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authorLinus Torvalds <torvalds@linux-foundation.org>2018-12-27 10:43:24 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2018-12-27 10:43:24 -0800
commit8d6973327ee84c2f40dd9efd8928d4a1186c96e2 (patch)
tree1c6accd71b6e9c4e05d5aaae766b958ad440d320 /tools
parent6d101ba6be2a26a3e1f513b5e293f0fd2b79ec5c (diff)
parent12526b0d6c580df860b31e59d68e5696e16c6e5b (diff)
downloadlinux-8d6973327ee84c2f40dd9efd8928d4a1186c96e2.tar.bz2
Merge tag 'powerpc-4.21-1' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux
Pull powerpc updates from Michael Ellerman: "Notable changes: - Mitigations for Spectre v2 on some Freescale (NXP) CPUs. - A large series adding support for pass-through of Nvidia V100 GPUs to guests on Power9. - Another large series to enable hardware assistance for TLB table walk on MPC8xx CPUs. - Some preparatory changes to our DMA code, to make way for further cleanups from Christoph. - Several fixes for our Transactional Memory handling discovered by fuzzing the signal return path. - Support for generating our system call table(s) from a text file like other architectures. - A fix to our page fault handler so that instead of generating a WARN_ON_ONCE, user accesses of kernel addresses instead print a ratelimited and appropriately scary warning. - A cosmetic change to make our unhandled page fault messages more similar to other arches and also more compact and informative. - Freescale updates from Scott: "Highlights include elimination of legacy clock bindings use from dts files, an 83xx watchdog handler, fixes to old dts interrupt errors, and some minor cleanup." And many clean-ups, reworks and minor fixes etc. Thanks to: Alexandre Belloni, Alexey Kardashevskiy, Andrew Donnellan, Aneesh Kumar K.V, Arnd Bergmann, Benjamin Herrenschmidt, Breno Leitao, Christian Lamparter, Christophe Leroy, Christoph Hellwig, Daniel Axtens, Darren Stevens, David Gibson, Diana Craciun, Dmitry V. Levin, Firoz Khan, Geert Uytterhoeven, Greg Kurz, Gustavo Romero, Hari Bathini, Joel Stanley, Kees Cook, Madhavan Srinivasan, Mahesh Salgaonkar, Markus Elfring, Mathieu Malaterre, Michal Suchánek, Naveen N. Rao, Nick Desaulniers, Oliver O'Halloran, Paul Mackerras, Ram Pai, Ravi Bangoria, Rob Herring, Russell Currey, Sabyasachi Gupta, Sam Bobroff, Satheesh Rajendran, Scott Wood, Segher Boessenkool, Stephen Rothwell, Tang Yuantian, Thiago Jung Bauermann, Yangtao Li, Yuantian Tang, Yue Haibing" * tag 'powerpc-4.21-1' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux: (201 commits) Revert "powerpc/fsl_pci: simplify fsl_pci_dma_set_mask" powerpc/zImage: Also check for stdout-path powerpc: Fix HMIs on big-endian with CONFIG_RELOCATABLE=y macintosh: Use of_node_name_{eq, prefix} for node name comparisons ide: Use of_node_name_eq for node name comparisons powerpc: Use of_node_name_eq for node name comparisons powerpc/pseries/pmem: Convert to %pOFn instead of device_node.name powerpc/mm: Remove very old comment in hash-4k.h powerpc/pseries: Fix node leak in update_lmb_associativity_index() powerpc/configs/85xx: Enable CONFIG_DEBUG_KERNEL powerpc/dts/fsl: Fix dtc-flagged interrupt errors clk: qoriq: add more compatibles strings powerpc/fsl: Use new clockgen binding powerpc/83xx: handle machine check caused by watchdog timer powerpc/fsl-rio: fix spelling mistake "reserverd" -> "reserved" powerpc/fsl_pci: simplify fsl_pci_dma_set_mask arch/powerpc/fsl_rmu: Use dma_zalloc_coherent vfio_pci: Add NVIDIA GV100GL [Tesla V100 SXM2] subdriver vfio_pci: Allow regions to add own capabilities vfio_pci: Allow mapping extra regions ...
