Merge tag 'arm64-upstream' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux

Pull arm64 updates from Catalin Marinas:
 "arm64 updates for 3.20:

   - reimplementation of the virtual remapping of UEFI Runtime Services
     in a way that is stable across kexec
   - emulation of the "setend" instruction for 32-bit tasks (user
     endianness switching trapped in the kernel, SCTLR_EL1.E0E bit set
     accordingly)
   - compat_sys_call_table implemented in C (from asm) and made it a
     constant array together with sys_call_table
   - export CPU cache information via /sys (like other architectures)
   - DMA API implementation clean-up in preparation for IOMMU support
   - macros clean-up for KVM
   - dropped some unnecessary cache+tlb maintenance
   - CONFIG_ARM64_CPU_SUSPEND clean-up
   - defconfig update (CPU_IDLE)

  The EFI changes going via the arm64 tree have been acked by Matt
  Fleming.  There is also a patch adding sys_*stat64 prototypes to
  include/linux/syscalls.h, acked by Andrew Morton"

* tag 'arm64-upstream' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux: (47 commits)
  arm64: compat: Remove incorrect comment in compat_siginfo
  arm64: Fix section mismatch on alloc_init_p[mu]d()
  arm64: Avoid breakage caused by .altmacro in fpsimd save/restore macros
  arm64: mm: use *_sect to check for section maps
  arm64: drop unnecessary cache+tlb maintenance
  arm64:mm: free the useless initial page table
  arm64: Enable CPU_IDLE in defconfig
  arm64: kernel: remove ARM64_CPU_SUSPEND config option
  arm64: make sys_call_table const
  arm64: Remove asm/syscalls.h
  arm64: Implement the compat_sys_call_table in C
  syscalls: Declare sys_*stat64 prototypes if __ARCH_WANT_(COMPAT_)STAT64
  compat: Declare compat_sys_sigpending and compat_sys_sigprocmask prototypes
  arm64: uapi: expose our struct ucontext to the uapi headers
  smp, ARM64: Kill SMP single function call interrupt
  arm64: Emulate SETEND for AArch32 tasks
  arm64: Consolidate hotplug notifier for instruction emulation
  arm64: Track system support for mixed endian EL0
  arm64: implement generic IOMMU configuration
  arm64: Combine coherent and non-coherent swiotlb dma_ops
  ...

5 files changed, 53 insertions, 45 deletions

diff --git a/arch/arm64/kvm/emulate.c b/arch/arm64/kvm/emulate.c
index 124418d17049..f87d8fbaa48d 100644
--- a/arch/arm64/kvm/emulate.c
+++ b/arch/arm64/kvm/emulate.c
@@ -22,6 +22,7 @@
  */
 
 #include <linux/kvm_host.h>
+#include <asm/esr.h>
 #include <asm/kvm_emulate.h>
 
 /*
@@ -55,8 +56,8 @@ static int kvm_vcpu_get_condition(const struct kvm_vcpu *vcpu)
 {
 	u32 esr = kvm_vcpu_get_hsr(vcpu);
 
-	if (esr & ESR_EL2_CV)
-		return (esr & ESR_EL2_COND) >> ESR_EL2_COND_SHIFT;
+	if (esr & ESR_ELx_CV)
+		return (esr & ESR_ELx_COND_MASK) >> ESR_ELx_COND_SHIFT;
 
 	return -1;
 }
diff --git a/arch/arm64/kvm/handle_exit.c b/arch/arm64/kvm/handle_exit.c
index 34b8bd0711e9..29b184a8f3f8 100644
--- a/arch/arm64/kvm/handle_exit.c
+++ b/arch/arm64/kvm/handle_exit.c
@@ -21,8 +21,10 @@
 
 #include <linux/kvm.h>
 #include <linux/kvm_host.h>
-#include <asm/kvm_emulate.h>
+
+#include <asm/esr.h>
 #include <asm/kvm_coproc.h>
+#include <asm/kvm_emulate.h>
 #include <asm/kvm_mmu.h>
 #include <asm/kvm_psci.h>
 
@@ -61,7 +63,7 @@ static int handle_smc(struct kvm_vcpu *vcpu, struct kvm_run *run)
  */
 static int kvm_handle_wfx(struct kvm_vcpu *vcpu, struct kvm_run *run)
 {
-	if (kvm_vcpu_get_hsr(vcpu) & ESR_EL2_EC_WFI_ISS_WFE)
+	if (kvm_vcpu_get_hsr(vcpu) & ESR_ELx_WFx_ISS_WFE)
 		kvm_vcpu_on_spin(vcpu);
 	else
 		kvm_vcpu_block(vcpu);
@@ -72,29 +74,30 @@ static int kvm_handle_wfx(struct kvm_vcpu *vcpu, struct kvm_run *run)
 }
 
