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-rw-r--r--arch/mips/kvm/trap_emul.c (renamed from arch/mips/kvm/kvm_trap_emul.c)112
1 files changed, 55 insertions, 57 deletions
diff --git a/arch/mips/kvm/kvm_trap_emul.c b/arch/mips/kvm/trap_emul.c
index 693f952b2fbb..fd7257b70e65 100644
--- a/arch/mips/kvm/kvm_trap_emul.c
+++ b/arch/mips/kvm/trap_emul.c
@@ -1,13 +1,13 @@
/*
-* This file is subject to the terms and conditions of the GNU General Public
-* License. See the file "COPYING" in the main directory of this archive
-* for more details.
-*
-* KVM/MIPS: Deliver/Emulate exceptions to the guest kernel
-*
-* Copyright (C) 2012 MIPS Technologies, Inc. All rights reserved.
-* Authors: Sanjay Lal <sanjayl@kymasys.com>
-*/
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License. See the file "COPYING" in the main directory of this archive
+ * for more details.
+ *
+ * KVM/MIPS: Deliver/Emulate exceptions to the guest kernel
+ *
+ * Copyright (C) 2012 MIPS Technologies, Inc. All rights reserved.
+ * Authors: Sanjay Lal <sanjayl@kymasys.com>
+ */
#include <linux/errno.h>
#include <linux/err.h>
@@ -16,8 +16,8 @@
#include <linux/kvm_host.h>
-#include "kvm_mips_opcode.h"
-#include "kvm_mips_int.h"
+#include "opcode.h"
+#include "interrupt.h"
static gpa_t kvm_trap_emul_gva_to_gpa_cb(gva_t gva)
{
@@ -27,7 +27,7 @@ static gpa_t kvm_trap_emul_gva_to_gpa_cb(gva_t gva)
if ((kseg == CKSEG0) || (kseg == CKSEG1))
gpa = CPHYSADDR(gva);
else {
- printk("%s: cannot find GPA for GVA: %#lx\n", __func__, gva);
+ kvm_err("%s: cannot find GPA for GVA: %#lx\n", __func__, gva);
kvm_mips_dump_host_tlbs();
gpa = KVM_INVALID_ADDR;
}
@@ -37,7 +37,6 @@ static gpa_t kvm_trap_emul_gva_to_gpa_cb(gva_t gva)
return gpa;
}
-
static int kvm_trap_emul_handle_cop_unusable(struct kvm_vcpu *vcpu)
{
struct kvm_run *run = vcpu->run;
@@ -46,9 +45,9 @@ static int kvm_trap_emul_handle_cop_unusable(struct kvm_vcpu *vcpu)
enum emulation_result er = EMULATE_DONE;
int ret = RESUME_GUEST;
- if (((cause & CAUSEF_CE) >> CAUSEB_CE) == 1) {
+ if (((cause & CAUSEF_CE) >> CAUSEB_CE) == 1)
er = kvm_mips_emulate_fpu_exc(cause, opc, run, vcpu);
- } else
+ else
er = kvm_mips_emulate_inst(cause, opc, run, vcpu);
switch (er) {
@@ -83,9 +82,8 @@ static int kvm_trap_emul_handle_tlb_mod(struct kvm_vcpu *vcpu)
if (KVM_GUEST_KSEGX(badvaddr) < KVM_GUEST_KSEG0
|| KVM_GUEST_KSEGX(badvaddr) == KVM_GUEST_KSEG23) {
- kvm_debug
- ("USER/KSEG23 ADDR TLB MOD fault: cause %#lx, PC: %p, BadVaddr: %#lx\n",
- cause, opc, badvaddr);
+ kvm_debug("USER/KSEG23 ADDR TLB MOD fault: cause %#lx, PC: %p, BadVaddr: %#lx\n",
+ cause, opc, badvaddr);
er = kvm_mips_handle_tlbmod(cause, opc, run, vcpu);
if (er == EMULATE_DONE)
@@ -95,20 +93,20 @@ static int kvm_trap_emul_handle_tlb_mod(struct kvm_vcpu *vcpu)
ret = RESUME_HOST;
}
} else if (KVM_GUEST_KSEGX(badvaddr) == KVM_GUEST_KSEG0) {
- /* XXXKYMA: The guest kernel does not expect to get this fault when we are not