Diffstat (limited to 'tools')
-rw-r--r--tools/arch/powerpc/include/uapi/asm/perf_regs.h1
-rw-r--r--tools/perf/arch/powerpc/include/perf_regs.h3
-rw-r--r--tools/perf/arch/powerpc/util/perf_regs.c1
-rw-r--r--tools/testing/selftests/powerpc/include/utils.h10
-rw-r--r--tools/testing/selftests/powerpc/ptrace/core-pkey.c5
-rw-r--r--tools/testing/selftests/powerpc/ptrace/ptrace-gpr.c2
-rw-r--r--tools/testing/selftests/powerpc/ptrace/ptrace-tm-gpr.c4
-rw-r--r--tools/testing/selftests/powerpc/ptrace/ptrace-tm-spd-tar.c2
-rw-r--r--tools/testing/selftests/powerpc/ptrace/ptrace-tm-spd-vsx.c3
-rw-r--r--tools/testing/selftests/powerpc/ptrace/ptrace-tm-spr.c2
-rw-r--r--tools/testing/selftests/powerpc/ptrace/ptrace-tm-tar.c2
-rw-r--r--tools/testing/selftests/powerpc/ptrace/ptrace-tm-vsx.c3
-rw-r--r--tools/testing/selftests/powerpc/tm/.gitignore1
-rw-r--r--tools/testing/selftests/powerpc/tm/Makefile2
-rw-r--r--tools/testing/selftests/powerpc/tm/tm-signal-sigreturn-nt.c46
15 files changed, 71 insertions, 16 deletions
diff --git a/tools/arch/powerpc/include/uapi/asm/perf_regs.h b/tools/arch/powerpc/include/uapi/asm/perf_regs.h
index 9e52c86ccbd3..ff91192407d1 100644
--- a/tools/arch/powerpc/include/uapi/asm/perf_regs.h
+++ b/tools/arch/powerpc/include/uapi/asm/perf_regs.h
@@ -46,6 +46,7 @@ enum perf_event_powerpc_regs {
PERF_REG_POWERPC_TRAP,
PERF_REG_POWERPC_DAR,
PERF_REG_POWERPC_DSISR,
+ PERF_REG_POWERPC_SIER,
PERF_REG_POWERPC_MAX,
};
#endif /* _UAPI_ASM_POWERPC_PERF_REGS_H */
diff --git a/tools/perf/arch/powerpc/include/perf_regs.h b/tools/perf/arch/powerpc/include/perf_regs.h
index 00e37b106913..1076393e6f43 100644
--- a/tools/perf/arch/powerpc/include/perf_regs.h
+++ b/tools/perf/arch/powerpc/include/perf_regs.h
@@ -62,7 +62,8 @@ static const char *reg_names[] = {
[PERF_REG_POWERPC_SOFTE] = "softe",
[PERF_REG_POWERPC_TRAP] = "trap",
[PERF_REG_POWERPC_DAR] = "dar",
- [PERF_REG_POWERPC_DSISR] = "dsisr"
+ [PERF_REG_POWERPC_DSISR] = "dsisr",
+ [PERF_REG_POWERPC_SIER] = "sier"
};
static inline const char *perf_reg_name(int id)
diff --git a/tools/perf/arch/powerpc/util/perf_regs.c b/tools/perf/arch/powerpc/util/perf_regs.c
index ec50939b0418..07fcd977d93e 100644
--- a/tools/perf/arch/powerpc/util/perf_regs.c
+++ b/tools/perf/arch/powerpc/util/perf_regs.c
@@ -52,6 +52,7 @@ const struct sample_reg sample_reg_masks[] = {
SMPL_REG(trap, PERF_REG_POWERPC_TRAP),
SMPL_REG(dar, PERF_REG_POWERPC_DAR),
SMPL_REG(dsisr, PERF_REG_POWERPC_DSISR),
+ SMPL_REG(sier, PERF_REG_POWERPC_SIER),
SMPL_REG_END
};
diff --git a/tools/testing/selftests/powerpc/include/utils.h b/tools/testing/selftests/powerpc/include/utils.h
