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authorLinus Torvalds <torvalds@linux-foundation.org>2016-03-19 15:38:41 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2016-03-19 15:38:41 -0700
commitd5e2d00898bdfed9586472679760fc81a2ca2d02 (patch)
tree55ac781983bf7144230ad8a5a995ce02b6ac39a1 /tools
parent31e182363b39d84031eadf0caf6d99fd9eb056f0 (diff)
parent6e669f085d595cb6053920832c89f1a13067db44 (diff)
downloadlinux-sh-d5e2d00898bdfed9586472679760fc81a2ca2d02.tar.gz
Merge tag 'powerpc-4.6-1' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux
Pull powerpc updates from Michael Ellerman: "This was delayed a day or two by some build-breakage on old toolchains which we've now fixed. There's two PCI commits both acked by Bjorn. There's one commit to mm/hugepage.c which is (co)authored by Kirill. Highlights: - Restructure Linux PTE on Book3S/64 to Radix format from Paul Mackerras - Book3s 64 MMU cleanup in preparation for Radix MMU from Aneesh Kumar K.V - Add POWER9 cputable entry from Michael Neuling - FPU/Altivec/VSX save/restore optimisations from Cyril Bur - Add support for new ftrace ABI on ppc64le from Torsten Duwe Various cleanups & minor fixes from: - Adam Buchbinder, Andrew Donnellan, Balbir Singh, Christophe Leroy, Cyril Bur, Luis Henriques, Madhavan Srinivasan, Pan Xinhui, Russell Currey, Sukadev Bhattiprolu, Suraj Jitindar Singh. General: - atomics: Allow architectures to define their own __atomic_op_* helpers from Boqun Feng - Implement atomic{, 64}_*_return_* variants and acquire/release/ relaxed variants for (cmp)xchg from Boqun Feng - Add powernv_defconfig from Jeremy Kerr - Fix BUG_ON() reporting in real mode from Balbir Singh - Add xmon command to dump OPAL msglog from Andrew Donnellan - Add xmon command to dump process/task similar to ps(1) from Douglas Miller - Clean up memory hotplug failure paths from David Gibson pci/eeh: - Redesign SR-IOV on PowerNV to give absolute isolation between VFs from Wei Yang. - EEH Support for SRIOV VFs from Wei Yang and Gavin Shan. - PCI/IOV: Rename and export virtfn_{add, remove} from Wei Yang - PCI: Add pcibios_bus_add_device() weak function from Wei Yang - MAINTAINERS: Update EEH details and maintainership from Russell Currey cxl: - Support added to the CXL driver for running on both bare-metal and hypervisor systems, from Christophe Lombard and Frederic Barrat. - Ignore probes for virtual afu pci devices from Vaibhav Jain perf: - Export Power8 generic and cache events to sysfs from Sukadev Bhattiprolu - hv-24x7: Fix usage with chip events, display change in counter values, display domain indices in sysfs, eliminate domain suffix in event names, from Sukadev Bhattiprolu Freescale: - Updates from Scott: "Highlights include 8xx optimizations, 32-bit checksum optimizations, 86xx consolidation, e5500/e6500 cpu hotplug, more fman and other dt bits, and minor fixes/cleanup" * tag 'powerpc-4.6-1' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux: (179 commits) powerpc: Fix unrecoverable SLB miss during restore_math() powerpc/8xx: Fix do_mtspr_cpu6() build on older compilers powerpc/rcpm: Fix build break when SMP=n powerpc/book3e-64: Use hardcoded mttmr opcode powerpc/fsl/dts: Add "jedec,spi-nor" flash compatible powerpc/T104xRDB: add tdm riser card node to device tree powerpc32: PAGE_EXEC required for inittext powerpc/mpc85xx: Add pcsphy nodes to FManV3 device tree powerpc/mpc85xx: Add MDIO bus muxing support to the board device tree(s) powerpc/86xx: Introduce and use common dtsi powerpc/86xx: Update device tree powerpc/86xx: Move dts files to fsl directory powerpc/86xx: Switch to kconfig fragments approach powerpc/86xx: Update defconfigs powerpc/86xx: Consolidate common platform code powerpc32: Remove one insn in mulhdu powerpc32: small optimisation in flush_icache_range() powerpc: Simplify test in __dma_sync() powerpc32: move xxxxx_dcache_range() functions inline powerpc32: Remove clear_pages() and define clear_page() inline ...
