Merge tag 'powerpc-6.1-1' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux

Pull powerpc updates from Michael Ellerman:

 - Remove our now never-true definitions for pgd_huge() and p4d_leaf().

 - Add pte_needs_flush() and huge_pmd_needs_flush() for 64-bit.

 - Add support for syscall wrappers.

 - Add support for KFENCE on 64-bit.

 - Update 64-bit HV KVM to use the new guest state entry/exit accounting
   API.

 - Support execute-only memory when using the Radix MMU (P9 or later).

 - Implement CONFIG_PARAVIRT_TIME_ACCOUNTING for pseries guests.

 - Updates to our linker script to move more data into read-only
   sections.

 - Allow the VDSO to be randomised on 32-bit.

 - Many other small features and fixes.

Thanks to Andrew Donnellan, Aneesh Kumar K.V, Arnd Bergmann, Athira
Rajeev, Christophe Leroy, David Hildenbrand, Disha Goel, Fabiano Rosas,
Gaosheng Cui, Gustavo A. R. Silva, Haren Myneni, Hari Bathini, Jilin
Yuan, Joel Stanley, Kajol Jain, Kees Cook, Krzysztof Kozlowski, Laurent
Dufour, Liang He, Li Huafei, Lukas Bulwahn, Madhavan Srinivasan, Nathan
Chancellor, Nathan Lynch, Nicholas Miehlbradt, Nicholas Piggin, Pali
Rohár, Rohan McLure, Russell Currey, Sachin Sant, Segher Boessenkool,
Shrikanth Hegde, Tyrel Datwyler, Wolfram Sang, ye xingchen, and Zheng
Yongjun.

* tag 'powerpc-6.1-1' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux: (214 commits)
  KVM: PPC: Book3S HV: Fix stack frame regs marker
  powerpc: Don't add __powerpc_ prefix to syscall entry points
  powerpc/64s/interrupt: Fix stack frame regs marker
  powerpc/64: Fix msr_check_and_set/clear MSR[EE] race
  powerpc/64s/interrupt: Change must-hard-mask interrupt check from BUG to WARN
  powerpc/pseries: Add firmware details to the hardware description
  powerpc/powernv: Add opal details to the hardware description
  powerpc: Add device-tree model to the hardware description
  powerpc/64: Add logical PVR to the hardware description
  powerpc: Add PVR & CPU name to hardware description
  powerpc: Add hardware description string
  powerpc/configs: Enable PPC_UV in powernv_defconfig
  powerpc/configs: Update config files for removed/renamed symbols
  powerpc/mm: Fix UBSAN warning reported on hugetlb
  powerpc/mm: Always update max/min_low_pfn in mem_topology_setup()
  powerpc/mm/book3s/hash: Rename flush_tlb_pmd_range
  powerpc: Drops STABS_DEBUG from linker scripts
  powerpc/64s: Remove lost/old comment
  powerpc/64s: Remove old STAB comment
  powerpc: remove orphan systbl_chk.sh
  ...

