Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6

Conflicts:

	Documentation/kernel-parameters.txt
	arch/sh/include/asm/elf.h

1 files changed, 114 insertions, 56 deletions

diff --git a/arch/x86/kvm/x86_emulate.c b/arch/x86/kvm/x86_emulate.c
index f2f90468f8b..ea051173b0d 100644
--- a/arch/x86/kvm/x86_emulate.c
+++ b/arch/x86/kvm/x86_emulate.c
@@ -26,6 +26,7 @@
 #define DPRINTF(_f, _a ...) printf(_f , ## _a)
 #else
 #include <linux/kvm_host.h>
+#include "kvm_cache_regs.h"
 #define DPRINTF(x...) do {} while (0)
 #endif
 #include <linux/module.h>
@@ -46,25 +47,26 @@
 #define ImplicitOps (1<<1)	/* Implicit in opcode. No generic decode. */
 #define DstReg      (2<<1)	/* Register operand. */
 #define DstMem      (3<<1)	/* Memory operand. */
-#define DstMask     (3<<1)
+#define DstAcc      (4<<1)      /* Destination Accumulator */
+#define DstMask     (7<<1)
 /* Source operand type. */
-#define SrcNone     (0<<3)	/* No source operand. */
-#define SrcImplicit (0<<3)	/* Source operand is implicit in the opcode. */
-#define SrcReg      (1<<3)	/* Register operand. */
-#define SrcMem      (2<<3)	/* Memory operand. */
-#define SrcMem16    (3<<3)	/* Memory operand (16-bit). */
-#define SrcMem32    (4<<3)	/* Memory operand (32-bit). */
-#define SrcImm      (5<<3)	/* Immediate operand. */
-#define SrcImmByte  (6<<3)	/* 8-bit sign-extended immediate operand. */
-#define SrcMask     (7<<3)
+#define SrcNone     (0<<4)	/* No source operand. */
+#define SrcImplicit (0<<4)	/* Source operand is implicit in the opcode. */
+#define SrcReg      (1<<4)	/* Register operand. */
+#define SrcMem      (2<<4)	/* Memory operand. */
+#define SrcMem16    (3<<4)	/* Memory operand (16-bit). */
+#define SrcMem32    (4<<4)	/* Memory operand (32-bit). */
+#define SrcImm      (5<<4)	/* Immediate operand. */
+#define SrcImmByte  (6<<4)	/* 8-bit sign-extended immediate operand. */
+#define SrcMask     (7<<4)
 /* Generic ModRM decode. */
-#define ModRM       (1<<6)
+#define ModRM       (1<<7)
 /* Destination is only written; never read. */
-#define Mov         (1<<7)
-#define BitOp       (1<<8)
-#define MemAbs      (1<<9)      /* Memory operand is absolute displacement */
-#define String      (1<<10)     /* String instruction (rep capable) */
-#define Stack       (1<<11)     /* Stack instruction (push/pop) */
+#define Mov         (1<<8)
+#define BitOp       (1<<9)
+#define MemAbs      (1<<10)      /* Memory operand is absolute displacement */
+#define String      (1<<12)     /* String instruction (rep capable) */
+#define Stack       (1<<13)     /* Stack instruction (push/pop) */
 #define Group       (1<<14)     /* Bits 3:5 of modrm byte extend opcode */
