Merge tag 'kvmarm-fixes-for-5.3' of git://git.kernel.org/pub/scm/linux/kernel/git/kvmarm/kvmarm into HEAD

KVM/arm fixes for 5.3

- A bunch of switch/case fall-through annotation, fixing one actual bug
- Fix PMU reset bug
- Add missing exception class debug strings

12 files changed, 109 insertions, 121 deletions

diff --git a/arch/s390/Kconfig b/arch/s390/Kconfig
index 5d8570ed6cab..a4ad2733eedf 100644
--- a/arch/s390/Kconfig
+++ b/arch/s390/Kconfig
@@ -189,6 +189,7 @@ config S390
 	select VIRT_CPU_ACCOUNTING
 	select ARCH_HAS_SCALED_CPUTIME
 	select HAVE_NMI
+	select ARCH_HAS_FORCE_DMA_UNENCRYPTED
 	select SWIOTLB
 	select GENERIC_ALLOCATOR
 
diff --git a/arch/s390/appldata/appldata_base.c b/arch/s390/appldata/appldata_base.c
index e4b58240ec53..aa738cad1338 100644
--- a/arch/s390/appldata/appldata_base.c
+++ b/arch/s390/appldata/appldata_base.c
@@ -220,15 +220,13 @@ appldata_timer_handler(struct ctl_table *ctl, int write,
 			   void __user *buffer, size_t *lenp, loff_t *ppos)
 {
 	int timer_active = appldata_timer_active;
-	int zero = 0;
-	int one = 1;
 	int rc;
 	struct ctl_table ctl_entry = {
 		.procname	= ctl->procname,
 		.data		= &timer_active,
 		.maxlen		= sizeof(int),
-		.extra1		= &zero,
-		.extra2		= &one,
+		.extra1		= SYSCTL_ZERO,
+		.extra2		= SYSCTL_ONE,
 	};
 
 	rc = proc_douintvec_minmax(&ctl_entry, write, buffer, lenp, ppos);
@@ -255,13 +253,12 @@ appldata_interval_handler(struct ctl_table *ctl, int write,
 			   void __user *buffer, size_t *lenp, loff_t *ppos)
 {
 	int interval = appldata_interval;
-	int one = 1;
 	int rc;
 	struct ctl_table ctl_entry = {
 		.procname	= ctl->procname,
 		.data		= &interval,
 		.maxlen		= sizeof(int),
-		.extra1		= &one,
+		.extra1		= SYSCTL_ONE,
 	};
 
 	rc = proc_dointvec_minmax(&ctl_entry, write, buffer, lenp, ppos);
@@ -289,13 +286,11 @@ appldata_generic_handler(struct ctl_table *ctl, int write,
 	struct list_head *lh;
 	int rc, found;
 	int active;
-	int zero = 0;
-	int one = 1;
 	struct ctl_table ctl_entry = {
 		.data		= &active,
 		.maxlen		= sizeof(int),
-		.extra1		= &zero,
-		.extra2		= &one,
+		.extra1		= SYSCTL_ZERO,
+		.extra2		= SYSCTL_ONE,
 	};
 
 	found = 0;
diff --git a/arch/s390/include/asm/ctl_reg.h b/arch/s390/include/asm/ctl_reg.h
index 0cf6b53587db..60f907516335 100644
--- a/arch/s390/include/asm/ctl_reg.h
+++ b/arch/s390/include/asm/ctl_reg.h
@@ -8,27 +8,27 @@
 #ifndef __ASM_CTL_REG_H
 #define __ASM_CTL_REG_H
 