6 files changed, 260 insertions, 15 deletions

diff --git a/tools/perf/arch/powerpc/entry/syscalls/syscall.tbl b/tools/perf/arch/powerpc/entry/syscalls/syscall.tbl
index 2600b4237292..2bca64f96164 100644
--- a/tools/perf/arch/powerpc/entry/syscalls/syscall.tbl
+++ b/tools/perf/arch/powerpc/entry/syscalls/syscall.tbl
@@ -110,7 +110,7 @@
 79	common	settimeofday			sys_settimeofday		compat_sys_settimeofday
 80	common	getgroups			sys_getgroups
 81	common	setgroups			sys_setgroups
-82	32	select				ppc_select			sys_ni_syscall
+82	32	select				sys_old_select			compat_sys_old_select
 82	64	select				sys_ni_syscall
 82	spu	select				sys_ni_syscall
 83	common	symlink				sys_symlink
@@ -178,9 +178,9 @@
 133	common	fchdir				sys_fchdir
 134	common	bdflush				sys_ni_syscall
 135	common	sysfs				sys_sysfs
-136	32	personality			sys_personality			ppc64_personality
-136	64	personality			ppc64_personality
-136	spu	personality			ppc64_personality
+136	32	personality			sys_personality			compat_sys_ppc64_personality
+136	64	personality			sys_ppc64_personality
+136	spu	personality			sys_ppc64_personality
 137	common	afs_syscall			sys_ni_syscall
 138	common	setfsuid			sys_setfsuid
 139	common	setfsgid			sys_setfsgid
@@ -228,8 +228,8 @@
 176	64	rt_sigtimedwait			sys_rt_sigtimedwait
 177	nospu 	rt_sigqueueinfo			sys_rt_sigqueueinfo		compat_sys_rt_sigqueueinfo
 178	nospu 	rt_sigsuspend			sys_rt_sigsuspend		compat_sys_rt_sigsuspend
-179	common	pread64				sys_pread64			compat_sys_pread64
-180	common	pwrite64			sys_pwrite64			compat_sys_pwrite64
+179	common	pread64				sys_pread64			compat_sys_ppc_pread64
+180	common	pwrite64			sys_pwrite64			compat_sys_ppc_pwrite64
 181	common	chown				sys_chown
 182	common	getcwd				sys_getcwd
 183	common	capget				sys_capget
@@ -242,10 +242,10 @@
 188	common 	putpmsg				sys_ni_syscall
 189	nospu	vfork				sys_vfork
 190	common	ugetrlimit			sys_getrlimit			compat_sys_getrlimit
-191	common	readahead			sys_readahead			compat_sys_readahead
+191	common	readahead			sys_readahead			compat_sys_ppc_readahead
 192	32	mmap2				sys_mmap2			compat_sys_mmap2
-193	32	truncate64			sys_truncate64			compat_sys_truncate64
-194	32	ftruncate64			sys_ftruncate64			compat_sys_ftruncate64
+193	32	truncate64			sys_truncate64			compat_sys_ppc_truncate64
+194	32	ftruncate64			sys_ftruncate64			compat_sys_ppc_ftruncate64
 195	32	stat64				sys_stat64
 196	32	lstat64				sys_lstat64
 197	32	fstat64				sys_fstat64
@@ -288,7 +288,7 @@
 230	common	io_submit			sys_io_submit			compat_sys_io_submit
 231	common	io_cancel			sys_io_cancel
 232	nospu	set_tid_address			sys_set_tid_address
-233	common	fadvise64			sys_fadvise64			ppc32_fadvise64
+233	common	fadvise64			sys_fadvise64			compat_sys_ppc32_fadvise64
 234	nospu	exit_group			sys_exit_group
 235	nospu	lookup_dcookie			sys_lookup_dcookie		compat_sys_lookup_dcookie
 236	common	epoll_create			sys_epoll_create
@@ -323,7 +323,7 @@
 251	spu	utimes				sys_utimes
 252	common	statfs64			sys_statfs64			compat_sys_statfs64
 253	common	fstatfs64			sys_fstatfs64			compat_sys_fstatfs64
-254	32	fadvise64_64			ppc_fadvise64_64
+254	32	fadvise64_64			sys_ppc_fadvise64_64
 254	spu	fadvise64_64			sys_ni_syscall
 255	common	rtas				sys_rtas
 256	32	sys_debug_setcontext		sys_debug_setcontext		sys_ni_syscall
@@ -390,7 +390,7 @@
 305	common	signalfd			sys_signalfd			compat_sys_signalfd
 306	common	timerfd_create			sys_timerfd_create
 307	common	eventfd				sys_eventfd
-308	common	sync_file_range2		sys_sync_file_range2		compat_sys_sync_file_range2
+308	common	sync_file_range2		sys_sync_file_range2		compat_sys_ppc_sync_file_range2
 309	nospu	fallocate			sys_fallocate			compat_sys_fallocate
 310	nospu	subpage_prot			sys_subpage_prot
 311	32	timerfd_settime			sys_timerfd_settime32
diff --git a/tools/testing/selftests/powerpc/benchmarks/gettimeofday.c b/tools/testing/selftests/powerpc/benchmarks/gettimeofday.c
index 6b415683357b..580fcac0a09f 100644
--- a/tools/testing/selftests/powerpc/benchmarks/gettimeofday.c
+++ b/tools/testing/selftests/powerpc/benchmarks/gettimeofday.c
@@ -12,7 +12,7 @@ static int test_gettimeofday(void)
 {
 	int i;
 
