Merge tag 'parisc-for-6.11-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux

Pull parisc updates from Helge Deller:
 "The gettimeofday() and clock_gettime() syscalls are now available as
  vDSO functions, and Dave added a patch which allows to use NVMe cards
  in the PCI slots as fast and easy alternative to SCSI discs.

  Summary:

   - add gettimeofday() and clock_gettime() vDSO functions

   - enable PCI_MSI_ARCH_FALLBACKS to allow PCI to PCIe bridge adaptor
     with PCIe NVME card to function in parisc machines

   - allow users to reduce kernel unaligned runtime warnings

   - minor code cleanups"

* tag 'parisc-for-6.11-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux:
  parisc: Add support for CONFIG_SYSCTL_ARCH_UNALIGN_NO_WARN
  parisc: Use max() to calculate parisc_tlb_flush_threshold
  parisc: Fix warning at drivers/pci/msi/msi.h:121
  parisc: Add 64-bit gettimeofday() and clock_gettime() vDSO functions
  parisc: Add 32-bit gettimeofday() and clock_gettime() vDSO functions
  parisc: Clean up unistd.h file

8 files changed, 106 insertions, 12 deletions

diff --git a/arch/parisc/kernel/cache.c b/arch/parisc/kernel/cache.c
index 483bfafd930c..db531e58d70e 100644
--- a/arch/parisc/kernel/cache.c
+++ b/arch/parisc/kernel/cache.c
@@ -611,11 +611,7 @@ void __init parisc_setup_cache_timing(void)
 		threshold/1024);
 
 set_tlb_threshold:
-	if (threshold > FLUSH_TLB_THRESHOLD)
-		parisc_tlb_flush_threshold = threshold;
-	else
-		parisc_tlb_flush_threshold = FLUSH_TLB_THRESHOLD;
-
+	parisc_tlb_flush_threshold = max(threshold, FLUSH_TLB_THRESHOLD);
 	printk(KERN_INFO "TLB flush threshold set to %lu KiB\n",
 		parisc_tlb_flush_threshold/1024);
 }
diff --git a/arch/parisc/kernel/unaligned.c b/arch/parisc/kernel/unaligned.c
index 71e596ca5a86..3e79e40e361d 100644
--- a/arch/parisc/kernel/unaligned.c
+++ b/arch/parisc/kernel/unaligned.c
@@ -104,6 +104,7 @@
 #define ERR_NOTHANDLED	-1
 
 int unaligned_enabled __read_mostly = 1;
+int no_unaligned_warning __read_mostly;
 
 static int emulate_ldh(struct pt_regs *regs, int toreg)
 {
@@ -399,6 +400,7 @@ void handle_unaligned(struct pt_regs *regs)
 	} else {
 		static DEFINE_RATELIMIT_STATE(kernel_ratelimit, 5 * HZ, 5);
 		if (!(current->thread.flags & PARISC_UAC_NOPRINT) &&
+			!no_unaligned_warning &&
 			__ratelimit(&kernel_ratelimit))
 			pr_warn("Kernel: unaligned access to " RFMT " in %pS "
 					"(iir " RFMT ")\n",
diff --git a/arch/parisc/kernel/vdso32/Makefile b/arch/parisc/kernel/vdso32/Makefile
index 1350d50c6306..2b36d25ada6e 100644
--- a/arch/parisc/kernel/vdso32/Makefile
+++ b/arch/parisc/kernel/vdso32/Makefile
@@ -1,11 +1,25 @@
-# List of files in the vdso, has to be asm only for now
+# Include the generic Makefile to check the built vdso.
+include $(srctree)/lib/vdso/Makefile
+
+KCOV_INSTRUMENT := n
+
+# Disable gcov profiling, ubsan and kasan for VDSO code
+GCOV_PROFILE := n
+UBSAN_SANITIZE := n
+KASAN_SANITIZE := n
+KCSAN_SANITIZE := n
 
 obj-vdso32 = note.o sigtramp.o restart_syscall.o
+obj-cvdso32 = vdso32_generic.o
 
 # Build rules
 
-targets := $(obj-vdso32) vdso32.so
+targets := $(obj-vdso32) $(obj-cvdso32) vdso32.so
 obj-vdso32 := $(addprefix $(obj)/, $(obj-vdso32))
+obj-cvdso32 := $(addprefix $(obj)/, $(obj-cvdso32))
+
+VDSO_CFLAGS_REMOVE := -pg $(CC_FLAGS_FTRACE)
+CFLAGS_REMOVE_vdso32_generic.o = $(VDSO_CFLAGS_REMOVE)
 
 ccflags-y := -shared -fno-common -fbuiltin -mno-fast-indirect-calls -O2 -mno-long-calls
 #  -march=1.1 -mschedule=7100LC
@@ -26,18 +40,22 @@ $(obj)/vdso32_wrapper.o : $(obj)/vdso32.so FORCE
 