-#include <linux/const.h>
-
-#define CR0_CLOCK_COMPARATOR_SIGN	_BITUL(63 - 10)
-#define CR0_EMERGENCY_SIGNAL_SUBMASK	_BITUL(63 - 49)
-#define CR0_EXTERNAL_CALL_SUBMASK	_BITUL(63 - 50)
-#define CR0_CLOCK_COMPARATOR_SUBMASK	_BITUL(63 - 52)
-#define CR0_CPU_TIMER_SUBMASK		_BITUL(63 - 53)
-#define CR0_SERVICE_SIGNAL_SUBMASK	_BITUL(63 - 54)
-#define CR0_UNUSED_56			_BITUL(63 - 56)
-#define CR0_INTERRUPT_KEY_SUBMASK	_BITUL(63 - 57)
-#define CR0_MEASUREMENT_ALERT_SUBMASK	_BITUL(63 - 58)
-
-#define CR2_GUARDED_STORAGE		_BITUL(63 - 59)
-
-#define CR14_UNUSED_32			_BITUL(63 - 32)
-#define CR14_UNUSED_33			_BITUL(63 - 33)
-#define CR14_CHANNEL_REPORT_SUBMASK	_BITUL(63 - 35)
-#define CR14_RECOVERY_SUBMASK		_BITUL(63 - 36)
-#define CR14_DEGRADATION_SUBMASK	_BITUL(63 - 37)
-#define CR14_EXTERNAL_DAMAGE_SUBMASK	_BITUL(63 - 38)
-#define CR14_WARNING_SUBMASK		_BITUL(63 - 39)
+#include <linux/bits.h>
+
+#define CR0_CLOCK_COMPARATOR_SIGN	BIT(63 - 10)
+#define CR0_EMERGENCY_SIGNAL_SUBMASK	BIT(63 - 49)
+#define CR0_EXTERNAL_CALL_SUBMASK	BIT(63 - 50)
+#define CR0_CLOCK_COMPARATOR_SUBMASK	BIT(63 - 52)
+#define CR0_CPU_TIMER_SUBMASK		BIT(63 - 53)
+#define CR0_SERVICE_SIGNAL_SUBMASK	BIT(63 - 54)
+#define CR0_UNUSED_56			BIT(63 - 56)
+#define CR0_INTERRUPT_KEY_SUBMASK	BIT(63 - 57)
+#define CR0_MEASUREMENT_ALERT_SUBMASK	BIT(63 - 58)
+
+#define CR2_GUARDED_STORAGE		BIT(63 - 59)
+
+#define CR14_UNUSED_32			BIT(63 - 32)
+#define CR14_UNUSED_33			BIT(63 - 33)
+#define CR14_CHANNEL_REPORT_SUBMASK	BIT(63 - 35)
+#define CR14_RECOVERY_SUBMASK		BIT(63 - 36)
+#define CR14_DEGRADATION_SUBMASK	BIT(63 - 37)
+#define CR14_EXTERNAL_DAMAGE_SUBMASK	BIT(63 - 38)
+#define CR14_WARNING_SUBMASK		BIT(63 - 39)
 
 #ifndef __ASSEMBLY__
 
diff --git a/arch/s390/include/asm/nmi.h b/arch/s390/include/asm/nmi.h
index 1e5dc4537bf2..b160da8fa14b 100644
--- a/arch/s390/include/asm/nmi.h
+++ b/arch/s390/include/asm/nmi.h
@@ -12,7 +12,7 @@
 #ifndef _ASM_S390_NMI_H
 #define _ASM_S390_NMI_H
 
-#include <linux/const.h>
+#include <linux/bits.h>
 #include <linux/types.h>
 
 #define MCIC_SUBCLASS_MASK	(1ULL<<63 | 1ULL<<62 | 1ULL<<61 | \
@@ -20,15 +20,15 @@
 				1ULL<<55 | 1ULL<<54 | 1ULL<<53 | \
 				1ULL<<52 | 1ULL<<47 | 1ULL<<46 | \
 				1ULL<<45 | 1ULL<<44)
-#define MCCK_CODE_SYSTEM_DAMAGE		_BITUL(63)
-#define MCCK_CODE_EXT_DAMAGE		_BITUL(63 - 5)
-#define MCCK_CODE_CP			_BITUL(63 - 9)
-#define MCCK_CODE_CPU_TIMER_VALID	_BITUL(63 - 46)
-#define MCCK_CODE_PSW_MWP_VALID		_BITUL(63 - 20)
-#define MCCK_CODE_PSW_IA_VALID		_BITUL(63 - 23)
-#define MCCK_CODE_CR_VALID		_BITUL(63 - 29)
-#define MCCK_CODE_GS_VALID		_BITUL(63 - 36)
-#define MCCK_CODE_FC_VALID		_BITUL(63 - 43)
+#define MCCK_CODE_SYSTEM_DAMAGE		BIT(63)
+#define MCCK_CODE_EXT_DAMAGE		BIT(63 - 5)
+#define MCCK_CODE_CP			BIT(63 - 9)
+#define MCCK_CODE_CPU_TIMER_VALID	BIT(63 - 46)
+#define MCCK_CODE_PSW_MWP_VALID		BIT(63 - 20)
+#define MCCK_CODE_PSW_IA_VALID		BIT(63 - 23)
+#define MCCK_CODE_CR_VALID		BIT(63 - 29)
+#define MCCK_CODE_GS_VALID		BIT(63 - 36)
+#define MCCK_CODE_FC_VALID		BIT(63 - 43)
 