Diffstat (limited to 'tools')
-rw-r--r--tools/testing/selftests/powerpc/Makefile5
-rw-r--r--tools/testing/selftests/powerpc/basic_asm.h70
-rw-r--r--tools/testing/selftests/powerpc/math/.gitignore6
-rw-r--r--tools/testing/selftests/powerpc/math/Makefile19
-rw-r--r--tools/testing/selftests/powerpc/math/fpu_asm.S198
-rw-r--r--tools/testing/selftests/powerpc/math/fpu_preempt.c113
-rw-r--r--tools/testing/selftests/powerpc/math/fpu_signal.c135
-rw-r--r--tools/testing/selftests/powerpc/math/fpu_syscall.c90
-rw-r--r--tools/testing/selftests/powerpc/math/vmx_asm.S235
-rw-r--r--tools/testing/selftests/powerpc/math/vmx_preempt.c112
-rw-r--r--tools/testing/selftests/powerpc/math/vmx_signal.c156
-rw-r--r--tools/testing/selftests/powerpc/math/vmx_syscall.c91
-rw-r--r--tools/testing/selftests/powerpc/tm/tm-signal-msr-resv.c2
13 files changed, 1229 insertions, 3 deletions
diff --git a/tools/testing/selftests/powerpc/Makefile b/tools/testing/selftests/powerpc/Makefile
index 0c2706bda330..b08f77cbe31b 100644
--- a/tools/testing/selftests/powerpc/Makefile
+++ b/tools/testing/selftests/powerpc/Makefile
@@ -8,7 +8,7 @@ ifeq ($(ARCH),powerpc)
GIT_VERSION = $(shell git describe --always --long --dirty || echo "unknown")
-CFLAGS := -Wall -O2 -flto -Wall -Werror -DGIT_VERSION='"$(GIT_VERSION)"' -I$(CURDIR) $(CFLAGS)
+CFLAGS := -Wall -O2 -Wall -Werror -DGIT_VERSION='"$(GIT_VERSION)"' -I$(CURDIR) $(CFLAGS)
export CFLAGS
@@ -22,7 +22,8 @@ SUB_DIRS = benchmarks \
switch_endian \
syscalls \
tm \
- vphn
+ vphn \
+ math
endif
diff --git a/tools/testing/selftests/powerpc/basic_asm.h b/tools/testing/selftests/powerpc/basic_asm.h
new file mode 100644
index 000000000000..3349a0704d1a
--- /dev/null
+++ b/tools/testing/selftests/powerpc/basic_asm.h
@@ -0,0 +1,70 @@
+#ifndef _SELFTESTS_POWERPC_BASIC_ASM_H
+#define _SELFTESTS_POWERPC_BASIC_ASM_H
+
+#include <ppc-asm.h>
+#include <asm/unistd.h>
+
+#define LOAD_REG_IMMEDIATE(reg,expr) \
+ lis reg,(expr)@highest; \
+ ori reg,reg,(expr)@higher; \
+ rldicr reg,reg,32,31; \
+ oris reg,reg,(expr)@high; \
+ ori reg,reg,(expr)@l;
+
+/*
+ * Note: These macros assume that variables being stored on the stack are
+ * doublewords, while this is usually the case it may not always be the
+ * case for each use case.
+ */
+#if defined(_CALL_ELF) && _CALL_ELF == 2
+#define STACK_FRAME_MIN_SIZE 32
+#define STACK_FRAME_TOC_POS 24
+#define __STACK_FRAME_PARAM(_param) (32 + ((_param)*8))
+#define __STACK_FRAME_LOCAL(_num_params,_var_num) ((STACK_FRAME_PARAM(_num_params)) + ((_var_num)*8))
+#else
+#define STACK_FRAME_MIN_SIZE 112
+#define STACK_FRAME_TOC_POS 40
+#define __STACK_FRAME_PARAM(i) (48 + ((i)*8))
+
+/*
+ * Caveat: if a function passed more than 8 doublewords, the caller will have
+ * made more space... which would render the 112 incorrect.
+ */
+#define __STACK_FRAME_LOCAL(_num_params,_var_num) (112 + ((_var_num)*8))
+#endif
+
+/* Parameter x saved to the stack */
+#define STACK_FRAME_PARAM(var) __STACK_FRAME_PARAM(var)
+
+/* Local variable x saved to the stack after x parameters */
+#define STACK_FRAME_LOCAL(num_params,var) __STACK_FRAME_LOCAL(num_params,var)
+#define STACK_FRAME_LR_POS 16
+#define STACK_FRAME_CR_POS 8
+
+/*
+ * It is very important to note here that _extra is the extra amount of
+ * stack space needed. This space can be accessed using STACK_FRAME_PARAM()
+ * or STACK_FRAME_LOCAL() macros.
+ *
+ * r1 and r2 are not defined in ppc-asm.h (instead they are defined as sp
+ * and toc). Kernel programmers tend to prefer rX even for r1 and r2, hence
+ * %1 and %r2. r0 is defined in ppc-asm.h and therefore %r0 gets
+ * preprocessed incorrectly, hence r0.
