are used.

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

...

This commit is contained in:

James Hogan 2016-10-11 23:14:39 +01:00

parent 1581ff3dbf

commit c550d53934

7 changed files with 44 additions and 48 deletions

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4

arch/mips/include/asm/kvm_host.h

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13

arch/mips/kvm/emulate.c

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22

arch/mips/kvm/entry.c

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8

arch/mips/kvm/mips.c

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8

arch/mips/kvm/mmu.c

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8

arch/mips/kvm/tlb.c

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29

arch/mips/kvm/trap_emul.c

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