-	struct timeval tv_start, tv_end;
+	struct timeval tv_start, tv_end, tv_diff;
 
 	gettimeofday(&tv_start, NULL);
 
@@ -20,7 +20,9 @@ static int test_gettimeofday(void)
 		gettimeofday(&tv_end, NULL);
 	}
 
-	printf("time = %.6f\n", tv_end.tv_sec - tv_start.tv_sec + (tv_end.tv_usec - tv_start.tv_usec) * 1e-6);
+	timersub(&tv_start, &tv_end, &tv_diff);
+
+	printf("time = %.6f\n", tv_diff.tv_sec + (tv_diff.tv_usec) * 1e-6);
 
 	return 0;
 }
diff --git a/tools/testing/selftests/powerpc/mm/Makefile b/tools/testing/selftests/powerpc/mm/Makefile
index 27dc09d0bfee..19dd0b2ea397 100644
--- a/tools/testing/selftests/powerpc/mm/Makefile
+++ b/tools/testing/selftests/powerpc/mm/Makefile
@@ -3,7 +3,7 @@ noarg:
 	$(MAKE) -C ../
 
 TEST_GEN_PROGS := hugetlb_vs_thp_test subpage_prot prot_sao segv_errors wild_bctr \
-		  large_vm_fork_separation bad_accesses pkey_exec_prot \
+		  large_vm_fork_separation bad_accesses exec_prot pkey_exec_prot \
 		  pkey_siginfo stack_expansion_signal stack_expansion_ldst \
 		  large_vm_gpr_corruption
 TEST_PROGS := stress_code_patching.sh
@@ -22,6 +22,7 @@ $(OUTPUT)/wild_bctr: CFLAGS += -m64
 $(OUTPUT)/large_vm_fork_separation: CFLAGS += -m64
 $(OUTPUT)/large_vm_gpr_corruption: CFLAGS += -m64
 $(OUTPUT)/bad_accesses: CFLAGS += -m64
+$(OUTPUT)/exec_prot: CFLAGS += -m64
 $(OUTPUT)/pkey_exec_prot: CFLAGS += -m64
 $(OUTPUT)/pkey_siginfo: CFLAGS += -m64
 