+ */
+#define PUSH_BASIC_STACK(_extra) \
+ mflr r0; \
+ std r0,STACK_FRAME_LR_POS(%r1); \
+ stdu %r1,-(_extra + STACK_FRAME_MIN_SIZE)(%r1); \
+ mfcr r0; \
+ stw r0,STACK_FRAME_CR_POS(%r1); \
+ std %r2,STACK_FRAME_TOC_POS(%r1);
+
+#define POP_BASIC_STACK(_extra) \
+ ld %r2,STACK_FRAME_TOC_POS(%r1); \
+ lwz r0,STACK_FRAME_CR_POS(%r1); \
+ mtcr r0; \
+ addi %r1,%r1,(_extra + STACK_FRAME_MIN_SIZE); \
+ ld r0,STACK_FRAME_LR_POS(%r1); \
+ mtlr r0;
+
+#endif /* _SELFTESTS_POWERPC_BASIC_ASM_H */
diff --git a/tools/testing/selftests/powerpc/math/.gitignore b/tools/testing/selftests/powerpc/math/.gitignore
new file mode 100644
index 000000000000..4fe13a439fd7
--- /dev/null
+++ b/tools/testing/selftests/powerpc/math/.gitignore
@@ -0,0 +1,6 @@
+fpu_syscall
+vmx_syscall
+fpu_preempt
+vmx_preempt
+fpu_signal
+vmx_signal
diff --git a/tools/testing/selftests/powerpc/math/Makefile b/tools/testing/selftests/powerpc/math/Makefile
new file mode 100644
index 000000000000..5b88875d5955
--- /dev/null
+++ b/tools/testing/selftests/powerpc/math/Makefile
@@ -0,0 +1,19 @@
+TEST_PROGS := fpu_syscall fpu_preempt fpu_signal vmx_syscall vmx_preempt vmx_signal
+
+all: $(TEST_PROGS)
+
+$(TEST_PROGS): ../harness.c
+$(TEST_PROGS): CFLAGS += -O2 -g -pthread -m64 -maltivec
+
+fpu_syscall: fpu_asm.S
+fpu_preempt: fpu_asm.S
+fpu_signal: fpu_asm.S
+
+vmx_syscall: vmx_asm.S
+vmx_preempt: vmx_asm.S
+vmx_signal: vmx_asm.S
+
+include ../../lib.mk
+
+clean:
+ rm -f $(TEST_PROGS) *.o
diff --git a/tools/testing/selftests/powerpc/math/fpu_asm.S b/tools/testing/selftests/powerpc/math/fpu_asm.S
new file mode 100644
index 000000000000..f3711d80e709
--- /dev/null
+++ b/tools/testing/selftests/powerpc/math/fpu_asm.S
@@ -0,0 +1,198 @@
+/*
+ * Copyright 2015, Cyril Bur, IBM Corp.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version
+ * 2 of the License, or (at your option) any later version.
+ */
+
+#include "../basic_asm.h"
+
+#define PUSH_FPU(pos) \
+ stfd f14,pos(sp); \
+ stfd f15,pos+8(sp); \
+ stfd f16,pos+16(sp); \
+ stfd f17,pos+24(sp); \
+ stfd f18,pos+32(sp); \
+ stfd f19,pos+40(sp); \
+ stfd f20,pos+48(sp); \
+ stfd f21,pos+56(sp); \
+ stfd f22,pos+64(sp); \
+ stfd f23,pos+72(sp); \
+ stfd f24,pos+80(sp); \
+ stfd f25,pos+88(sp); \
+ stfd f26,pos+96(sp); \
+ stfd f27,pos+104(sp); \
+ stfd f28,pos+112(sp); \
+ stfd f29,pos+120(sp); \
+ stfd f30,pos+128(sp); \
+ stfd f31,pos+136(sp);
+
+#define POP_FPU(pos) \
+ lfd f14,pos(sp); \
+ lfd f15,pos+8(sp); \
+ lfd f16,pos+16(sp); \
+ lfd f17,pos+24(sp); \
+ lfd f18,pos+32(sp); \
+ lfd f19,pos+40(sp); \
+ lfd f20,pos+48(sp); \
+ lfd f21,pos+56(sp); \
+ lfd f22,pos+64(sp); \
+ lfd f23,pos+72(sp); \
+ lfd f24,pos+80(sp); \
+ lfd f25,pos+88(sp); \
+ lfd f26,pos+96(sp); \
+ lfd f27,pos+104(sp); \
+ lfd f28,pos+112(sp); \
+ lfd f29,pos+120(sp); \
+ lfd f30,pos+128(sp); \
+ lfd f31,pos+136(sp);
+
+# Careful calling this, it will 'clobber' fpu (by design)
+# Don't call this from C
+FUNC_START(load_fpu)
+ lfd f14,0(r3)
+ lfd f15,8(r3)
+ lfd f16,16(r3)
+ lfd f17,24(r3)
+ lfd f18,32(r3)
+ lfd f19,40(r3)
+ lfd f20,48(r3)
+ lfd f21,56(r3)