 static exit_handle_fn arm_exit_handlers[] = {
-	[ESR_EL2_EC_WFI]	= kvm_handle_wfx,
-	[ESR_EL2_EC_CP15_32]	= kvm_handle_cp15_32,
-	[ESR_EL2_EC_CP15_64]	= kvm_handle_cp15_64,
-	[ESR_EL2_EC_CP14_MR]	= kvm_handle_cp14_32,
-	[ESR_EL2_EC_CP14_LS]	= kvm_handle_cp14_load_store,
-	[ESR_EL2_EC_CP14_64]	= kvm_handle_cp14_64,
-	[ESR_EL2_EC_HVC32]	= handle_hvc,
-	[ESR_EL2_EC_SMC32]	= handle_smc,
-	[ESR_EL2_EC_HVC64]	= handle_hvc,
-	[ESR_EL2_EC_SMC64]	= handle_smc,
-	[ESR_EL2_EC_SYS64]	= kvm_handle_sys_reg,
-	[ESR_EL2_EC_IABT]	= kvm_handle_guest_abort,
-	[ESR_EL2_EC_DABT]	= kvm_handle_guest_abort,
+	[ESR_ELx_EC_WFx]	= kvm_handle_wfx,
+	[ESR_ELx_EC_CP15_32]	= kvm_handle_cp15_32,
+	[ESR_ELx_EC_CP15_64]	= kvm_handle_cp15_64,
+	[ESR_ELx_EC_CP14_MR]	= kvm_handle_cp14_32,
+	[ESR_ELx_EC_CP14_LS]	= kvm_handle_cp14_load_store,
+	[ESR_ELx_EC_CP14_64]	= kvm_handle_cp14_64,
+	[ESR_ELx_EC_HVC32]	= handle_hvc,
+	[ESR_ELx_EC_SMC32]	= handle_smc,
+	[ESR_ELx_EC_HVC64]	= handle_hvc,
+	[ESR_ELx_EC_SMC64]	= handle_smc,
+	[ESR_ELx_EC_SYS64]	= kvm_handle_sys_reg,
+	[ESR_ELx_EC_IABT_LOW]	= kvm_handle_guest_abort,
+	[ESR_ELx_EC_DABT_LOW]	= kvm_handle_guest_abort,
 };
 
 static exit_handle_fn kvm_get_exit_handler(struct kvm_vcpu *vcpu)
 {
-	u8 hsr_ec = kvm_vcpu_trap_get_class(vcpu);
+	u32 hsr = kvm_vcpu_get_hsr(vcpu);
+	u8 hsr_ec = hsr >> ESR_ELx_EC_SHIFT;
 
 	if (hsr_ec >= ARRAY_SIZE(arm_exit_handlers) ||
 	    !arm_exit_handlers[hsr_ec]) {
-		kvm_err("Unknown exception class: hsr: %#08x\n",
-			(unsigned int)kvm_vcpu_get_hsr(vcpu));
+		kvm_err("Unknown exception class: hsr: %#08x -- %s\n",
+			hsr, esr_get_class_string(hsr));
 		BUG();
 	}
 
diff --git a/arch/arm64/kvm/hyp.S b/arch/arm64/kvm/hyp.S
index c3ca89c27c6b..9bff671cc561 100644
--- a/arch/arm64/kvm/hyp.S
+++ b/arch/arm64/kvm/hyp.S
@@ -17,15 +17,16 @@
 
 #include <linux/linkage.h>
 
-#include <asm/assembler.h>
-#include <asm/memory.h>
 #include <asm/asm-offsets.h>
+#include <asm/assembler.h>
 #include <asm/debug-monitors.h>
+#include <asm/esr.h>
 #include <asm/fpsimdmacros.h>
 #include <asm/kvm.h>
-#include <asm/kvm_asm.h>
 #include <asm/kvm_arm.h>
+#include <asm/kvm_asm.h>
 #include <asm/kvm_mmu.h>
+#include <asm/memory.h>
 
 #define CPU_GP_REG_OFFSET(x)	(CPU_GP_REGS + x)
 #define CPU_XREG_OFFSET(x)	CPU_GP_REG_OFFSET(CPU_USER_PT_REGS + 8*x)
@@ -1141,9 +1142,9 @@ el1_sync:					// Guest trapped into EL2
 	push	x2, x3
 
 	mrs	x1, esr_el2
-	lsr	x2, x1, #ESR_EL2_EC_SHIFT
+	lsr	x2, x1, #ESR_ELx_EC_SHIFT
 
-	cmp	x2, #ESR_EL2_EC_HVC64
+	cmp	x2, #ESR_ELx_EC_HVC64
 	b.ne	el1_trap
 
 	mrs	x3, vttbr_el2			// If vttbr is valid, the 64bit guest
@@ -1178,13 +1179,13 @@ el1_trap:
 	 * x1: ESR
 	 * x2: ESR_EC
 	 */
-	cmp	x2, #ESR_EL2_EC_DABT
-	mov	x0, #ESR_EL2_EC_IABT
+	cmp	x2, #ESR_ELx_EC_DABT_LOW
+	mov	x0, #ESR_ELx_EC_IABT_LOW
 	ccmp	x2, x0, #4, ne
 	b.ne	1f		// Not an abort we care about
 