 #define GroupDual   (1<<15)     /* Alternate decoding of mod == 3 */
 #define GroupMask   0xff        /* Group number stored in bits 0:7 */
@@ -94,7 +96,7 @@ static u16 opcode_table[256] = {
 	/* 0x20 - 0x27 */
 	ByteOp | DstMem | SrcReg | ModRM, DstMem | SrcReg | ModRM,
 	ByteOp | DstReg | SrcMem | ModRM, DstReg | SrcMem | ModRM,
-	SrcImmByte, SrcImm, 0, 0,
+	DstAcc | SrcImmByte, DstAcc | SrcImm, 0, 0,
 	/* 0x28 - 0x2F */
 	ByteOp | DstMem | SrcReg | ModRM, DstMem | SrcReg | ModRM,
 	ByteOp | DstReg | SrcMem | ModRM, DstReg | SrcMem | ModRM,
@@ -106,7 +108,8 @@ static u16 opcode_table[256] = {
 	/* 0x38 - 0x3F */
 	ByteOp | DstMem | SrcReg | ModRM, DstMem | SrcReg | ModRM,
 	ByteOp | DstReg | SrcMem | ModRM, DstReg | SrcMem | ModRM,
-	0, 0, 0, 0,
+	ByteOp | DstAcc | SrcImm, DstAcc | SrcImm,
+	0, 0,
 	/* 0x40 - 0x47 */
 	DstReg, DstReg, DstReg, DstReg, DstReg, DstReg, DstReg, DstReg,
 	/* 0x48 - 0x4F */
@@ -153,9 +156,16 @@ static u16 opcode_table[256] = {
 	0, 0, ByteOp | ImplicitOps | Mov | String, ImplicitOps | Mov | String,
 	ByteOp | ImplicitOps | Mov | String, ImplicitOps | Mov | String,
 	ByteOp | ImplicitOps | String, ImplicitOps | String,
-	/* 0xB0 - 0xBF */
-	0, 0, 0, 0, 0, 0, 0, 0,
-	DstReg | SrcImm | Mov, 0, 0, 0, 0, 0, 0, 0,
+	/* 0xB0 - 0xB7 */
+	ByteOp | DstReg | SrcImm | Mov, ByteOp | DstReg | SrcImm | Mov,
+	ByteOp | DstReg | SrcImm | Mov, ByteOp | DstReg | SrcImm | Mov,
+	ByteOp | DstReg | SrcImm | Mov, ByteOp | DstReg | SrcImm | Mov,
+	ByteOp | DstReg | SrcImm | Mov, ByteOp | DstReg | SrcImm | Mov,
+	/* 0xB8 - 0xBF */
+	DstReg | SrcImm | Mov, DstReg | SrcImm | Mov,
+	DstReg | SrcImm | Mov, DstReg | SrcImm | Mov,
+	DstReg | SrcImm | Mov, DstReg | SrcImm | Mov,
+	DstReg | SrcImm | Mov, DstReg | SrcImm | Mov,
 	/* 0xC0 - 0xC7 */
 	ByteOp | DstMem | SrcImm | ModRM, DstMem | SrcImmByte | ModRM,
 	0, ImplicitOps | Stack, 0, 0,
@@ -169,17 +179,20 @@ static u16 opcode_table[256] = {
 	/* 0xD8 - 0xDF */
 	0, 0, 0, 0, 0, 0, 0, 0,
 	/* 0xE0 - 0xE7 */
-	0, 0, 0, 0, 0, 0, 0, 0,
+	0, 0, 0, 0,
+	SrcNone | ByteOp | ImplicitOps, SrcNone | ImplicitOps,
+	SrcNone | ByteOp | ImplicitOps, SrcNone | ImplicitOps,
 	/* 0xE8 - 0xEF */
 	ImplicitOps | Stack, SrcImm | ImplicitOps,
 	ImplicitOps, SrcImmByte | ImplicitOps,
-	0, 0, 0, 0,
+	SrcNone | ByteOp | ImplicitOps, SrcNone | ImplicitOps,
+	SrcNone | ByteOp | ImplicitOps, SrcNone | ImplicitOps,
 	/* 0xF0 - 0xF7 */
 	0, 0, 0, 0,
 	ImplicitOps, ImplicitOps, Group | Group3_Byte, Group | Group3,
 	/* 0xF8 - 0xFF */
 	ImplicitOps, 0, ImplicitOps, ImplicitOps,
-	0, 0, Group | Group4, Group | Group5,
+	ImplicitOps, ImplicitOps, Group | Group4, Group | Group5,
 };
 