 # Force dependency (incbin is bad)
 # link rule for the .so file, .lds has to be first
-$(obj)/vdso32.so: $(obj)/vdso32.lds $(obj-vdso32) $(VDSO_LIBGCC) FORCE
+$(obj)/vdso32.so: $(obj)/vdso32.lds $(obj-vdso32) $(obj-cvdso32) $(VDSO_LIBGCC) FORCE
 	$(call if_changed,vdso32ld)
 
 # assembly rules for the .S files
 $(obj-vdso32): %.o: %.S FORCE
 	$(call if_changed_dep,vdso32as)
+$(obj-cvdso32): %.o: %.c FORCE
+	$(call if_changed_dep,vdso32cc)
 
 # actual build commands
 quiet_cmd_vdso32ld = VDSO32L $@
       cmd_vdso32ld = $(CROSS32CC) $(c_flags) -Wl,-T $(filter-out FORCE, $^) -o $@
 quiet_cmd_vdso32as = VDSO32A $@
       cmd_vdso32as = $(CROSS32CC) $(a_flags) -c -o $@ $<
+quiet_cmd_vdso32cc = VDSO32C $@
+      cmd_vdso32cc = $(CROSS32CC) $(c_flags) -c -o $@ $<
 
 # Generate VDSO offsets using helper script
 gen-vdsosym := $(src)/gen_vdso_offsets.sh
diff --git a/arch/parisc/kernel/vdso32/vdso32.lds.S b/arch/parisc/kernel/vdso32/vdso32.lds.S
index d4aff3af5262..4273baa26b65 100644
--- a/arch/parisc/kernel/vdso32/vdso32.lds.S
+++ b/arch/parisc/kernel/vdso32/vdso32.lds.S
@@ -106,6 +106,9 @@ VERSION
     global:
 	__kernel_sigtramp_rt32;
 	__kernel_restart_syscall32;
+	__vdso_gettimeofday;
+	__vdso_clock_gettime;
+	__vdso_clock_gettime64;
     local: *;
   };
 }
diff --git a/arch/parisc/kernel/vdso32/vdso32_generic.c b/arch/parisc/kernel/vdso32/vdso32_generic.c
new file mode 100644
index 000000000000..8d5bd59e8646
--- /dev/null
+++ b/arch/parisc/kernel/vdso32/vdso32_generic.c
@@ -0,0 +1,32 @@
+// SPDX-License-Identifier: GPL-2.0
+
+#include "asm/unistd.h"
+#include <linux/types.h>
+#include <uapi/asm/unistd_32.h>
+
+struct timezone;
+struct old_timespec32;
+struct __kernel_timespec;
+struct __kernel_old_timeval;
+
+/* forward declarations */
+int __vdso_gettimeofday(struct __kernel_old_timeval *tv, struct timezone *tz);
+int __vdso_clock_gettime(clockid_t clock, struct old_timespec32 *ts);
+int __vdso_clock_gettime64(clockid_t clock, struct __kernel_timespec *ts);
+
+
+int __vdso_gettimeofday(struct __kernel_old_timeval *tv,
+			struct timezone *tz)
+{
+	return syscall2(__NR_gettimeofday, (long)tv, (long)tz);
+}
+
+int __vdso_clock_gettime(clockid_t clock, struct old_timespec32 *ts)
+{
+	return syscall2(__NR_clock_gettime, (long)clock, (long)ts);
+}
+
+int __vdso_clock_gettime64(clockid_t clock, struct __kernel_timespec *ts)
+{
+	return syscall2(__NR_clock_gettime64, (long)clock, (long)ts);
+}
diff --git a/arch/parisc/kernel/vdso64/Makefile b/arch/parisc/kernel/vdso64/Makefile
index 0b1c1cc4c2c7..bd87bd6a6659 100644
--- a/arch/parisc/kernel/vdso64/Makefile
+++ b/arch/parisc/kernel/vdso64/Makefile
@@ -1,12 +1,25 @@
-# List of files in the vdso, has to be asm only for now
+# Include the generic Makefile to check the built vdso.
+include $(srctree)/lib/vdso/Makefile
+
+KCOV_INSTRUMENT := n
+
+# Disable gcov profiling, ubsan and kasan for VDSO code
+GCOV_PROFILE := n
+UBSAN_SANITIZE := n
+KASAN_SANITIZE := n
+KCSAN_SANITIZE := n
 
