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authorJames Hogan <james.hogan@imgtec.com>2016-06-15 19:29:52 +0100
committerPaolo Bonzini <pbonzini@redhat.com>2016-06-15 23:58:25 +0200
commitaff565aab961d3cab3299a7008af6cdef88b79a0 (patch)
tree1b350bd49c8a40b56da58af78d4a3078d75a9190 /arch/mips/kvm/emulate.c
parente57759306c44ba6105c04eafc3b22efc55bb7ad2 (diff)
downloadblackbird-op-linux-aff565aab961d3cab3299a7008af6cdef88b79a0.tar.gz
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MIPS: Clean up RDHWR handling
No preprocessor definitions are used in the handling of the registers accessible with the RDHWR instruction, nor the corresponding bits in the CP0 HWREna register. Add definitions for both the register numbers (MIPS_HWR_*) and HWREna bits (MIPS_HWRENA_*) in asm/mipsregs.h and make use of them in the initialisation of HWREna and emulation of the RDHWR instruction. Signed-off-by: James Hogan <james.hogan@imgtec.com> Acked-by: Ralf Baechle <ralf@linux-mips.org> Cc: David Daney <david.daney@cavium.com> Cc: Paolo Bonzini <pbonzini@redhat.com> Cc: Radim Krčmář <rkrcmar@redhat.com> Cc: linux-mips@linux-mips.org Cc: kvm@vger.kernel.org Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'arch/mips/kvm/emulate.c')
-rw-r--r--arch/mips/kvm/emulate.c10
1 files changed, 5 insertions, 5 deletions
diff --git a/arch/mips/kvm/emulate.c b/arch/mips/kvm/emulate.c
index 80bb6212a067..892f36f56d32 100644
--- a/arch/mips/kvm/emulate.c
+++ b/arch/mips/kvm/emulate.c
@@ -2296,17 +2296,17 @@ enum emulation_result kvm_mips_handle_ri(u32 cause, u32 *opc,
goto emulate_ri;
}
switch (rd) {
- case 0: /* CPU number */
+ case MIPS_HWR_CPUNUM: /* CPU number */
arch->gprs[rt] = 0;
break;
- case 1: /* SYNCI length */
+ case MIPS_HWR_SYNCISTEP: /* SYNCI length */
arch->gprs[rt] = min(current_cpu_data.dcache.linesz,
current_cpu_data.icache.linesz);
break;
- case 2: /* Read count register */
+ case MIPS_HWR_CC: /* Read count register */
arch->gprs[rt] = kvm_mips_read_count(vcpu);
break;
- case 3: /* Count register resolution */
+ case MIPS_HWR_CCRES: /* Count register resolution */
switch (current_cpu_data.cputype) {
case CPU_20KC:
case CPU_25KF:
@@ -2316,7 +2316,7 @@ enum emulation_result kvm_mips_handle_ri(u32 cause, u32 *opc,
arch->gprs[rt] = 2;
}
break;
- case 29:
+ case MIPS_HWR_ULR: /* Read UserLocal register */
arch->gprs[rt] = kvm_read_c0_guest_userlocal(cop0);
break;
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