+ lfd f22,64(r3)
+ lfd f23,72(r3)
+ lfd f24,80(r3)
+ lfd f25,88(r3)
+ lfd f26,96(r3)
+ lfd f27,104(r3)
+ lfd f28,112(r3)
+ lfd f29,120(r3)
+ lfd f30,128(r3)
+ lfd f31,136(r3)
+ blr
+FUNC_END(load_fpu)
+
+FUNC_START(check_fpu)
+ mr r4,r3
+ li r3,1 # assume a bad result
+ lfd f0,0(r4)
+ fcmpu cr1,f0,f14
+ bne cr1,1f
+ lfd f0,8(r4)
+ fcmpu cr1,f0,f15
+ bne cr1,1f
+ lfd f0,16(r4)
+ fcmpu cr1,f0,f16
+ bne cr1,1f
+ lfd f0,24(r4)
+ fcmpu cr1,f0,f17
+ bne cr1,1f
+ lfd f0,32(r4)
+ fcmpu cr1,f0,f18
+ bne cr1,1f
+ lfd f0,40(r4)
+ fcmpu cr1,f0,f19
+ bne cr1,1f
+ lfd f0,48(r4)
+ fcmpu cr1,f0,f20
+ bne cr1,1f
+ lfd f0,56(r4)
+ fcmpu cr1,f0,f21
+ bne cr1,1f
+ lfd f0,64(r4)
+ fcmpu cr1,f0,f22
+ bne cr1,1f
+ lfd f0,72(r4)
+ fcmpu cr1,f0,f23
+ bne cr1,1f
+ lfd f0,80(r4)
+ fcmpu cr1,f0,f24
+ bne cr1,1f
+ lfd f0,88(r4)
+ fcmpu cr1,f0,f25
+ bne cr1,1f
+ lfd f0,96(r4)
+ fcmpu cr1,f0,f26
+ bne cr1,1f
+ lfd f0,104(r4)
+ fcmpu cr1,f0,f27
+ bne cr1,1f
+ lfd f0,112(r4)
+ fcmpu cr1,f0,f28
+ bne cr1,1f
+ lfd f0,120(r4)
+ fcmpu cr1,f0,f29
+ bne cr1,1f
+ lfd f0,128(r4)
+ fcmpu cr1,f0,f30
+ bne cr1,1f
+ lfd f0,136(r4)
+ fcmpu cr1,f0,f31
+ bne cr1,1f
+ li r3,0 # Success!!!
+1: blr
+
+FUNC_START(test_fpu)
+ # r3 holds pointer to where to put the result of fork
+ # r4 holds pointer to the pid
+ # f14-f31 are non volatiles
+ PUSH_BASIC_STACK(256)
+ std r3,STACK_FRAME_PARAM(0)(sp) # Address of darray
+ std r4,STACK_FRAME_PARAM(1)(sp) # Address of pid
+ PUSH_FPU(STACK_FRAME_LOCAL(2,0))
+
+ bl load_fpu
+ nop
+ li r0,__NR_fork
+ sc
+
+ # pass the result of the fork to the caller
+ ld r9,STACK_FRAME_PARAM(1)(sp)
+ std r3,0(r9)
+
+ ld r3,STACK_FRAME_PARAM(0)(sp)
+ bl check_fpu
+ nop
+
+ POP_FPU(STACK_FRAME_LOCAL(2,0))
+ POP_BASIC_STACK(256)
+ blr
+FUNC_END(test_fpu)
+
+# int preempt_fpu(double *darray, int *threads_running, int *running)
+# On starting will (atomically) decrement not_ready as a signal that the FPU
+# has been loaded with darray. Will proceed to check the validity of the FPU
+# registers while running is not zero.
+FUNC_START(preempt_fpu)
+ PUSH_BASIC_STACK(256)
+ std r3,STACK_FRAME_PARAM(0)(sp) # double *darray
+ std r4,STACK_FRAME_PARAM(1)(sp) # int *threads_starting
+ std r5,STACK_FRAME_PARAM(2)(sp) # int *running
+ PUSH_FPU(STACK_FRAME_LOCAL(3,0))
+
+ bl load_fpu
+ nop
+
+ sync
+ # Atomic DEC
+ ld r3,STACK_FRAME_PARAM(1)(sp)
+1: lwarx r4,0,r3
+ addi r4,r4,-1
+ stwcx. r4,0,r3
+ bne- 1b
+
+2: ld r3,STACK_FRAME_PARAM(0)(sp)
+ bl check_fpu
+ nop
+ cmpdi r3,0
+ bne 3f
+ ld r4,STACK_FRAME_PARAM(2)(sp)
+ ld r5,0(r4)
+ cmpwi r5,0
+ bne 2b
+
+3: POP_FPU(STACK_FRAME_LOCAL(3,0))
+ POP_BASIC_STACK(256)
+ blr
+FUNC_END(preempt_fpu)
diff --git a/tools/testing/selftests/powerpc/math/fpu_preempt.c b/tools/testing/selftests/powerpc/math/fpu_preempt.c
new file mode 100644
index 000000000000..0f85b79d883d
--- /dev/null
+++ b/tools/testing/selftests/powerpc/math/fpu_preempt.c
@@ -0,0 +1,113 @@
+/*
+ * Copyright 2015, Cyril Bur, IBM Corp.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version
+ * 2 of the License, or (at your option) any later version.