diff --git a/tools/testing/selftests/powerpc/mm/exec_prot.c b/tools/testing/selftests/powerpc/mm/exec_prot.c
new file mode 100644
index 000000000000..db75b2225de1
--- /dev/null
+++ b/tools/testing/selftests/powerpc/mm/exec_prot.c
@@ -0,0 +1,231 @@
+// SPDX-License-Identifier: GPL-2.0
+
+/*
+ * Copyright 2022, Nicholas Miehlbradt, IBM Corporation
+ * based on pkey_exec_prot.c
+ *
+ * Test if applying execute protection on pages works as expected.
+ */
+
+#define _GNU_SOURCE
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <signal.h>
+
+#include <unistd.h>
+#include <sys/mman.h>
+
+#include "pkeys.h"
+
+
+#define PPC_INST_NOP	0x60000000
+#define PPC_INST_TRAP	0x7fe00008
+#define PPC_INST_BLR	0x4e800020
+
+static volatile sig_atomic_t fault_code;
+static volatile sig_atomic_t remaining_faults;
+static volatile unsigned int *fault_addr;
+static unsigned long pgsize, numinsns;
+static unsigned int *insns;
+static bool pkeys_supported;
+
+static bool is_fault_expected(int fault_code)
+{
+	if (fault_code == SEGV_ACCERR)
+		return true;
+
+	/* Assume any pkey error is fine since pkey_exec_prot test covers them */
+	if (fault_code == SEGV_PKUERR && pkeys_supported)
+		return true;
+
+	return false;
+}
+
+static void trap_handler(int signum, siginfo_t *sinfo, void *ctx)
+{
+	/* Check if this fault originated from the expected address */
+	if (sinfo->si_addr != (void *)fault_addr)
+		sigsafe_err("got a fault for an unexpected address\n");
+
+	_exit(1);
+}
+
+static void segv_handler(int signum, siginfo_t *sinfo, void *ctx)
+{
+	fault_code = sinfo->si_code;
+
+	/* Check if this fault originated from the expected address */
+	if (sinfo->si_addr != (void *)fault_addr) {
+		sigsafe_err("got a fault for an unexpected address\n");
+		_exit(1);
+	}
+
+	/* Check if too many faults have occurred for a single test case */
+	if (!remaining_faults) {
+		sigsafe_err("got too many faults for the same address\n");
+		_exit(1);
+	}
+
+
+	/* Restore permissions in order to continue */
+	if (is_fault_expected(fault_code)) {
+		if (mprotect(insns, pgsize, PROT_READ | PROT_WRITE | PROT_EXEC)) {
+			sigsafe_err("failed to set access permissions\n");
+			_exit(1);
+		}
+	} else {
+		sigsafe_err("got a fault with an unexpected code\n");
+		_exit(1);
+	}
+
+	remaining_faults--;
+}
+
+static int check_exec_fault(int rights)
+{
+	/*
+	 * Jump to the executable region.
+	 *
+	 * The first iteration also checks if the overwrite of the
+	 * first instruction word from a trap to a no-op succeeded.
+	 */
+	fault_code = -1;
+	remaining_faults = 0;
+	if (!(rights & PROT_EXEC))
+		remaining_faults = 1;
+
+	FAIL_IF(mprotect(insns, pgsize, rights) != 0);
+	asm volatile("mtctr	%0; bctrl" : : "r"(insns));
+
+	FAIL_IF(remaining_faults != 0);
+	if (!(rights & PROT_EXEC))
+		FAIL_IF(!is_fault_expected(fault_code));
+
+	return 0;
+}
+
+static int test(void)
+{
+	struct sigaction segv_act, trap_act;
+	int i;
+
+	/* Skip the test if the CPU doesn't support Radix */
+	SKIP_IF(!have_hwcap2(PPC_FEATURE2_ARCH_3_00));
+
+	/* Check if pkeys are supported */
+	pkeys_supported = pkeys_unsupported() == 0;
+
+	/* Setup SIGSEGV handler */
+	segv_act.sa_handler = 0;
+	segv_act.sa_sigaction = segv_handler;
+	FAIL_IF(sigprocmask(SIG_SETMASK, 0, &segv_act.sa_mask) != 0);
+	segv_act.sa_flags = SA_SIGINFO;
+	segv_act.sa_restorer = 0;
+	FAIL_IF(sigaction(SIGSEGV, &segv_act, NULL) != 0);
+
+	/* Setup SIGTRAP handler */
+	trap_act.sa_handler = 0;
+	trap_act.sa_sigaction = trap_handler;
+	FAIL_IF(sigprocmask(SIG_SETMASK, 0, &trap_act.sa_mask) != 0);
+	trap_act.sa_flags = SA_SIGINFO;
+	trap_act.sa_restorer = 0;
+	FAIL_IF(sigaction(SIGTRAP, &trap_act, NULL) != 0);
+
+	/* Setup executable region */
+	pgsize = getpagesize();
+	numinsns = pgsize / sizeof(unsigned int);
+	insns = (unsigned int *)mmap(NULL, pgsize, PROT_READ | PROT_WRITE,
+				      MAP_PRIVATE | MAP_ANONYMOUS, -1, 0);
+	FAIL_IF(insns == MAP_FAILED);
+