index 49621822d7c3..ae43a614835d 100644
--- a/tools/testing/selftests/powerpc/include/utils.h
+++ b/tools/testing/selftests/powerpc/include/utils.h
@@ -82,6 +82,16 @@ do { \
} \
} while (0)
+#define SKIP_IF_MSG(x, msg) \
+do { \
+ if ((x)) { \
+ fprintf(stderr, \
+ "[SKIP] Test skipped on line %d: %s\n", \
+ __LINE__, msg); \
+ return MAGIC_SKIP_RETURN_VALUE; \
+ } \
+} while (0)
+
#define _str(s) #s
#define str(s) _str(s)
diff --git a/tools/testing/selftests/powerpc/ptrace/core-pkey.c b/tools/testing/selftests/powerpc/ptrace/core-pkey.c
index e23e2e199eb4..d5c64fee032d 100644
--- a/tools/testing/selftests/powerpc/ptrace/core-pkey.c
+++ b/tools/testing/selftests/powerpc/ptrace/core-pkey.c
@@ -352,10 +352,7 @@ static int write_core_pattern(const char *core_pattern)
FILE *f;
f = fopen(core_pattern_file, "w");
- if (!f) {
- perror("Error writing to core_pattern file");
- return TEST_FAIL;
- }
+ SKIP_IF_MSG(!f, "Try with root privileges");
ret = fwrite(core_pattern, 1, len, f);
fclose(f);
diff --git a/tools/testing/selftests/powerpc/ptrace/ptrace-gpr.c b/tools/testing/selftests/powerpc/ptrace/ptrace-gpr.c
index 0b4ebcc2f485..ca29fafeed5d 100644
--- a/tools/testing/selftests/powerpc/ptrace/ptrace-gpr.c
+++ b/tools/testing/selftests/powerpc/ptrace/ptrace-gpr.c
@@ -31,7 +31,7 @@ void gpr(void)
ASM_LOAD_GPR_IMMED(gpr_1)
ASM_LOAD_FPR_SINGLE_PRECISION(flt_1)
:
- : [gpr_1]"i"(GPR_1), [flt_1] "r" (&a)
+ : [gpr_1]"i"(GPR_1), [flt_1] "b" (&a)
: "memory", "r6", "r7", "r8", "r9", "r10",
"r11", "r12", "r13", "r14", "r15", "r16", "r17",
"r18", "r19", "r20", "r21", "r22", "r23", "r24",
diff --git a/tools/testing/selftests/powerpc/ptrace/ptrace-tm-gpr.c b/tools/testing/selftests/powerpc/ptrace/ptrace-tm-gpr.c
index 59206b96e98a..a08a91594dbe 100644
--- a/tools/testing/selftests/powerpc/ptrace/ptrace-tm-gpr.c
+++ b/tools/testing/selftests/powerpc/ptrace/ptrace-tm-gpr.c
@@ -59,8 +59,8 @@ trans:
"3: ;"
: [res] "=r" (result), [texasr] "=r" (texasr)
: [gpr_1]"i"(GPR_1), [gpr_2]"i"(GPR_2),
- [sprn_texasr] "i" (SPRN_TEXASR), [flt_1] "r" (&a),
- [flt_2] "r" (&b), [cptr1] "r" (&cptr[1])
+ [sprn_texasr] "i" (SPRN_TEXASR), [flt_1] "b" (&a),
+ [flt_2] "b" (&b), [cptr1] "b" (&cptr[1])
: "memory", "r7", "r8", "r9", "r10",
"r11", "r12", "r13", "r14", "r15", "r16",
"r17", "r18", "r19", "r20", "r21", "r22",
diff --git a/tools/testing/selftests/powerpc/ptrace/ptrace-tm-spd-tar.c b/tools/testing/selftests/powerpc/ptrace/ptrace-tm-spd-tar.c
index b3c061dc9512..f47174746231 100644
--- a/tools/testing/selftests/powerpc/ptrace/ptrace-tm-spd-tar.c