+ *
+ * This test attempts to see if the FPU registers change across preemption.
+ * Two things should be noted here a) The check_fpu function in asm only checks
+ * the non volatile registers as it is reused from the syscall test b) There is
+ * no way to be sure preemption happened so this test just uses many threads
+ * and a long wait. As such, a successful test doesn't mean much but a failure
+ * is bad.
+ */
+
+#include <stdio.h>
+#include <unistd.h>
+#include <sys/syscall.h>
+#include <sys/time.h>
+#include <sys/types.h>
+#include <sys/wait.h>
+#include <stdlib.h>
+#include <pthread.h>
+
+#include "utils.h"
+
+/* Time to wait for workers to get preempted (seconds) */
+#define PREEMPT_TIME 20
+/*
+ * Factor by which to multiply number of online CPUs for total number of
+ * worker threads
+ */
+#define THREAD_FACTOR 8
+
+
+__thread double darray[] = {0.1, 0.2, 0.3, 0.4, 0.5, 0.6, 0.7, 0.8, 0.9, 1.0,
+ 1.1, 1.2, 1.3, 1.4, 1.5, 1.6, 1.7, 1.8, 1.9, 2.0,
+ 2.1};
+
+int threads_starting;
+int running;
+
+extern void preempt_fpu(double *darray, int *threads_starting, int *running);
+
+void *preempt_fpu_c(void *p)
+{
+ int i;
+ srand(pthread_self());
+ for (i = 0; i < 21; i++)
+ darray[i] = rand();
+
+ /* Test failed if it ever returns */
+ preempt_fpu(darray, &threads_starting, &running);
+
+ return p;
+}
+
+int test_preempt_fpu(void)
+{
+ int i, rc, threads;
+ pthread_t *tids;
+
+ threads = sysconf(_SC_NPROCESSORS_ONLN) * THREAD_FACTOR;
+ tids = malloc((threads) * sizeof(pthread_t));
+ FAIL_IF(!tids);
+
+ running = true;
+ threads_starting = threads;
+ for (i = 0; i < threads; i++) {
+ rc = pthread_create(&tids[i], NULL, preempt_fpu_c, NULL);
+ FAIL_IF(rc);
+ }
+
+ setbuf(stdout, NULL);
+ /* Not really necessary but nice to wait for every thread to start */
+ printf("\tWaiting for all workers to start...");
+ while(threads_starting)
+ asm volatile("": : :"memory");
+ printf("done\n");
+
+ printf("\tWaiting for %d seconds to let some workers get preempted...", PREEMPT_TIME);
+ sleep(PREEMPT_TIME);
+ printf("done\n");
+
+ printf("\tStopping workers...");
+ /*
+ * Working are checking this value every loop. In preempt_fpu 'cmpwi r5,0; bne 2b'.
+ * r5 will have loaded the value of running.
+ */
+ running = 0;
+ for (i = 0; i < threads; i++) {
+ void *rc_p;
+ pthread_join(tids[i], &rc_p);
+
+ /*
+ * Harness will say the fail was here, look at why preempt_fpu
+ * returned
+ */
+ if ((long) rc_p)
+ printf("oops\n");
+ FAIL_IF((long) rc_p);
+ }
+ printf("done\n");
+
+ free(tids);
+ return 0;
+}
+
+int main(int argc, char *argv[])
+{
+ return test_harness(test_preempt_fpu, "fpu_preempt");
+}
diff --git a/tools/testing/selftests/powerpc/math/fpu_signal.c b/tools/testing/selftests/powerpc/math/fpu_signal.c
new file mode 100644
index 000000000000..888aa51b4204
--- /dev/null
+++ b/tools/testing/selftests/powerpc/math/fpu_signal.c
@@ -0,0 +1,135 @@
+/*
+ * Copyright 2015, Cyril Bur, IBM Corp.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version
+ * 2 of the License, or (at your option) any later version.
+ *
+ * This test attempts to see if the FPU registers are correctly reported in a
+ * signal context. Each worker just spins checking its FPU registers, at some
+ * point a signal will interrupt it and C code will check the signal context
+ * ensuring it is also the same.