 static u16 twobyte_table[256] = {
@@ -268,15 +281,16 @@ static u16 group_table[] = {
 	ByteOp | DstMem | SrcNone | ModRM, ByteOp | DstMem | SrcNone | ModRM,
 	0, 0, 0, 0,
 	[Group3*8] =
-	DstMem | SrcImm | ModRM | SrcImm, 0,
-	DstMem | SrcNone | ModRM, ByteOp | DstMem | SrcNone | ModRM,
+	DstMem | SrcImm | ModRM, 0,
+	DstMem | SrcNone | ModRM, DstMem | SrcNone | ModRM,
 	0, 0, 0, 0,
 	[Group4*8] =
 	ByteOp | DstMem | SrcNone | ModRM, ByteOp | DstMem | SrcNone | ModRM,
 	0, 0, 0, 0, 0, 0,
 	[Group5*8] =
-	DstMem | SrcNone | ModRM, DstMem | SrcNone | ModRM, 0, 0,
-	SrcMem | ModRM, 0, SrcMem | ModRM | Stack, 0,
+	DstMem | SrcNone | ModRM, DstMem | SrcNone | ModRM,
+	SrcMem | ModRM | Stack, 0,
+	SrcMem | ModRM | Stack, 0, SrcMem | ModRM | Stack, 0,
 	[Group7*8] =
 	0, 0, ModRM | SrcMem, ModRM | SrcMem,
 	SrcNone | ModRM | DstMem | Mov, 0,
@@ -839,7 +853,7 @@ x86_decode_insn(struct x86_emulate_ctxt *ctxt, struct x86_emulate_ops *ops)
 	/* Shadow copy of register state. Committed on successful emulation. */
 
 	memset(c, 0, sizeof(struct decode_cache));
-	c->eip = ctxt->vcpu->arch.rip;
+	c->eip = kvm_rip_read(ctxt->vcpu);
 	ctxt->cs_base = seg_base(ctxt, VCPU_SREG_CS);
 	memcpy(c->regs, ctxt->vcpu->arch.regs, sizeof c->regs);
 
@@ -1048,6 +1062,23 @@ done_prefixes:
 		}
 		c->dst.type = OP_MEM;
 		break;
+	case DstAcc:
+		c->dst.type = OP_REG;
+		c->dst.bytes = c->op_bytes;
+		c->dst.ptr = &c->regs[VCPU_REGS_RAX];
+		switch (c->op_bytes) {
+			case 1:
+				c->dst.val = *(u8 *)c->dst.ptr;
+				break;
+			case 2:
+				c->dst.val = *(u16 *)c->dst.ptr;
+				break;
+			case 4:
+				c->dst.val = *(u32 *)c->dst.ptr;
+				break;
+		}
+		c->dst.orig_val = c->dst.val;
+		break;
 	}
 
 	if (c->rip_relative)
@@ -1151,6 +1182,14 @@ static inline int emulate_grp45(struct x86_emulate_ctxt *ctxt,
 	case 1:	/* dec */
 		emulate_1op("dec", c->dst, ctxt->eflags);
 		break;
+	case 2: /* call near abs */ {
+		long int old_eip;
+		old_eip = c->eip;
+		c->eip = c->src.val;
+		c->src.val = old_eip;
+		emulate_push(ctxt);
+		break;
+	}
 	case 4: /* jmp abs */
 		c->eip = c->src.val;
 		break;
@@ -1251,6 +1290,8 @@ x86_emulate_insn(struct x86_emulate_ctxt *ctxt, struct x86_emulate_ops *ops)
 	u64 msr_data;
 	unsigned long saved_eip = 0;
 	struct decode_cache *c = &ctxt->decode;
+	unsigned int port;
+	int io_dir_in;
 	int rc = 0;
 