 	/* This is an abort. Check for permission fault */
-	and	x2, x1, #ESR_EL2_FSC_TYPE
+	and	x2, x1, #ESR_ELx_FSC_TYPE
 	cmp	x2, #FSC_PERM
 	b.ne	1f		// Not a permission fault
 
diff --git a/arch/arm64/kvm/inject_fault.c b/arch/arm64/kvm/inject_fault.c
index 81a02a8762b0..f02530e726f6 100644
--- a/arch/arm64/kvm/inject_fault.c
+++ b/arch/arm64/kvm/inject_fault.c
@@ -118,27 +118,27 @@ static void inject_abt64(struct kvm_vcpu *vcpu, bool is_iabt, unsigned long addr
 	 * instruction set. Report an external synchronous abort.
 	 */
 	if (kvm_vcpu_trap_il_is32bit(vcpu))
-		esr |= ESR_EL1_IL;
+		esr |= ESR_ELx_IL;
 
 	/*
 	 * Here, the guest runs in AArch64 mode when in EL1. If we get
 	 * an AArch32 fault, it means we managed to trap an EL0 fault.
 	 */
 	if (is_aarch32 || (cpsr & PSR_MODE_MASK) == PSR_MODE_EL0t)
-		esr |= (ESR_EL1_EC_IABT_EL0 << ESR_EL1_EC_SHIFT);
+		esr |= (ESR_ELx_EC_IABT_LOW << ESR_ELx_EC_SHIFT);
 	else
-		esr |= (ESR_EL1_EC_IABT_EL1 << ESR_EL1_EC_SHIFT);
+		esr |= (ESR_ELx_EC_IABT_CUR << ESR_ELx_EC_SHIFT);
 
 	if (!is_iabt)
-		esr |= ESR_EL1_EC_DABT_EL0;
+		esr |= ESR_ELx_EC_DABT_LOW;
 
-	vcpu_sys_reg(vcpu, ESR_EL1) = esr | ESR_EL2_EC_xABT_xFSR_EXTABT;
+	vcpu_sys_reg(vcpu, ESR_EL1) = esr | ESR_ELx_FSC_EXTABT;
 }
 
 static void inject_undef64(struct kvm_vcpu *vcpu)
 {
 	unsigned long cpsr = *vcpu_cpsr(vcpu);
-	u32 esr = (ESR_EL1_EC_UNKNOWN << ESR_EL1_EC_SHIFT);
+	u32 esr = (ESR_ELx_EC_UNKNOWN << ESR_ELx_EC_SHIFT);
 
 	*vcpu_spsr(vcpu) = cpsr;
 	*vcpu_elr_el1(vcpu) = *vcpu_pc(vcpu);
@@ -151,7 +151,7 @@ static void inject_undef64(struct kvm_vcpu *vcpu)
 	 * set.
 	 */
 	if (kvm_vcpu_trap_il_is32bit(vcpu))
-		esr |= ESR_EL1_IL;
+		esr |= ESR_ELx_IL;
 
 	vcpu_sys_reg(vcpu, ESR_EL1) = esr;
 }
diff --git a/arch/arm64/kvm/sys_regs.c b/arch/arm64/kvm/sys_regs.c
index f31e8bb2bc5b..b96afdf6cee4 100644
--- a/arch/arm64/kvm/sys_regs.c
+++ b/arch/arm64/kvm/sys_regs.c
@@ -20,17 +20,20 @@
  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  */
 
-#include <linux/mm.h>
 #include <linux/kvm_host.h>
+#include <linux/mm.h>
 #include <linux/uaccess.h>
-#include <asm/kvm_arm.h>
-#include <asm/kvm_host.h>
-#include <asm/kvm_emulate.h>
-#include <asm/kvm_coproc.h>
-#include <asm/kvm_mmu.h>
+
 #include <asm/cacheflush.h>
 #include <asm/cputype.h>
 #include <asm/debug-monitors.h>
+#include <asm/esr.h>
+#include <asm/kvm_arm.h>
+#include <asm/kvm_coproc.h>
+#include <asm/kvm_emulate.h>
+#include <asm/kvm_host.h>
+#include <asm/kvm_mmu.h>
+
 #include <trace/events/kvm.h>
 
 #include "sys_regs.h"
@@ -760,12 +763,12 @@ static void unhandled_cp_access(struct kvm_vcpu *vcpu,
 	int cp;
 
 	switch(hsr_ec) {
-	case ESR_EL2_EC_CP15_32:
-	case ESR_EL2_EC_CP15_64:
+	case ESR_ELx_EC_CP15_32:
+	case ESR_ELx_EC_CP15_64:
 		cp = 15;
 		break;
-	case ESR_EL2_EC_CP14_MR:
-	case ESR_EL2_EC_CP14_64:
+	case ESR_ELx_EC_CP14_MR:
+	case ESR_ELx_EC_CP14_64:
 		cp = 14;
 		break;
 	default: