diff options
Diffstat (limited to 'target-mips')
| -rw-r--r-- | target-mips/helper.c | 33 |
1 files changed, 26 insertions, 7 deletions
diff --git a/target-mips/helper.c b/target-mips/helper.c index caacd762fd..8a997e44e5 100644 --- a/target-mips/helper.c +++ b/target-mips/helper.c @@ -24,6 +24,7 @@ #include <signal.h> #include "cpu.h" +#include "sysemu/kvm.h" enum { TLBRET_DIRTY = -4, @@ -100,7 +101,7 @@ int r4k_map_address (CPUMIPSState *env, hwaddr *physical, int *prot, } static int get_physical_address (CPUMIPSState *env, hwaddr *physical, - int *prot, target_ulong address, + int *prot, target_ulong real_address, int rw, int access_type) { /* User mode can only access useg/xuseg */ @@ -113,6 +114,8 @@ static int get_physical_address (CPUMIPSState *env, hwaddr *physical, int KX = (env->CP0_Status & (1 << CP0St_KX)) != 0; #endif int ret = TLBRET_MATCH; + /* effective address (modified for KVM T&E kernel segments) */ + target_ulong address = real_address; #if 0 qemu_log("user mode %d h %08x\n", user_mode, env->hflags); @@ -124,19 +127,35 @@ static int get_physical_address (CPUMIPSState *env, hwaddr *physical, #define KSEG2_BASE 0xC0000000UL #define KSEG3_BASE 0xE0000000UL +#define KVM_KSEG0_BASE 0x40000000UL +#define KVM_KSEG2_BASE 0x60000000UL + + if (kvm_enabled()) { + /* KVM T&E adds guest kernel segments in useg */ + if (real_address >= KVM_KSEG0_BASE) { + if (real_address < KVM_KSEG2_BASE) { + /* kseg0 */ + address += KSEG0_BASE - KVM_KSEG0_BASE; + } else if (real_address <= USEG_LIMIT) { + /* kseg2/3 */ + address += KSEG2_BASE - KVM_KSEG2_BASE; + } + } + } + if (address <= USEG_LIMIT) { /* useg */ if (env->CP0_Status & (1 << CP0St_ERL)) { *physical = address & 0xFFFFFFFF; *prot = PAGE_READ | PAGE_WRITE; } else { - ret = env->tlb->map_address(env, physical, prot, address, rw, access_type); + ret = env->tlb->map_address(env, physical, prot, real_address, rw, access_type); } #if defined(TARGET_MIPS64) } else if (address < 0x4000000000000000ULL) { /* xuseg */ if (UX && address <= (0x3FFFFFFFFFFFFFFFULL & env->SEGMask)) { - ret = env->tlb->map_address(env, physical, prot, address, rw, access_type); + ret = env->tlb->map_address(env, physical, prot, real_address, rw, access_type); } else { ret = TLBRET_BADADDR; } @@ -144,7 +163,7 @@ static int get_physical_address (CPUMIPSState *env, hwaddr *physical, /* xsseg */ if ((supervisor_mode || kernel_mode) && SX && address <= (0x7FFFFFFFFFFFFFFFULL & env->SEGMask)) { - ret = env->tlb->map_address(env, physical, prot, address, rw, access_type); + ret = env->tlb->map_address(env, physical, prot, real_address, rw, access_type); } else { ret = TLBRET_BADADDR; } @@ -161,7 +180,7 @@ static int get_physical_address (CPUMIPSState *env, hwaddr *physical, /* xkseg */ if (kernel_mode && KX && address <= (0xFFFFFFFF7FFFFFFFULL & env->SEGMask)) { - ret = env->tlb->map_address(env, physical, prot, address, rw, access_type); + ret = env->tlb->map_address(env, physical, prot, real_address, rw, access_type); } else { ret = TLBRET_BADADDR; } @@ -185,7 +204,7 @@ static int get_physical_address (CPUMIPSState *env, hwaddr *physical, } else if (address < (int32_t)KSEG3_BASE) { /* sseg (kseg2) */ if (supervisor_mode || kernel_mode) { - ret = env->tlb->map_address(env, physical, prot, address, rw, access_type); + ret = env->tlb->map_address(env, physical, prot, real_address, rw, access_type); } else { ret = TLBRET_BADADDR; } @@ -193,7 +212,7 @@ static int get_physical_address (CPUMIPSState *env, hwaddr *physical, /* kseg3 */ /* XXX: debug segment is not emulated */ if (kernel_mode) { - ret = env->tlb->map_address(env, physical, prot, address, rw, access_type); + ret = env->tlb->map_address(env, physical, prot, real_address, rw, access_type); } else { ret = TLBRET_BADADDR; } |