 	/* Shadow copy of register state. Committed on successful emulation.
@@ -1267,7 +1308,7 @@ x86_emulate_insn(struct x86_emulate_ctxt *ctxt, struct x86_emulate_ops *ops)
 	if (c->rep_prefix && (c->d & String)) {
 		/* All REP prefixes have the same first termination condition */
 		if (c->regs[VCPU_REGS_RCX] == 0) {
-			ctxt->vcpu->arch.rip = c->eip;
+			kvm_rip_write(ctxt->vcpu, c->eip);
 			goto done;
 		}
 		/* The second termination condition only applies for REPE
@@ -1281,17 +1322,17 @@ x86_emulate_insn(struct x86_emulate_ctxt *ctxt, struct x86_emulate_ops *ops)
 				(c->b == 0xae) || (c->b == 0xaf)) {
 			if ((c->rep_prefix == REPE_PREFIX) &&
 				((ctxt->eflags & EFLG_ZF) == 0)) {
-					ctxt->vcpu->arch.rip = c->eip;
+					kvm_rip_write(ctxt->vcpu, c->eip);
 					goto done;
 			}
 			if ((c->rep_prefix == REPNE_PREFIX) &&
 				((ctxt->eflags & EFLG_ZF) == EFLG_ZF)) {
-				ctxt->vcpu->arch.rip = c->eip;
+				kvm_rip_write(ctxt->vcpu, c->eip);
 				goto done;
 			}
 		}
 		c->regs[VCPU_REGS_RCX]--;
-		c->eip = ctxt->vcpu->arch.rip;
+		c->eip = kvm_rip_read(ctxt->vcpu);
 	}
 
 	if (c->src.type == OP_MEM) {
@@ -1351,27 +1392,10 @@ special_insn:
 	      sbb:		/* sbb */
 		emulate_2op_SrcV("sbb", c->src, c->dst, ctxt->eflags);
 		break;
-	case 0x20 ... 0x23:
+	case 0x20 ... 0x25:
 	      and:		/* and */
 		emulate_2op_SrcV("and", c->src, c->dst, ctxt->eflags);
 		break;
-	case 0x24:              /* and al imm8 */
-		c->dst.type = OP_REG;
-		c->dst.ptr = &c->regs[VCPU_REGS_RAX];
-		c->dst.val = *(u8 *)c->dst.ptr;
-		c->dst.bytes = 1;
-		c->dst.orig_val = c->dst.val;
-		goto and;
-	case 0x25:              /* and ax imm16, or eax imm32 */
-		c->dst.type = OP_REG;
-		c->dst.bytes = c->op_bytes;
-		c->dst.ptr = &c->regs[VCPU_REGS_RAX];
-		if (c->op_bytes == 2)
-			c->dst.val = *(u16 *)c->dst.ptr;
-		else
-			c->dst.val = *(u32 *)c->dst.ptr;
-		c->dst.orig_val = c->dst.val;
-		goto and;
 	case 0x28 ... 0x2d:
 	      sub:		/* sub */
 		emulate_2op_SrcV("sub", c->src, c->dst, ctxt->eflags);
@@ -1659,7 +1683,7 @@ special_insn:
 	case 0xae ... 0xaf:	/* scas */
 		DPRINTF("Urk! I don't handle SCAS.\n");
 		goto cannot_emulate;
-	case 0xb8: /* mov r, imm */
+	case 0xb0 ... 0xbf: /* mov r, imm */
 		goto mov;
 	case 0xc0 ... 0xc1:
 		emulate_grp2(ctxt);
@@ -1679,6 +1703,16 @@ special_insn:
 		c->src.val = c->regs[VCPU_REGS_RCX];
 		emulate_grp2(ctxt);
 		break;
+	case 0xe4: 	/* inb */
+	case 0xe5: 	/* in */
+		port = insn_fetch(u8, 1, c->eip);
+		io_dir_in = 1;
+		goto do_io;
+	case 0xe6: /* outb */
+	case 0xe7: /* out */
+		port = insn_fetch(u8, 1, c->eip);
+		io_dir_in = 0;
+		goto do_io;
 	case 0xe8: /* call (near) */ {
 		long int rel;
 		switch (c->op_bytes) {
@@ -1729,6 +1763,22 @@ special_insn:
 		jmp_rel(c, c->src.val);
 		c->dst.type = OP_NONE; /* Disable writeback. */
 		break;
+	case 0xec: /* in al,dx */
+	case 0xed: /* in (e/r)ax,dx */
+		port = c->regs[VCPU_REGS_RDX];
+		io_dir_in = 1;
+		goto do_io;
+	case 0xee: /* out al,dx */
+	case 0xef: /* out (e/r)ax,dx */
+		port = c->regs[VCPU_REGS_RDX];
+		io_dir_in = 0;
+	do_io:	if (kvm_emulate_pio(ctxt->vcpu, NULL, io_dir_in,
+				   (c->d & ByteOp) ? 1 : c->op_bytes,
+				   port) != 0) {
+			c->eip = saved_eip;
+			goto cannot_emulate;
+		}
+		return 0;
 	case 0xf4:              /* hlt */
 		ctxt->vcpu->arch.halt_request = 1;
 		break;
@@ -1754,6 +1804,14 @@ special_insn:
 		ctxt->eflags |= X86_EFLAGS_IF;
 		c->dst.type = OP_NONE;	/* Disable writeback. */
 		break;
+	case 0xfc: /* cld */
+		ctxt->eflags &= ~EFLG_DF;
+		c->dst.type = OP_NONE;	/* Disable writeback. */
+		break;
+	case 0xfd: /* std */
+		ctxt->eflags |= EFLG_DF;
+		c->dst.type = OP_NONE;	/* Disable writeback. */
+		break;
 	case 0xfe ... 0xff:	/* Grp4/Grp5 */
 		rc = emulate_grp45(ctxt, ops);
 		if (rc != 0)
@@ -1768,7 +1826,7 @@ writeback:
 
 	/* Commit shadow register state. */
 	memcpy(ctxt->vcpu->arch.regs, c->regs, sizeof c->regs);
-	ctxt->vcpu->arch.rip = c->eip;
+	kvm_rip_write(ctxt->vcpu, c->eip);
 
 done:
 	if (rc == X86EMUL_UNHANDLEABLE) {
@@ -1793,7 +1851,7 @@ twobyte_insn:
 				goto done;
 
 			/* Let the processor re-execute the fixed hypercall */
-			c->eip = ctxt->vcpu->arch.rip;
+			c->eip = kvm_rip_read(ctxt->vcpu);
 			/* Disable writeback. */
 			c->dst.type = OP_NONE;
 			break;
@@ -1889,7 +1947,7 @@ twobyte_insn:
 		rc = kvm_set_msr(ctxt->vcpu, c->regs[VCPU_REGS_RCX], msr_data);
 		if (rc) {
 			kvm_inject_gp(ctxt->vcpu, 0);
-			c->eip = ctxt->vcpu->arch.rip;
+			c->eip = kvm_rip_read(ctxt->vcpu);
 		}
 		rc = X86EMUL_CONTINUE;
 		c->dst.type = OP_NONE;
@@ -1899,7 +1957,7 @@ twobyte_insn:
 		rc = kvm_get_msr(ctxt->vcpu, c->regs[VCPU_REGS_RCX], &msr_data);
 		if (rc) {
 			kvm_inject_gp(ctxt->vcpu, 0);
-			c->eip = ctxt->vcpu->arch.rip;
+			c->eip = kvm_rip_read(ctxt->vcpu);
 		} else {
 			c->regs[VCPU_REGS_RAX] = (u32)msr_data;
 			c->regs[VCPU_REGS_RDX] = msr_data >> 32;