Merge branch 'akpm' (patches from Andrew)

Merge misc fixes from Andrew Morton:
 "15 patches.

  Subsystems affected by this patch series: ipc, hexagon, mm (swap,
  slab-generic, kmemleak, hugetlb, kasan, damon, and highmem), and proc"

* emailed patches from Andrew Morton <akpm@linux-foundation.org>:
  proc/vmcore: fix clearing user buffer by properly using clear_user()
  kmap_local: don't assume kmap PTEs are linear arrays in memory
  mm/damon/dbgfs: fix missed use of damon_dbgfs_lock
  mm/damon/dbgfs: use '__GFP_NOWARN' for user-specified size buffer allocation
  kasan: test: silence intentional read overflow warnings
  hugetlb, userfaultfd: fix reservation restore on userfaultfd error
  hugetlb: fix hugetlb cgroup refcounting during mremap
  mm: kmemleak: slob: respect SLAB_NOLEAKTRACE flag
  hexagon: ignore vmlinux.lds
  hexagon: clean up timer-regs.h
  hexagon: export raw I/O routines for modules
  mm: emit the "free" trace report before freeing memory in kmem_cache_free()
  shm: extend forced shm destroy to support objects from several IPC nses
  ipc: WARN if trying to remove ipc object which is absent
  mm/swap.c:put_pages_list(): reinitialise the page list

6 files changed, 17 insertions, 30 deletions

diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
index f0f9e8bec83a..c2724d986fa0 100644
--- a/arch/arm/Kconfig
+++ b/arch/arm/Kconfig
@@ -1463,6 +1463,7 @@ config HIGHMEM
 	bool "High Memory Support"
 	depends on MMU
 	select KMAP_LOCAL
+	select KMAP_LOCAL_NON_LINEAR_PTE_ARRAY
 	help
 	  The address space of ARM processors is only 4 Gigabytes large
 	  and it has to accommodate user address space, kernel address
diff --git a/arch/hexagon/include/asm/timer-regs.h b/arch/hexagon/include/asm/timer-regs.h
deleted file mode 100644
index ee6c61423a05..000000000000
--- a/arch/hexagon/include/asm/timer-regs.h
+++ /dev/null
@@ -1,26 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0-only */
-/*
- * Timer support for Hexagon
- *
- * Copyright (c) 2010-2011, The Linux Foundation. All rights reserved.
- */
-
-#ifndef _ASM_TIMER_REGS_H
-#define _ASM_TIMER_REGS_H
-
-/*  This stuff should go into a platform specific file  */
-#define TCX0_CLK_RATE		19200
-#define TIMER_ENABLE		0
-#define TIMER_CLR_ON_MATCH	1
-
-/*
- * 8x50 HDD Specs 5-8.  Simulator co-sim not fixed until
- * release 1.1, and then it's "adjustable" and probably not defaulted.
- */
-#define RTOS_TIMER_INT		3
-#ifdef CONFIG_HEXAGON_COMET
-#define RTOS_TIMER_REGS_ADDR	0xAB000000UL
-#endif
-#define SLEEP_CLK_RATE		32000
-
-#endif
diff --git a/arch/hexagon/include/asm/timex.h b/arch/hexagon/include/asm/timex.h
index 8d4ec76fceb4..dfe69e118b2b 100644
--- a/arch/hexagon/include/asm/timex.h
+++ b/arch/hexagon/include/asm/timex.h
@@ -7,11 +7,10 @@
 #define _ASM_TIMEX_H
 
 #include <asm-generic/timex.h>
-#include <asm/timer-regs.h>
 #include <asm/hexagon_vm.h>
 
 /* Using TCX0 as our clock.  CLOCK_TICK_RATE scheduled to be removed. */
-#define CLOCK_TICK_RATE              TCX0_CLK_RATE
+#define CLOCK_TICK_RATE              19200
 
 #define ARCH_HAS_READ_CURRENT_TIMER
 
diff --git a/arch/hexagon/kernel/.gitignore b/arch/hexagon/kernel/.gitignore
new file mode 100644
index 000000000000..c5f676c3c224
--- /dev/null
+++ b/arch/hexagon/kernel/.gitignore
@@ -0,0 +1 @@
+vmlinux.lds
diff --git a/arch/hexagon/kernel/time.c b/arch/hexagon/kernel/time.c
index feffe527ac92..febc95714d75 100644
--- a/arch/hexagon/kernel/time.c
+++ b/arch/hexagon/kernel/time.c
@@ -17,9 +17,10 @@
 #include <linux/of_irq.h>
 #include <linux/module.h>
 
-#include <asm/timer-regs.h>
 #include <asm/hexagon_vm.h>
 
+#define TIMER_ENABLE		BIT(0)
+
 /*
  * For the clocksource we need:
  *	pcycle frequency (600MHz)
@@ -33,6 +34,13 @@ cycles_t	pcycle_freq_mhz;
 cycles_t	thread_freq_mhz;
 cycles_t	sleep_clk_freq;
 
+/*
+ * 8x50 HDD Specs 5-8.  Simulator co-sim not fixed until
+ * release 1.1, and then it's "adjustable" and probably not defaulted.
+ */
+#define RTOS_TIMER_INT		3
+#define RTOS_TIMER_REGS_ADDR	0xAB000000UL
+
 static struct resource rtos_timer_resources[] = {
 	{
 		.start	= RTOS_TIMER_REGS_ADDR,
@@ -80,7 +88,7 @@ static int set_next_event(unsigned long delta, struct clock_event_device *evt)
 	iowrite32(0, &rtos_timer->clear);
 
 	iowrite32(delta, &rtos_timer->match);
-	iowrite32(1 << TIMER_ENABLE, &rtos_timer->enable);
+	iowrite32(TIMER_ENABLE, &rtos_timer->enable);
 	return 0;
 }
 
diff --git a/arch/hexagon/lib/io.c b/arch/hexagon/lib/io.c
index d35d69d6588c..55f75392857b 100644
--- a/arch/hexagon/lib/io.c
+++ b/arch/hexagon/lib/io.c
@@ -27,6 +27,7 @@ void __raw_readsw(const void __iomem *addr, void *data, int len)
 		*dst++ = *src;
 
 }
+EXPORT_SYMBOL(__raw_readsw);
 
 /*
  * __raw_writesw - read words a short at a time
@@ -47,6 +48,7 @@ void __raw_writesw(void __iomem *addr, const void *data, int len)
 
 
 }
+EXPORT_SYMBOL(__raw_writesw);
 
 /*  Pretty sure len is pre-adjusted for the length of the access already */
 void __raw_readsl(const void __iomem *addr, void *data, int len)
@@ -62,6 +64,7 @@ void __raw_readsl(const void __iomem *addr, void *data, int len)
 
 
 }
+EXPORT_SYMBOL(__raw_readsl);
 
 void __raw_writesl(void __iomem *addr, const void *data, int len)
 {
@@ -76,3 +79,4 @@ void __raw_writesl(void __iomem *addr, const void *data, int len)
 
 
 }
+EXPORT_SYMBOL(__raw_writesl);