 #ifndef __ASSEMBLY__
 
diff --git a/arch/s390/include/asm/processor.h b/arch/s390/include/asm/processor.h
index 14883b1562e0..d56c519bc696 100644
--- a/arch/s390/include/asm/processor.h
+++ b/arch/s390/include/asm/processor.h
@@ -12,7 +12,7 @@
 #ifndef __ASM_S390_PROCESSOR_H
 #define __ASM_S390_PROCESSOR_H
 
-#include <linux/const.h>
+#include <linux/bits.h>
 
 #define CIF_MCCK_PENDING	0	/* machine check handling is pending */
 #define CIF_ASCE_PRIMARY	1	/* primary asce needs fixup / uaccess */
@@ -24,15 +24,15 @@
 #define CIF_MCCK_GUEST		7	/* machine check happening in guest */
 #define CIF_DEDICATED_CPU	8	/* this CPU is dedicated */
 
-#define _CIF_MCCK_PENDING	_BITUL(CIF_MCCK_PENDING)
-#define _CIF_ASCE_PRIMARY	_BITUL(CIF_ASCE_PRIMARY)
-#define _CIF_ASCE_SECONDARY	_BITUL(CIF_ASCE_SECONDARY)
-#define _CIF_NOHZ_DELAY		_BITUL(CIF_NOHZ_DELAY)
-#define _CIF_FPU		_BITUL(CIF_FPU)
-#define _CIF_IGNORE_IRQ		_BITUL(CIF_IGNORE_IRQ)
-#define _CIF_ENABLED_WAIT	_BITUL(CIF_ENABLED_WAIT)
-#define _CIF_MCCK_GUEST		_BITUL(CIF_MCCK_GUEST)
-#define _CIF_DEDICATED_CPU	_BITUL(CIF_DEDICATED_CPU)
+#define _CIF_MCCK_PENDING	BIT(CIF_MCCK_PENDING)
+#define _CIF_ASCE_PRIMARY	BIT(CIF_ASCE_PRIMARY)
+#define _CIF_ASCE_SECONDARY	BIT(CIF_ASCE_SECONDARY)
+#define _CIF_NOHZ_DELAY		BIT(CIF_NOHZ_DELAY)
+#define _CIF_FPU		BIT(CIF_FPU)
+#define _CIF_IGNORE_IRQ		BIT(CIF_IGNORE_IRQ)
+#define _CIF_ENABLED_WAIT	BIT(CIF_ENABLED_WAIT)
+#define _CIF_MCCK_GUEST		BIT(CIF_MCCK_GUEST)
+#define _CIF_DEDICATED_CPU	BIT(CIF_DEDICATED_CPU)
 
 #ifndef __ASSEMBLY__
 
diff --git a/arch/s390/include/asm/ptrace.h b/arch/s390/include/asm/ptrace.h
index 6f70d81c40f2..f009a13afe71 100644
--- a/arch/s390/include/asm/ptrace.h
+++ b/arch/s390/include/asm/ptrace.h
@@ -7,7 +7,7 @@
 #ifndef _S390_PTRACE_H
 #define _S390_PTRACE_H
 
-#include <linux/const.h>
+#include <linux/bits.h>
 #include <uapi/asm/ptrace.h>
 
 #define PIF_SYSCALL		0	/* inside a system call */
@@ -15,10 +15,10 @@
 #define PIF_SYSCALL_RESTART	2	/* restart the current system call */
 #define PIF_GUEST_FAULT		3	/* indicates program check in sie64a */
 