+ */
+
+#include <stdio.h>
+#include <unistd.h>
+#include <sys/syscall.h>
+#include <sys/time.h>
+#include <sys/types.h>
+#include <sys/wait.h>
+#include <stdlib.h>
+#include <pthread.h>
+
+#include "utils.h"
+
+/* Number of times each thread should receive the signal */
+#define ITERATIONS 10
+/*
+ * Factor by which to multiply number of online CPUs for total number of
+ * worker threads
+ */
+#define THREAD_FACTOR 8
+
+__thread double darray[] = {0.1, 0.2, 0.3, 0.4, 0.5, 0.6, 0.7, 0.8, 0.9, 1.0,
+ 1.1, 1.2, 1.3, 1.4, 1.5, 1.6, 1.7, 1.8, 1.9, 2.0,
+ 2.1};
+
+bool bad_context;
+int threads_starting;
+int running;
+
+extern long preempt_fpu(double *darray, int *threads_starting, int *running);
+
+void signal_fpu_sig(int sig, siginfo_t *info, void *context)
+{
+ int i;
+ ucontext_t *uc = context;
+ mcontext_t *mc = &uc->uc_mcontext;
+
+ /* Only the non volatiles were loaded up */
+ for (i = 14; i < 32; i++) {
+ if (mc->fp_regs[i] != darray[i - 14]) {
+ bad_context = true;
+ break;
+ }
+ }
+}
+
+void *signal_fpu_c(void *p)
+{
+ int i;
+ long rc;
+ struct sigaction act;
+ act.sa_sigaction = signal_fpu_sig;
+ act.sa_flags = SA_SIGINFO;
+ rc = sigaction(SIGUSR1, &act, NULL);
+ if (rc)
+ return p;
+
+ srand(pthread_self());
+ for (i = 0; i < 21; i++)
+ darray[i] = rand();
+
+ rc = preempt_fpu(darray, &threads_starting, &running);
+
+ return (void *) rc;
+}
+
+int test_signal_fpu(void)
+{
+ int i, j, rc, threads;
+ void *rc_p;
+ pthread_t *tids;
+
+ threads = sysconf(_SC_NPROCESSORS_ONLN) * THREAD_FACTOR;
+ tids = malloc(threads * sizeof(pthread_t));
+ FAIL_IF(!tids);
+
+ running = true;
+ threads_starting = threads;
+ for (i = 0; i < threads; i++) {
+ rc = pthread_create(&tids[i], NULL, signal_fpu_c, NULL);
+ FAIL_IF(rc);
+ }
+
+ setbuf(stdout, NULL);
+ printf("\tWaiting for all workers to start...");
+ while (threads_starting)
+ asm volatile("": : :"memory");
+ printf("done\n");
+
+ printf("\tSending signals to all threads %d times...", ITERATIONS);
+ for (i = 0; i < ITERATIONS; i++) {
+ for (j = 0; j < threads; j++) {
+ pthread_kill(tids[j], SIGUSR1);
+ }
+ sleep(1);
+ }
+ printf("done\n");
+
+ printf("\tStopping workers...");
+ running = 0;
+ for (i = 0; i < threads; i++) {
+ pthread_join(tids[i], &rc_p);
+
+ /*
+ * Harness will say the fail was here, look at why signal_fpu
+ * returned
+ */
+ if ((long) rc_p || bad_context)
+ printf("oops\n");
+ if (bad_context)
+ fprintf(stderr, "\t!! bad_context is true\n");
+ FAIL_IF((long) rc_p || bad_context);
+ }
+ printf("done\n");
+
+ free(tids);
+ return 0;
+}
+
+int main(int argc, char *argv[])
+{
+ return test_harness(test_signal_fpu, "fpu_signal");
+}
diff --git a/tools/testing/selftests/powerpc/math/fpu_syscall.c b/tools/testing/selftests/powerpc/math/fpu_syscall.c
new file mode 100644
index 000000000000..949e6721256d
--- /dev/null
+++ b/tools/testing/selftests/powerpc/math/fpu_syscall.c
@@ -0,0 +1,90 @@
+/*
+ * Copyright 2015, Cyril Bur, IBM Corp.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version
+ * 2 of the License, or (at your option) any later version.
+ *
+ * This test attempts to see if the FPU registers change across a syscall (fork).