+++ b/tools/testing/selftests/powerpc/ptrace/ptrace-tm-spd-tar.c
@@ -72,7 +72,7 @@ trans:
"3: ;"
: [res] "=r" (result), [texasr] "=r" (texasr)
- : [val] "r" (cptr[1]), [sprn_dscr]"i"(SPRN_DSCR),
+ : [sprn_dscr]"i"(SPRN_DSCR),
[sprn_tar]"i"(SPRN_TAR), [sprn_ppr]"i"(SPRN_PPR),
[sprn_texasr]"i"(SPRN_TEXASR), [tar_1]"i"(TAR_1),
[dscr_1]"i"(DSCR_1), [tar_2]"i"(TAR_2), [dscr_2]"i"(DSCR_2),
diff --git a/tools/testing/selftests/powerpc/ptrace/ptrace-tm-spd-vsx.c b/tools/testing/selftests/powerpc/ptrace/ptrace-tm-spd-vsx.c
index 277dade1b382..18a685bf6a09 100644
--- a/tools/testing/selftests/powerpc/ptrace/ptrace-tm-spd-vsx.c
+++ b/tools/testing/selftests/powerpc/ptrace/ptrace-tm-spd-vsx.c
@@ -77,8 +77,7 @@ trans:
"3: ;"
: [res] "=r" (result), [texasr] "=r" (texasr)
- : [fp_load] "r" (fp_load), [fp_load_ckpt] "r" (fp_load_ckpt),
- [sprn_texasr] "i" (SPRN_TEXASR)
+ : [sprn_texasr] "i" (SPRN_TEXASR)
: "memory", "r0", "r1", "r3", "r4",
"r7", "r8", "r9", "r10", "r11"
);
diff --git a/tools/testing/selftests/powerpc/ptrace/ptrace-tm-spr.c b/tools/testing/selftests/powerpc/ptrace/ptrace-tm-spr.c
index 51427a2465f6..ba04999254e3 100644
--- a/tools/testing/selftests/powerpc/ptrace/ptrace-tm-spr.c
+++ b/tools/testing/selftests/powerpc/ptrace/ptrace-tm-spr.c
@@ -74,7 +74,7 @@ trans:
"3: ;"
: [tfhar] "=r" (tfhar), [res] "=r" (result),
- [texasr] "=r" (texasr), [cptr1] "=r" (cptr1)
+ [texasr] "=r" (texasr), [cptr1] "=b" (cptr1)
: [sprn_texasr] "i" (SPRN_TEXASR)
: "memory", "r0", "r8", "r31"
);
diff --git a/tools/testing/selftests/powerpc/ptrace/ptrace-tm-tar.c b/tools/testing/selftests/powerpc/ptrace/ptrace-tm-tar.c
index 48b462f75023..f70023b25e6e 100644
--- a/tools/testing/selftests/powerpc/ptrace/ptrace-tm-tar.c
+++ b/tools/testing/selftests/powerpc/ptrace/ptrace-tm-tar.c
@@ -65,7 +65,7 @@ trans:
: [sprn_dscr]"i"(SPRN_DSCR), [sprn_tar]"i"(SPRN_TAR),
[sprn_ppr]"i"(SPRN_PPR), [sprn_texasr]"i"(SPRN_TEXASR),
[tar_1]"i"(TAR_1), [dscr_1]"i"(DSCR_1), [tar_2]"i"(TAR_2),
- [dscr_2]"i"(DSCR_2), [cptr1] "r" (&cptr[1])
+ [dscr_2]"i"(DSCR_2), [cptr1] "b" (&cptr[1])
: "memory", "r0", "r1", "r3", "r4", "r5", "r6"
);
diff --git a/tools/testing/selftests/powerpc/ptrace/ptrace-tm-vsx.c b/tools/testing/selftests/powerpc/ptrace/ptrace-tm-vsx.c
index 17c23cabac3e..dfba80058977 100644
--- a/tools/testing/selftests/powerpc/ptrace/ptrace-tm-vsx.c
+++ b/tools/testing/selftests/powerpc/ptrace/ptrace-tm-vsx.c
@@ -65,8 +65,7 @@ trans:
"3: ;"
: [res] "=r" (result), [texasr] "=r" (texasr)
- : [fp_load] "r" (fp_load), [fp_load_ckpt] "r" (fp_load_ckpt),