-#define _PIF_SYSCALL		_BITUL(PIF_SYSCALL)
-#define _PIF_PER_TRAP		_BITUL(PIF_PER_TRAP)
-#define _PIF_SYSCALL_RESTART	_BITUL(PIF_SYSCALL_RESTART)
-#define _PIF_GUEST_FAULT	_BITUL(PIF_GUEST_FAULT)
+#define _PIF_SYSCALL		BIT(PIF_SYSCALL)
+#define _PIF_PER_TRAP		BIT(PIF_PER_TRAP)
+#define _PIF_SYSCALL_RESTART	BIT(PIF_SYSCALL_RESTART)
+#define _PIF_GUEST_FAULT	BIT(PIF_GUEST_FAULT)
 
 #ifndef __ASSEMBLY__
 
diff --git a/arch/s390/include/asm/setup.h b/arch/s390/include/asm/setup.h
index 925889d360c1..82deb8fc8319 100644
--- a/arch/s390/include/asm/setup.h
+++ b/arch/s390/include/asm/setup.h
@@ -6,7 +6,7 @@
 #ifndef _ASM_S390_SETUP_H
 #define _ASM_S390_SETUP_H
 
-#include <linux/const.h>
+#include <linux/bits.h>
 #include <uapi/asm/setup.h>
 
 #define EP_OFFSET		0x10008
@@ -21,25 +21,25 @@
  * Machine features detected in early.c
  */
 
-#define MACHINE_FLAG_VM		_BITUL(0)
-#define MACHINE_FLAG_KVM	_BITUL(1)
-#define MACHINE_FLAG_LPAR	_BITUL(2)
-#define MACHINE_FLAG_DIAG9C	_BITUL(3)
-#define MACHINE_FLAG_ESOP	_BITUL(4)
-#define MACHINE_FLAG_IDTE	_BITUL(5)
-#define MACHINE_FLAG_DIAG44	_BITUL(6)
-#define MACHINE_FLAG_EDAT1	_BITUL(7)
-#define MACHINE_FLAG_EDAT2	_BITUL(8)
-#define MACHINE_FLAG_TOPOLOGY	_BITUL(10)
-#define MACHINE_FLAG_TE		_BITUL(11)
-#define MACHINE_FLAG_TLB_LC	_BITUL(12)
-#define MACHINE_FLAG_VX		_BITUL(13)
-#define MACHINE_FLAG_TLB_GUEST	_BITUL(14)
-#define MACHINE_FLAG_NX		_BITUL(15)
-#define MACHINE_FLAG_GS		_BITUL(16)
-#define MACHINE_FLAG_SCC	_BITUL(17)
-
-#define LPP_MAGIC		_BITUL(31)
+#define MACHINE_FLAG_VM		BIT(0)
+#define MACHINE_FLAG_KVM	BIT(1)
+#define MACHINE_FLAG_LPAR	BIT(2)
+#define MACHINE_FLAG_DIAG9C	BIT(3)
+#define MACHINE_FLAG_ESOP	BIT(4)
+#define MACHINE_FLAG_IDTE	BIT(5)
+#define MACHINE_FLAG_DIAG44	BIT(6)
+#define MACHINE_FLAG_EDAT1	BIT(7)
+#define MACHINE_FLAG_EDAT2	BIT(8)
+#define MACHINE_FLAG_TOPOLOGY	BIT(10)
+#define MACHINE_FLAG_TE		BIT(11)
+#define MACHINE_FLAG_TLB_LC	BIT(12)
+#define MACHINE_FLAG_VX		BIT(13)
+#define MACHINE_FLAG_TLB_GUEST	BIT(14)
+#define MACHINE_FLAG_NX		BIT(15)
+#define MACHINE_FLAG_GS		BIT(16)
+#define MACHINE_FLAG_SCC	BIT(17)
+
+#define LPP_MAGIC		BIT(31)
 #define LPP_PID_MASK		_AC(0xffffffff, UL)
 