- * using HIGHMEM. Need to address this in a HIGHMEM kernel
+ /*
+ * XXXKYMA: The guest kernel does not expect to get this fault
+ * when we are not using HIGHMEM. Need to address this in a
+ * HIGHMEM kernel
*/
- printk
- ("TLB MOD fault not handled, cause %#lx, PC: %p, BadVaddr: %#lx\n",
- cause, opc, badvaddr);
+ kvm_err("TLB MOD fault not handled, cause %#lx, PC: %p, BadVaddr: %#lx\n",
+ cause, opc, badvaddr);
kvm_mips_dump_host_tlbs();
kvm_arch_vcpu_dump_regs(vcpu);
run->exit_reason = KVM_EXIT_INTERNAL_ERROR;
ret = RESUME_HOST;
} else {
- printk
- ("Illegal TLB Mod fault address , cause %#lx, PC: %p, BadVaddr: %#lx\n",
- cause, opc, badvaddr);
+ kvm_err("Illegal TLB Mod fault address , cause %#lx, PC: %p, BadVaddr: %#lx\n",
+ cause, opc, badvaddr);
kvm_mips_dump_host_tlbs();
kvm_arch_vcpu_dump_regs(vcpu);
run->exit_reason = KVM_EXIT_INTERNAL_ERROR;
@@ -134,9 +132,8 @@ static int kvm_trap_emul_handle_tlb_st_miss(struct kvm_vcpu *vcpu)
}
} else if (KVM_GUEST_KSEGX(badvaddr) < KVM_GUEST_KSEG0
|| KVM_GUEST_KSEGX(badvaddr) == KVM_GUEST_KSEG23) {
- kvm_debug
- ("USER ADDR TLB LD fault: cause %#lx, PC: %p, BadVaddr: %#lx\n",
- cause, opc, badvaddr);
+ kvm_debug("USER ADDR TLB LD fault: cause %#lx, PC: %p, BadVaddr: %#lx\n",
+ cause, opc, badvaddr);
er = kvm_mips_handle_tlbmiss(cause, opc, run, vcpu);
if (er == EMULATE_DONE)
ret = RESUME_GUEST;
@@ -145,8 +142,9 @@ static int kvm_trap_emul_handle_tlb_st_miss(struct kvm_vcpu *vcpu)
ret = RESUME_HOST;
}
} else if (KVM_GUEST_KSEGX(badvaddr) == KVM_GUEST_KSEG0) {
- /* All KSEG0 faults are handled by KVM, as the guest kernel does not
- * expect to ever get them
+ /*
+ * All KSEG0 faults are handled by KVM, as the guest kernel does
+ * not expect to ever get them
*/
if (kvm_mips_handle_kseg0_tlb_fault
(vcpu->arch.host_cp0_badvaddr, vcpu) < 0) {
@@ -154,9 +152,8 @@ static int kvm_trap_emul_handle_tlb_st_miss(struct kvm_vcpu *vcpu)
ret = RESUME_HOST;
}
} else {
- kvm_err
- ("Illegal TLB LD fault address , cause %#lx, PC: %p, BadVaddr: %#lx\n",
- cause, opc, badvaddr);
+ kvm_err("Illegal TLB LD fault address , cause %#lx, PC: %p, BadVaddr: %#lx\n",
+ cause, opc, badvaddr);
kvm_mips_dump_host_tlbs();
kvm_arch_vcpu_dump_regs(vcpu);
run->exit_reason = KVM_EXIT_INTERNAL_ERROR;
@@ -185,11 +182,14 @@ static int kvm_trap_emul_handle_tlb_ld_miss(struct kvm_vcpu *vcpu)
kvm_debug("USER ADDR TLB ST fault: PC: %#lx, BadVaddr: %#lx\n",
vcpu->arch.pc, badvaddr);
- /* User Address (UA) fault, this could happen if
- * (1) TLB entry not present/valid in both Guest and shadow host TLBs, in this
- * case we pass on the fault to the guest kernel and let it handle it.
- * (2) TLB entry is present in the Guest TLB but not in the shadow, in this
- * case we inject the TLB from the Guest TLB into the shadow host TLB
+ /*
+ * User Address (UA) fault, this could happen if
+ * (1) TLB entry not present/valid in both Guest and shadow host
+ * TLBs, in this case we pass on the fault to the guest
+ * kernel and let it handle it.
