Merge tag 's390-5.18-1' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux

Pull s390 updates from Vasily Gorbik:

 - Raise minimum supported machine generation to z10, which comes with
   various cleanups and code simplifications (usercopy/spectre
   mitigation/etc).

 - Rework extables and get rid of anonymous out-of-line fixups.

 - Page table helpers cleanup. Add set_pXd()/set_pte() helper functions.
   Covert pte_val()/pXd_val() macros to functions.

 - Optimize kretprobe handling by avoiding extra kprobe on
   __kretprobe_trampoline.

 - Add support for CEX8 crypto cards.

 - Allow to trigger AP bus rescan via writing to /sys/bus/ap/scans.

 - Add CONFIG_EXPOLINE_EXTERN option to build the kernel without COMDAT
   group sections which simplifies kpatch support.

 - Always use the packed stack layout and extend kernel unwinder tests.

 - Add sanity checks for ftrace code patching.

 - Add s390dbf debug log for the vfio_ap device driver.

 - Various virtual vs physical address confusion fixes.

 - Various small fixes and improvements all over the code.

* tag 's390-5.18-1' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux: (69 commits)
  s390/test_unwind: add kretprobe tests
  s390/kprobes: Avoid additional kprobe in kretprobe handling
  s390: convert ".insn" encoding to instruction names
  s390: assume stckf is always present
  s390/nospec: move to single register thunks
  s390: raise minimum supported machine generation to z10
  s390/uaccess: Add copy_from/to_user_key functions
  s390/nospec: align and size extern thunks
  s390/nospec: add an option to use thunk-extern
  s390/nospec: generate single register thunks if possible
  s390/pci: make zpci_set_irq()/zpci_clear_irq() static
  s390: remove unused expoline to BC instructions
  s390/irq: use assignment instead of cast
  s390/traps: get rid of magic cast for per code
  s390/traps: get rid of magic cast for program interruption code
  s390/signal: fix typo in comments
  s390/asm-offsets: remove unused defines
  s390/test_unwind: avoid build warning with W=1
  s390: remove .fixup section
  s390/bpf: encode register within extable entry
  ...

1 files changed, 12 insertions, 12 deletions

diff --git a/arch/s390/mm/maccess.c b/arch/s390/mm/maccess.c
index 9663ce3625bc..421efa46946b 100644
--- a/arch/s390/mm/maccess.c
+++ b/arch/s390/mm/maccess.c
@@ -4,8 +4,6 @@
  *
  * Copyright IBM Corp. 2009, 2015
  *
- *   Author(s): Heiko Carstens <heiko.carstens@de.ibm.com>,
- *
  */
 
 #include <linux/uaccess.h>
@@ -14,6 +12,7 @@
 #include <linux/errno.h>
 #include <linux/gfp.h>
 #include <linux/cpu.h>
+#include <asm/asm-extable.h>
 #include <asm/ctl_reg.h>
 #include <asm/io.h>
 #include <asm/stacktrace.h>
@@ -123,7 +122,7 @@ static unsigned long __no_sanitize_address _memcpy_real(unsigned long dest,
 /*
  * Copy memory in real mode (kernel to kernel)
  */
-int memcpy_real(void *dest, void *src, size_t count)
+int memcpy_real(void *dest, unsigned long src, size_t count)
 {
 	unsigned long _dest  = (unsigned long)dest;
 	unsigned long _src   = (unsigned long)src;
@@ -175,7 +174,7 @@ void memcpy_absolute(void *dest, void *src, size_t count)
 /*
  * Copy memory from kernel (real) to user (virtual)
  */
-int copy_to_user_real(void __user *dest, void *src, unsigned long count)
+int copy_to_user_real(void __user *dest, unsigned long src, unsigned long count)
 {
 	int offs = 0, size, rc;
 	char *buf;
@@ -201,15 +200,15 @@ out:
 /*
  * Check if physical address is within prefix or zero page
  */
-static int is_swapped(unsigned long addr)
+static int is_swapped(phys_addr_t addr)
 {
-	unsigned long lc;
+	phys_addr_t lc;
 	int cpu;
 
 	if (addr < sizeof(struct lowcore))
 		return 1;
 	for_each_online_cpu(cpu) {
-		lc = (unsigned long) lowcore_ptr[cpu];
+		lc = virt_to_phys(lowcore_ptr[cpu]);
 		if (addr > lc + sizeof(struct lowcore) - 1 || addr < lc)
 			continue;
 		return 1;
@@ -225,7 +224,8 @@ static int is_swapped(unsigned long addr)
  */
 void *xlate_dev_mem_ptr(phys_addr_t addr)
 {
-	void *bounce = (void *) addr;
+	void *ptr = phys_to_virt(addr);
+	void *bounce = ptr;
 	unsigned long size;
 
 	cpus_read_lock();
@@ -234,7 +234,7 @@ void *xlate_dev_mem_ptr(phys_addr_t addr)
 		size = PAGE_SIZE - (addr & ~PAGE_MASK);
 		bounce = (void *) __get_free_page(GFP_ATOMIC);
 		if (bounce)
-			memcpy_absolute(bounce, (void *) addr, size);
+			memcpy_absolute(bounce, ptr, size);
 	}
 	preempt_enable();
 	cpus_read_unlock();
@@ -244,8 +244,8 @@ void *xlate_dev_mem_ptr(phys_addr_t addr)
 /*
  * Free converted buffer for /dev/mem access (if necessary)
  */
-void unxlate_dev_mem_ptr(phys_addr_t addr, void *buf)
+void unxlate_dev_mem_ptr(phys_addr_t addr, void *ptr)
 {
-	if ((void *) addr != buf)
-		free_page((unsigned long) buf);
+	if (addr != virt_to_phys(ptr))
+		free_page((unsigned long)ptr);
 }