+	/* Write the instruction words */
+	for (i = 1; i < numinsns - 1; i++)
+		insns[i] = PPC_INST_NOP;
+
+	/*
+	 * Set the first instruction as an unconditional trap. If
+	 * the last write to this address succeeds, this should
+	 * get overwritten by a no-op.
+	 */
+	insns[0] = PPC_INST_TRAP;
+
+	/*
+	 * Later, to jump to the executable region, we use a branch
+	 * and link instruction (bctrl) which sets the return address
+	 * automatically in LR. Use that to return back.
+	 */
+	insns[numinsns - 1] = PPC_INST_BLR;
+
+	/*
+	 * Pick the first instruction's address from the executable
+	 * region.
+	 */
+	fault_addr = insns;
+
+	/*
+	 * Read an instruction word from the address when the page
+	 * is execute only. This should generate an access fault.
+	 */
+	fault_code = -1;
+	remaining_faults = 1;
+	printf("Testing read on --x, should fault...");
+	FAIL_IF(mprotect(insns, pgsize, PROT_EXEC) != 0);
+	i = *fault_addr;
+	FAIL_IF(remaining_faults != 0 || !is_fault_expected(fault_code));
+	printf("ok!\n");
+
+	/*
+	 * Write an instruction word to the address when the page
+	 * execute only. This should also generate an access fault.
+	 */
+	fault_code = -1;
+	remaining_faults = 1;
+	printf("Testing write on --x, should fault...");
+	FAIL_IF(mprotect(insns, pgsize, PROT_EXEC) != 0);
+	*fault_addr = PPC_INST_NOP;
+	FAIL_IF(remaining_faults != 0 || !is_fault_expected(fault_code));
+	printf("ok!\n");
+
+	printf("Testing exec on ---, should fault...");
+	FAIL_IF(check_exec_fault(PROT_NONE));
+	printf("ok!\n");
+
+	printf("Testing exec on r--, should fault...");
+	FAIL_IF(check_exec_fault(PROT_READ));
+	printf("ok!\n");
+
+	printf("Testing exec on -w-, should fault...");
+	FAIL_IF(check_exec_fault(PROT_WRITE));
+	printf("ok!\n");
+
+	printf("Testing exec on rw-, should fault...");
+	FAIL_IF(check_exec_fault(PROT_READ | PROT_WRITE));
+	printf("ok!\n");
+
+	printf("Testing exec on --x, should succeed...");
+	FAIL_IF(check_exec_fault(PROT_EXEC));
+	printf("ok!\n");
+
+	printf("Testing exec on r-x, should succeed...");
+	FAIL_IF(check_exec_fault(PROT_READ | PROT_EXEC));
+	printf("ok!\n");
+
+	printf("Testing exec on -wx, should succeed...");
+	FAIL_IF(check_exec_fault(PROT_WRITE | PROT_EXEC));
+	printf("ok!\n");
+
+	printf("Testing exec on rwx, should succeed...");
+	FAIL_IF(check_exec_fault(PROT_READ | PROT_WRITE | PROT_EXEC));
+	printf("ok!\n");
+
+	/* Cleanup */
+	FAIL_IF(munmap((void *)insns, pgsize));
+
+	return 0;
+}
+
+int main(void)
+{
+	return test_harness(test, "exec_prot");
+}
diff --git a/tools/testing/selftests/powerpc/mm/large_vm_gpr_corruption.c b/tools/testing/selftests/powerpc/mm/large_vm_gpr_corruption.c
index 927bfae99ed9..7da515f1da72 100644
--- a/tools/testing/selftests/powerpc/mm/large_vm_gpr_corruption.c
+++ b/tools/testing/selftests/powerpc/mm/large_vm_gpr_corruption.c
@@ -112,6 +112,8 @@ static int test(void)
 	// This tests a hash MMU specific bug.
 	FAIL_IF(using_hash_mmu(&hash_mmu));
 	SKIP_IF(!hash_mmu);
+	// 4K kernels don't support 4PB address space
+	SKIP_IF(sysconf(_SC_PAGESIZE) < 65536);
 
 	page_size = sysconf(_SC_PAGESIZE);
 
diff --git a/tools/testing/selftests/powerpc/pmu/sampling_tests/bhrb_filter_map_test.c b/tools/testing/selftests/powerpc/pmu/sampling_tests/bhrb_filter_map_test.c
index 8182647c63c8..3f43c315c666 100644
--- a/tools/testing/selftests/powerpc/pmu/sampling_tests/bhrb_filter_map_test.c
+++ b/tools/testing/selftests/powerpc/pmu/sampling_tests/bhrb_filter_map_test.c
@@ -96,6 +96,15 @@ static int bhrb_filter_map_test(void)
 		}
 	}
 
+	/*
+	 * Combine filter maps which includes a valid branch filter and an invalid branch
+	 * filter. Example: any ( PERF_SAMPLE_BRANCH_ANY) and any_call
+	 * (PERF_SAMPLE_BRANCH_ANY_CALL).
+	 * The perf_event_open should fail in this case.
+	 */
+	event.attr.branch_sample_type = PERF_SAMPLE_BRANCH_ANY | PERF_SAMPLE_BRANCH_ANY_CALL;
+	FAIL_IF(!event_open(&event));
+
 	return 0;
 }