+ * (2) TLB entry is present in the Guest TLB but not in the
+ * shadow, in this case we inject the TLB from the Guest TLB
+ * into the shadow host TLB
*/
er = kvm_mips_handle_tlbmiss(cause, opc, run, vcpu);
@@ -206,9 +206,8 @@ static int kvm_trap_emul_handle_tlb_ld_miss(struct kvm_vcpu *vcpu)
ret = RESUME_HOST;
}
} else {
- printk
- ("Illegal TLB ST fault address , cause %#lx, PC: %p, BadVaddr: %#lx\n",
- cause, opc, badvaddr);
+ kvm_err("Illegal TLB ST fault address , cause %#lx, PC: %p, BadVaddr: %#lx\n",
+ cause, opc, badvaddr);
kvm_mips_dump_host_tlbs();
kvm_arch_vcpu_dump_regs(vcpu);
run->exit_reason = KVM_EXIT_INTERNAL_ERROR;
@@ -231,7 +230,7 @@ static int kvm_trap_emul_handle_addr_err_st(struct kvm_vcpu *vcpu)
kvm_debug("Emulate Store to MMIO space\n");
er = kvm_mips_emulate_inst(cause, opc, run, vcpu);
if (er == EMULATE_FAIL) {
- printk("Emulate Store to MMIO space failed\n");
+ kvm_err("Emulate Store to MMIO space failed\n");
run->exit_reason = KVM_EXIT_INTERNAL_ERROR;
ret = RESUME_HOST;
} else {
@@ -239,9 +238,8 @@ static int kvm_trap_emul_handle_addr_err_st(struct kvm_vcpu *vcpu)
ret = RESUME_HOST;
}
} else {
- printk
- ("Address Error (STORE): cause %#lx, PC: %p, BadVaddr: %#lx\n",
- cause, opc, badvaddr);
+ kvm_err("Address Error (STORE): cause %#lx, PC: %p, BadVaddr: %#lx\n",
+ cause, opc, badvaddr);
run->exit_reason = KVM_EXIT_INTERNAL_ERROR;
ret = RESUME_HOST;
}
@@ -261,7 +259,7 @@ static int kvm_trap_emul_handle_addr_err_ld(struct kvm_vcpu *vcpu)
kvm_debug("Emulate Load from MMIO space @ %#lx\n", badvaddr);
er = kvm_mips_emulate_inst(cause, opc, run, vcpu);
if (er == EMULATE_FAIL) {
- printk("Emulate Load from MMIO space failed\n");
+ kvm_err("Emulate Load from MMIO space failed\n");
run->exit_reason = KVM_EXIT_INTERNAL_ERROR;
ret = RESUME_HOST;
} else {
@@ -269,9 +267,8 @@ static int kvm_trap_emul_handle_addr_err_ld(struct kvm_vcpu *vcpu)
ret = RESUME_HOST;
}
} else {
- printk
- ("Address Error (LOAD): cause %#lx, PC: %p, BadVaddr: %#lx\n",
- cause, opc, badvaddr);
+ kvm_err("Address Error (LOAD): cause %#lx, PC: %p, BadVaddr: %#lx\n",
+ cause, opc, badvaddr);
run->exit_reason = KVM_EXIT_INTERNAL_ERROR;
ret = RESUME_HOST;
er = EMULATE_FAIL;
@@ -349,9 +346,9 @@ static int kvm_trap_emul_vcpu_setup(struct kvm_vcpu *vcpu)
uint32_t config1;
int vcpu_id = vcpu->vcpu_id;
- /* Arch specific stuff, set up config registers properly so that the
- * guest will come up as expected, for now we simulate a
- * MIPS 24kc
+ /*
+ * Arch specific stuff, set up config registers properly so that the
+ * 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,
@@ -373,14 +370,15 @@ static int kvm_trap_emul_vcpu_setup(struct kvm_vcpu *vcpu)
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));
+ kvm_write_c0_guest_config3(cop0, MIPS_CONFIG3 | (0 << CP0C3_VInt) |
+ (1 << CP0C3_ULRI));
/* Set Wait IE/IXMT Ignore in Config7, IAR, AR */
kvm_write_c0_guest_config7(cop0, (MIPS_CONF7_WII) | (1 << 10));
- /* Setup IntCtl defaults, compatibilty mode for timer interrupts (HW5) */
+ /*
+ * Setup IntCtl defaults, compatibilty mode for timer interrupts (HW5)
+ */
kvm_write_c0_guest_intctl(cop0, 0xFC000000);
/* Put in vcpu id as CPUNum into Ebase Reg to handle SMP Guests */
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.