linux/arch/mips/kvm
James Hogan e41637d858 MIPS: KVM: Make entry code MIPS64 friendly
The MIPS KVM entry code (originally kvm_locore.S, later locore.S, and
now entry.c) has never quite been right when built for 64-bit, using
32-bit instructions when 64-bit instructions were needed for handling
64-bit registers and pointers. Fix several cases of this now.

The changes roughly fall into the following categories.

- COP0 scratch registers contain guest register values and the VCPU
  pointer, and are themselves full width. Similarly CP0_EPC and
  CP0_BadVAddr registers are full width (even though technically we
  don't support 64-bit guest address spaces with trap & emulate KVM).
  Use MFC0/MTC0 for accessing them.

- Handling of stack pointers and the VCPU pointer must match the pointer
  size of the kernel ABI (always o32 or n64), so use ADDIU.

- The CPU number in thread_info, and the guest_{user,kernel}_asid arrays
  in kvm_vcpu_arch are all 32 bit integers, so use lw (instead of LW) to
  load them.

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
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2016-08-01 18:42:22 +02:00
..
00README.txt
callback.c MIPS: KVM: Convert EXPORT_SYMBOL to _GPL 2016-01-24 03:13:24 +01:00
commpage.c MIPS: KVM: Move commpage so 0x0 is unmapped 2016-06-15 23:58:36 +02:00
commpage.h MIPS: KVM: Rename files to remove the prefix "kvm_" and "kvm_mips_" 2014-06-30 16:52:03 +02:00
dyntrans.c MIPS: KVM: Use kmap instead of CKSEG0ADDR() 2016-08-01 18:42:22 +02:00
emulate.c MIPS: KVM: Decode RDHWR more strictly 2016-07-05 16:09:18 +02:00
entry.c MIPS: KVM: Make entry code MIPS64 friendly 2016-08-01 18:42:22 +02:00
fpu.S MIPS: KVM: Fix fpu.S misassembly with r6 2016-07-05 16:09:11 +02:00
interrupt.c MIPS: KVM: Convert code to kernel sized types 2016-06-14 11:02:41 +02:00
interrupt.h MIPS; KVM: Convert exception entry to uasm 2016-07-05 16:08:46 +02:00
Kconfig MIPS; KVM: Convert exception entry to uasm 2016-07-05 16:08:46 +02:00
Makefile MIPS; KVM: Convert exception entry to uasm 2016-07-05 16:08:46 +02:00
mips.c MIPS: KVM: Don't save/restore lo/hi for r6 2016-07-05 16:09:14 +02:00
mmu.c MIPS: KVM: Use kmap instead of CKSEG0ADDR() 2016-08-01 18:42:22 +02:00
msa.S MIPS: KVM: Add base guest MSA support 2015-03-27 21:25:19 +00:00
stats.c MIPS: KVM: Clean up kvm_exit trace event 2016-06-14 11:16:23 +02:00
tlb.c MIPS: KVM: Use virt_to_phys() to get commpage PFN 2016-08-01 18:42:21 +02:00
trace.h MIPS: KVM: Combine entry trace events into class 2016-06-23 19:17:30 +02:00
trap_emul.c MIPS: KVM: Emulate generic QEMU machine on r6 T&E 2016-07-05 16:09:20 +02:00