 /* Offsets to entry points in kernel/head.S  */
diff --git a/arch/s390/include/asm/thread_info.h b/arch/s390/include/asm/thread_info.h
index ce4e17c9aad6..e582fbe59e20 100644
--- a/arch/s390/include/asm/thread_info.h
+++ b/arch/s390/include/asm/thread_info.h
@@ -8,7 +8,7 @@
 #ifndef _ASM_THREAD_INFO_H
 #define _ASM_THREAD_INFO_H
 
-#include <linux/const.h>
+#include <linux/bits.h>
 
 /*
  * General size of kernel stacks
@@ -82,21 +82,21 @@ void arch_setup_new_exec(void);
 #define TIF_SECCOMP		26	/* secure computing */
 #define TIF_SYSCALL_TRACEPOINT	27	/* syscall tracepoint instrumentation */
 
-#define _TIF_NOTIFY_RESUME	_BITUL(TIF_NOTIFY_RESUME)
-#define _TIF_SIGPENDING		_BITUL(TIF_SIGPENDING)
-#define _TIF_NEED_RESCHED	_BITUL(TIF_NEED_RESCHED)
-#define _TIF_UPROBE		_BITUL(TIF_UPROBE)
-#define _TIF_GUARDED_STORAGE	_BITUL(TIF_GUARDED_STORAGE)
-#define _TIF_PATCH_PENDING	_BITUL(TIF_PATCH_PENDING)
-#define _TIF_ISOLATE_BP		_BITUL(TIF_ISOLATE_BP)
-#define _TIF_ISOLATE_BP_GUEST	_BITUL(TIF_ISOLATE_BP_GUEST)
-
-#define _TIF_31BIT		_BITUL(TIF_31BIT)
-#define _TIF_SINGLE_STEP	_BITUL(TIF_SINGLE_STEP)
-
-#define _TIF_SYSCALL_TRACE	_BITUL(TIF_SYSCALL_TRACE)
-#define _TIF_SYSCALL_AUDIT	_BITUL(TIF_SYSCALL_AUDIT)
-#define _TIF_SECCOMP		_BITUL(TIF_SECCOMP)
-#define _TIF_SYSCALL_TRACEPOINT	_BITUL(TIF_SYSCALL_TRACEPOINT)
+#define _TIF_NOTIFY_RESUME	BIT(TIF_NOTIFY_RESUME)
+#define _TIF_SIGPENDING		BIT(TIF_SIGPENDING)
+#define _TIF_NEED_RESCHED	BIT(TIF_NEED_RESCHED)
+#define _TIF_UPROBE		BIT(TIF_UPROBE)
+#define _TIF_GUARDED_STORAGE	BIT(TIF_GUARDED_STORAGE)
+#define _TIF_PATCH_PENDING	BIT(TIF_PATCH_PENDING)
+#define _TIF_ISOLATE_BP		BIT(TIF_ISOLATE_BP)
+#define _TIF_ISOLATE_BP_GUEST	BIT(TIF_ISOLATE_BP_GUEST)
+
+#define _TIF_31BIT		BIT(TIF_31BIT)
+#define _TIF_SINGLE_STEP	BIT(TIF_SINGLE_STEP)
+
+#define _TIF_SYSCALL_TRACE	BIT(TIF_SYSCALL_TRACE)
+#define _TIF_SYSCALL_AUDIT	BIT(TIF_SYSCALL_AUDIT)
+#define _TIF_SECCOMP		BIT(TIF_SECCOMP)
+#define _TIF_SYSCALL_TRACEPOINT	BIT(TIF_SYSCALL_TRACEPOINT)
 