- [sprn_texasr] "i" (SPRN_TEXASR), [cptr1] "r" (&cptr[1])
+ : [sprn_texasr] "i" (SPRN_TEXASR), [cptr1] "b" (&cptr[1])
: "memory", "r0", "r1", "r3", "r4",
"r7", "r8", "r9", "r10", "r11"
);
diff --git a/tools/testing/selftests/powerpc/tm/.gitignore b/tools/testing/selftests/powerpc/tm/.gitignore
index c3ee8393dae8..208452a93e2c 100644
--- a/tools/testing/selftests/powerpc/tm/.gitignore
+++ b/tools/testing/selftests/powerpc/tm/.gitignore
@@ -11,6 +11,7 @@ tm-signal-context-chk-fpu
tm-signal-context-chk-gpr
tm-signal-context-chk-vmx
tm-signal-context-chk-vsx
+tm-signal-sigreturn-nt
tm-vmx-unavail
tm-unavailable
tm-trap
diff --git a/tools/testing/selftests/powerpc/tm/Makefile b/tools/testing/selftests/powerpc/tm/Makefile
index 9fc2cf6fbc92..75a685359129 100644
--- a/tools/testing/selftests/powerpc/tm/Makefile
+++ b/tools/testing/selftests/powerpc/tm/Makefile
@@ -4,7 +4,7 @@ SIGNAL_CONTEXT_CHK_TESTS := tm-signal-context-chk-gpr tm-signal-context-chk-fpu
TEST_GEN_PROGS := tm-resched-dscr tm-syscall tm-signal-msr-resv tm-signal-stack \
tm-vmxcopy tm-fork tm-tar tm-tmspr tm-vmx-unavail tm-unavailable tm-trap \
- $(SIGNAL_CONTEXT_CHK_TESTS) tm-sigreturn
+ $(SIGNAL_CONTEXT_CHK_TESTS) tm-sigreturn tm-signal-sigreturn-nt
top_srcdir = ../../../../..
include ../../lib.mk
diff --git a/tools/testing/selftests/powerpc/tm/tm-signal-sigreturn-nt.c b/tools/testing/selftests/powerpc/tm/tm-signal-sigreturn-nt.c
new file mode 100644
index 000000000000..56fbf9f6bbf3
--- /dev/null
+++ b/tools/testing/selftests/powerpc/tm/tm-signal-sigreturn-nt.c
@@ -0,0 +1,46 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright 2018, Breno Leitao, Gustavo Romero, IBM Corp.
+ *
+ * A test case that creates a signal and starts a suspended transaction
+ * inside the signal handler.
+ *
+ * It returns from the signal handler with the CPU at suspended state, but
+ * without setting usercontext MSR Transaction State (TS) fields.
+ */
+
+#define _GNU_SOURCE
+#include <stdlib.h>
+#include <signal.h>
+
+#include "utils.h"
+
+void trap_signal_handler(int signo, siginfo_t *si, void *uc)
+{
+ ucontext_t *ucp = (ucontext_t *) uc;
+
+ asm("tbegin.; tsuspend.;");
+
+ /* Skip 'trap' instruction if it succeed */
+ ucp->uc_mcontext.regs->nip += 4;
+}
+
+int tm_signal_sigreturn_nt(void)
+{
+ struct sigaction trap_sa;
+
+ trap_sa.sa_flags = SA_SIGINFO;
+ trap_sa.sa_sigaction = trap_signal_handler;
+
+ sigaction(SIGTRAP, &trap_sa, NULL);
+
+ raise(SIGTRAP);
+
+ return EXIT_SUCCESS;
+}
+
+int main(int argc, char **argv)
+{
+ test_harness(tm_signal_sigreturn_nt, "tm_signal_sigreturn_nt");
+}
+