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authorJames Hogan <james.hogan@imgtec.com>2015-03-04 15:56:47 +0000
committerJames Hogan <james.hogan@imgtec.com>2015-03-27 21:25:11 +0000
commit2211ee810ac6fdcdb42b7a126e20d1b4e5c55124 (patch)
tree025c65ac1c3253812a5c0b738899fd698a6e97ae /arch/mips/kvm
parent7bd4acec42670a18b023392db6f4bfaa4dee179e (diff)
downloadop-kernel-dev-2211ee810ac6fdcdb42b7a126e20d1b4e5c55124.zip
op-kernel-dev-2211ee810ac6fdcdb42b7a126e20d1b4e5c55124.tar.gz
MIPS: KVM: Simplify default guest Config registers
Various semi-used definitions exist in kvm_host.h for the default guest config registers. Remove them and use the appropriate values directly when initialising the Config registers. Signed-off-by: James Hogan <james.hogan@imgtec.com> Cc: Paolo Bonzini <pbonzini@redhat.com> Cc: Ralf Baechle <ralf@linux-mips.org> Cc: Gleb Natapov <gleb@kernel.org> Cc: linux-mips@linux-mips.org Cc: kvm@vger.kernel.org
Diffstat (limited to 'arch/mips/kvm')
-rw-r--r--arch/mips/kvm/trap_emul.c15
1 files changed, 9 insertions, 6 deletions
diff --git a/arch/mips/kvm/trap_emul.c b/arch/mips/kvm/trap_emul.c
index dc01995..bffba00 100644
--- a/arch/mips/kvm/trap_emul.c
+++ b/arch/mips/kvm/trap_emul.c
@@ -396,8 +396,9 @@ static int kvm_trap_emul_vcpu_setup(struct kvm_vcpu *vcpu)
* guest will come up as expected, for now we simulate a MIPS 24kc
*/
kvm_write_c0_guest_prid(cop0, 0x00019300);
- kvm_write_c0_guest_config(cop0,
- MIPS_CONFIG0 | (0x1 << CP0C0_AR) |
+ /* Have config1, Cacheable, noncoherent, write-back, write allocate */
+ kvm_write_c0_guest_config(cop0, MIPS_CONF_M | (0x3 << CP0C0_K0) |
+ (0x1 << CP0C0_AR) |
(MMU_TYPE_R4000 << CP0C0_MT));
/* Read the cache characteristics from the host Config1 Register */
@@ -413,10 +414,12 @@ static int kvm_trap_emul_vcpu_setup(struct kvm_vcpu *vcpu)
(1 << CP0C1_WR) | (1 << CP0C1_CA));
kvm_write_c0_guest_config1(cop0, config1);
- kvm_write_c0_guest_config2(cop0, MIPS_CONFIG2);
- /* MIPS_CONFIG2 | (read_c0_config2() & 0xfff) */
- kvm_write_c0_guest_config3(cop0, MIPS_CONFIG3 | (0 << CP0C3_VInt) |
- (1 << CP0C3_ULRI));
+ /* Have config3, no tertiary/secondary caches implemented */
+ kvm_write_c0_guest_config2(cop0, MIPS_CONF_M);
+ /* MIPS_CONF_M | (read_c0_config2() & 0xfff) */
+
+ /* No config4, UserLocal */
+ kvm_write_c0_guest_config3(cop0, MIPS_CONF3_ULRI);
/* Set Wait IE/IXMT Ignore in Config7, IAR, AR */
kvm_write_c0_guest_config7(cop0, (MIPS_CONF7_WII) | (1 << 10));
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