 obj-vdso64 = note.o sigtramp.o restart_syscall.o
+obj-cvdso64 = vdso64_generic.o
 
 # Build rules
 
-targets := $(obj-vdso64) vdso64.so
-obj-vdso64 := $(addprefix $(obj)/, $(obj-vdso64))
+targets := $(obj-vdso64) $(obj-cvdso64) vdso64.so
+obj-vdso64  := $(addprefix $(obj)/, $(obj-vdso64))
+obj-cvdso64 := $(addprefix $(obj)/, $(obj-cvdso64))
 
+VDSO_CFLAGS_REMOVE := -pg $(CC_FLAGS_FTRACE)
+CFLAGS_REMOVE_vdso64_generic.o = $(VDSO_CFLAGS_REMOVE)
 
 ccflags-y := -shared -fno-common -fno-builtin
 ccflags-y += -nostdlib -Wl,-soname=linux-vdso64.so.1 \
@@ -26,18 +39,22 @@ $(obj)/vdso64_wrapper.o : $(obj)/vdso64.so FORCE
 
 # Force dependency (incbin is bad)
 # link rule for the .so file, .lds has to be first
-$(obj)/vdso64.so: $(obj)/vdso64.lds $(obj-vdso64) $(VDSO_LIBGCC) FORCE
+$(obj)/vdso64.so: $(obj)/vdso64.lds $(obj-vdso64) $(obj-cvdso64) $(VDSO_LIBGCC) FORCE
 	$(call if_changed,vdso64ld)
 
 # assembly rules for the .S files
 $(obj-vdso64): %.o: %.S FORCE
 	$(call if_changed_dep,vdso64as)
+$(obj-cvdso64): %.o: %.c FORCE
+	$(call if_changed_dep,vdso64cc)
 
 # actual build commands
 quiet_cmd_vdso64ld = VDSO64L $@
       cmd_vdso64ld = $(CC) $(c_flags) -Wl,-T $(filter-out FORCE, $^) -o $@
 quiet_cmd_vdso64as = VDSO64A $@
       cmd_vdso64as = $(CC) $(a_flags) -c -o $@ $<
+quiet_cmd_vdso64cc = VDSO64C $@
+      cmd_vdso64cc = $(CC) $(c_flags) -c -o $@ $<
 
 # Generate VDSO offsets using helper script
 gen-vdsosym := $(src)/gen_vdso_offsets.sh
diff --git a/arch/parisc/kernel/vdso64/vdso64.lds.S b/arch/parisc/kernel/vdso64/vdso64.lds.S
index de1fb4b19286..10f25e4e1554 100644
--- a/arch/parisc/kernel/vdso64/vdso64.lds.S
+++ b/arch/parisc/kernel/vdso64/vdso64.lds.S
@@ -104,6 +104,8 @@ VERSION
     global:
 	__kernel_sigtramp_rt64;
 	__kernel_restart_syscall64;
+	__vdso_gettimeofday;
+	__vdso_clock_gettime;
     local: *;
   };
 }
diff --git a/arch/parisc/kernel/vdso64/vdso64_generic.c b/arch/parisc/kernel/vdso64/vdso64_generic.c
new file mode 100644
index 000000000000..fc6836a0075b
--- /dev/null
+++ b/arch/parisc/kernel/vdso64/vdso64_generic.c
@@ -0,0 +1,24 @@
+// SPDX-License-Identifier: GPL-2.0
+
+#include "asm/unistd.h"
+#include <linux/types.h>
+
+struct timezone;
+struct __kernel_timespec;
+struct __kernel_old_timeval;
+
+/* forward declarations */
+int __vdso_gettimeofday(struct __kernel_old_timeval *tv, struct timezone *tz);
+int __vdso_clock_gettime(clockid_t clock, struct __kernel_timespec *ts);
+
+
+int __vdso_gettimeofday(struct __kernel_old_timeval *tv,
+			struct timezone *tz)
+{
+	return syscall2(__NR_gettimeofday, (long)tv, (long)tz);
+}
+
+int __vdso_clock_gettime(clockid_t clock, struct __kernel_timespec *ts)
+{
+	return syscall2(__NR_clock_gettime, (long)clock, (long)ts);
+}