 #endif /* _ASM_THREAD_INFO_H */
diff --git a/arch/s390/kernel/syscalls/syscall.tbl b/arch/s390/kernel/syscalls/syscall.tbl
index 6ebacfeaf853..a90d3e945445 100644
--- a/arch/s390/kernel/syscalls/syscall.tbl
+++ b/arch/s390/kernel/syscalls/syscall.tbl
@@ -437,3 +437,4 @@
 432  common	fsmount			sys_fsmount			sys_fsmount
 433  common	fspick			sys_fspick			sys_fspick
 434  common	pidfd_open		sys_pidfd_open			sys_pidfd_open
+# 435 reserved for clone3
diff --git a/arch/s390/kernel/topology.c b/arch/s390/kernel/topology.c
index 8964a3f60aad..2db6fb405a9a 100644
--- a/arch/s390/kernel/topology.c
+++ b/arch/s390/kernel/topology.c
@@ -587,15 +587,13 @@ static int topology_ctl_handler(struct ctl_table *ctl, int write,
 {
 	int enabled = topology_is_enabled();
 	int new_mode;
-	int zero = 0;
-	int one = 1;
 	int rc;
 	struct ctl_table ctl_entry = {
 		.procname	= ctl->procname,
 		.data		= &enabled,
 		.maxlen		= sizeof(int),
-		.extra1		= &zero,
-		.extra2		= &one,
+		.extra1		= SYSCTL_ZERO,
+		.extra2		= SYSCTL_ONE,
 	};
 
 	rc = proc_douintvec_minmax(&ctl_entry, write, buffer, lenp, ppos);
diff --git a/arch/s390/mm/fault.c b/arch/s390/mm/fault.c
index 0ba174f779da..63507662828f 100644
--- a/arch/s390/mm/fault.c
+++ b/arch/s390/mm/fault.c
@@ -67,20 +67,6 @@ static int __init fault_init(void)
 }
 early_initcall(fault_init);
 
-static inline int notify_page_fault(struct pt_regs *regs)
-{
-	int ret = 0;
-
-	/* kprobe_running() needs smp_processor_id() */
-	if (kprobes_built_in() && !user_mode(regs)) {
-		preempt_disable();
-		if (kprobe_running() && kprobe_fault_handler(regs, 14))
-			ret = 1;
-		preempt_enable();
-	}
-	return ret;
-}
-
 /*
  * Find out which address space caused the exception.
  */
@@ -412,7 +398,7 @@ static inline vm_fault_t do_exception(struct pt_regs *regs, int access)
 	 */
 	clear_pt_regs_flag(regs, PIF_PER_TRAP);
 
-	if (notify_page_fault(regs))
+	if (kprobe_page_fault(regs, 14))
 		return 0;
 
 	mm = tsk->mm;
diff --git a/arch/s390/mm/init.c b/arch/s390/mm/init.c
index f0bee6af3960..20340a03ad90 100644
--- a/arch/s390/mm/init.c
+++ b/arch/s390/mm/init.c
@@ -30,7 +30,7 @@
 #include <linux/export.h>
 #include <linux/cma.h>
 #include <linux/gfp.h>
-#include <linux/dma-mapping.h>
+#include <linux/dma-direct.h>
 #include <asm/processor.h>
 #include <linux/uaccess.h>
 #include <asm/pgtable.h>
@@ -161,6 +161,11 @@ bool sev_active(void)
 	return is_prot_virt_guest();
 }
 
+bool force_dma_unencrypted(struct device *dev)
+{
+	return sev_active();
+}
+
 /* protected virtualization */
 static void pv_init(void)
 {
@@ -273,6 +278,9 @@ int arch_add_memory(int nid, u64 start, u64 size,
 	unsigned long size_pages = PFN_DOWN(size);
 	int rc;
 
+	if (WARN_ON_ONCE(restrictions->altmap))
+		return -EINVAL;
+
 	rc = vmem_add_mapping(start, size);
 	if (rc)
 		return rc;
@@ -283,16 +291,15 @@ int arch_add_memory(int nid, u64 start, u64 size,
 	return rc;
 }
 
-#ifdef CONFIG_MEMORY_HOTREMOVE
 void arch_remove_memory(int nid, u64 start, u64 size,
 			struct vmem_altmap *altmap)
 {
-	/*
-	 * There is no hardware or firmware interface which could trigger a
-	 * hot memory remove on s390. So there is nothing that needs to be
-	 * implemented.
-	 */
-	BUG();
+	unsigned long start_pfn = start >> PAGE_SHIFT;
+	unsigned long nr_pages = size >> PAGE_SHIFT;
+	struct zone *zone;
+
+	zone = page_zone(pfn_to_page(start_pfn));
+	__remove_pages(zone, start_pfn, nr_pages, altmap);
+	vmem_remove_mapping(start, size);
 }
-#endif
 #endif /* CONFIG_MEMORY_HOTPLUG */