+ */
+
+#include <stdio.h>
+#include <unistd.h>
+#include <sys/syscall.h>
+#include <sys/time.h>
+#include <sys/types.h>
+#include <sys/wait.h>
+#include <stdlib.h>
+
+#include "utils.h"
+
+extern int test_fpu(double *darray, pid_t *pid);
+
+double darray[] = {0.1, 0.2, 0.3, 0.4, 0.5, 0.6, 0.7, 0.8, 0.9, 1.0,
+ 1.1, 1.2, 1.3, 1.4, 1.5, 1.6, 1.7, 1.8, 1.9, 2.0,
+ 2.1};
+
+int syscall_fpu(void)
+{
+ pid_t fork_pid;
+ int i;
+ int ret;
+ int child_ret;
+ for (i = 0; i < 1000; i++) {
+ /* test_fpu will fork() */
+ ret = test_fpu(darray, &fork_pid);
+ if (fork_pid == -1)
+ return -1;
+ if (fork_pid == 0)
+ exit(ret);
+ waitpid(fork_pid, &child_ret, 0);
+ if (ret || child_ret)
+ return 1;
+ }
+
+ return 0;
+}
+
+int test_syscall_fpu(void)
+{
+ /*
+ * Setup an environment with much context switching
+ */
+ pid_t pid2;
+ pid_t pid = fork();
+ int ret;
+ int child_ret;
+ FAIL_IF(pid == -1);
+
+ pid2 = fork();
+ /* Can't FAIL_IF(pid2 == -1); because already forked once */
+ if (pid2 == -1) {
+ /*
+ * Couldn't fork, ensure test is a fail
+ */
+ child_ret = ret = 1;
+ } else {
+ ret = syscall_fpu();
+ if (pid2)
+ waitpid(pid2, &child_ret, 0);
+ else
+ exit(ret);
+ }
+
+ ret |= child_ret;
+
+ if (pid)
+ waitpid(pid, &child_ret, 0);
+ else
+ exit(ret);
+
+ FAIL_IF(ret || child_ret);
+ return 0;
+}
+
+int main(int argc, char *argv[])
+{
+ return test_harness(test_syscall_fpu, "syscall_fpu");
+
+}
diff --git a/tools/testing/selftests/powerpc/math/vmx_asm.S b/tools/testing/selftests/powerpc/math/vmx_asm.S
new file mode 100644
index 000000000000..1b8c248b3ac1
--- /dev/null
+++ b/tools/testing/selftests/powerpc/math/vmx_asm.S
@@ -0,0 +1,235 @@
+/*
+ * Copyright 2015, Cyril Bur, IBM Corp.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version
+ * 2 of the License, or (at your option) any later version.
+ */
+
+#include "../basic_asm.h"
+
+# POS MUST BE 16 ALIGNED!
+#define PUSH_VMX(pos,reg) \
+ li reg,pos; \
+ stvx v20,reg,sp; \
+ addi reg,reg,16; \
+ stvx v21,reg,sp; \
+ addi reg,reg,16; \
+ stvx v22,reg,sp; \
+ addi reg,reg,16; \
+ stvx v23,reg,sp; \
+ addi reg,reg,16; \
+ stvx v24,reg,sp; \
+ addi reg,reg,16; \
+ stvx v25,reg,sp; \
+ addi reg,reg,16; \
+ stvx v26,reg,sp; \
+ addi reg,reg,16; \
+ stvx v27,reg,sp; \
+ addi reg,reg,16; \
+ stvx v28,reg,sp; \
+ addi reg,reg,16; \
+ stvx v29,reg,sp; \
+ addi reg,reg,16; \
+ stvx v30,reg,sp; \
+ addi reg,reg,16; \
+ stvx v31,reg,sp;
+
+# POS MUST BE 16 ALIGNED!
+#define POP_VMX(pos,reg) \
+ li reg,pos; \
+ lvx v20,reg,sp; \
+ addi reg,reg,16; \
+ lvx v21,reg,sp; \
+ addi reg,reg,16; \
+ lvx v22,reg,sp; \
+ addi reg,reg,16; \
+ lvx v23,reg,sp; \
+ addi reg,reg,16; \
+ lvx v24,reg,sp; \
+ addi reg,reg,16; \
+ lvx v25,reg,sp; \
+ addi reg,reg,16; \
+ lvx v26,reg,sp; \
+ addi reg,reg,16; \
+ lvx v27,reg,sp; \
+ addi reg,reg,16; \
+ lvx v28,reg,sp; \
+ addi reg,reg,16; \
+ lvx v29,reg,sp; \
+ addi reg,reg,16; \
+ lvx v30,reg,sp; \
+ addi reg,reg,16; \
+ lvx v31,reg,sp;
+
+# Carefull this will 'clobber' vmx (by design)
+# Don't call this from C
+FUNC_START(load_vmx)
+ li r5,0
+ lvx v20,r5,r3
+ addi r5,r5,16
+ lvx v21,r5,r3
+ addi r5,r5,16
+ lvx v22,r5,r3
+ addi r5,r5,16
+ lvx v23,r5,r3
+ addi r5,r5,16
+ lvx v24,r5,r3
+ addi r5,r5,16
+ lvx v25,r5,r3
+ addi r5,r5,16
+ lvx v26,r5,r3
+ addi r5,r5,16
+ lvx v27,r5,r3
+ addi r5,r5,16
+ lvx v28,r5,r3
+ addi r5,r5,16
+ lvx v29,r5,r3
+ addi r5,r5,16
+ lvx v30,r5,r3
+ addi r5,r5,16
+ lvx v31,r5,r3
+ blr
+FUNC_END(load_vmx)
+
+# Should be safe from C, only touches r4, r5 and v0,v1,v2
+FUNC_START(check_vmx)
+ PUSH_BASIC_STACK(32)
+ mr r4,r3
+ li r3,1 # assume a bad result
+ li r5,0
+ lvx v0,r5,r4
+ vcmpequd. v1,v0,v20
+ vmr v2,v1
+
+ addi r5,r5,16
+ lvx v0,r5,r4
+ vcmpequd. v1,v0,v21
+ vand v2,v2,v1
+
+ addi r5,r5,16
+ lvx v0,r5,r4
+ vcmpequd. v1,v0,v22
+ vand v2,v2,v1
+
+ addi r5,r5,16
+ lvx v0,r5,r4
+ vcmpequd. v1,v0,v23
+ vand v2,v2,v1
+
+ addi r5,r5,16
+ lvx v0,r5,r4
+ vcmpequd. v1,v0,v24
+ vand v2,v2,v1
+
+ addi r5,r5,16
+ lvx v0,r5,r4
+ vcmpequd. v1,v0,v25
+ vand v2,v2,v1
+
+ addi r5,r5,16
+ lvx v0,r5,r4
+ vcmpequd. v1,v0,v26
+ vand v2,v2,v1
+
+ addi r5,r5,16
+ lvx v0,r5,r4
+ vcmpequd. v1,v0,v27
+ vand v2,v2,v1
+
+ addi r5,r5,16
+ lvx v0,r5,r4
+ vcmpequd. v1,v0,v28
+ vand v2,v2,v1
+
+ addi r5,r5,16
+ lvx v0,r5,r4
+ vcmpequd. v1,v0,v29
+ vand v2,v2,v1
+
+ addi r5,r5,16
+ lvx v0,r5,r4
+ vcmpequd. v1,v0,v30
+ vand v2,v2,v1
+
+ addi r5,r5,16
+ lvx v0,r5,r4
+ vcmpequd. v1,v0,v31
+ vand v2,v2,v1
+
+ li r5,STACK_FRAME_LOCAL(0,0)
+ stvx v2,r5,sp
+ ldx r0,r5,sp
+ cmpdi r0,0xffffffffffffffff
+ bne 1f
+ li r3,0
+1: POP_BASIC_STACK(32)
+ blr
+FUNC_END(check_vmx)
+
+# Safe from C
+FUNC_START(test_vmx)
+ # r3 holds pointer to where to put the result of fork
+ # r4 holds pointer to the pid
+ # v20-v31 are non-volatile
+ PUSH_BASIC_STACK(512)
+ std r3,STACK_FRAME_PARAM(0)(sp) # Address of varray
+ std r4,STACK_FRAME_PARAM(1)(sp) # address of pid
+ PUSH_VMX(STACK_FRAME_LOCAL(2,0),r4)
+
+ bl load_vmx
+ nop
+
+ li r0,__NR_fork
+ sc
+ # Pass the result of fork back to the caller
+ ld r9,STACK_FRAME_PARAM(1)(sp)
+ std r3,0(r9)
+
+ ld r3,STACK_FRAME_PARAM(0)(sp)
+ bl check_vmx
+ nop
+
+ POP_VMX(STACK_FRAME_LOCAL(2,0),r4)
+ POP_BASIC_STACK(512)
+ blr
+FUNC_END(test_vmx)
+
+# int preempt_vmx(vector int *varray, int *threads_starting, int *running)
+# On starting will (atomically) decrement threads_starting as a signal that
+# the VMX have been loaded with varray. Will proceed to check the validity of
+# the VMX registers while running is not zero.
+FUNC_START(preempt_vmx)
+ PUSH_BASIC_STACK(512)
+ std r3,STACK_FRAME_PARAM(0)(sp) # vector int *varray
+ std r4,STACK_FRAME_PARAM(1)(sp) # int *threads_starting
+ std r5,STACK_FRAME_PARAM(2)(sp) # int *running
+ # VMX need to write to 16 byte aligned addresses, skip STACK_FRAME_LOCAL(3,0)
+ PUSH_VMX(STACK_FRAME_LOCAL(4,0),r4)
+
+ bl load_vmx
+ nop
+
+ sync
+ # Atomic DEC
+ ld r3,STACK_FRAME_PARAM(1)(sp)
+1: lwarx r4,0,r3
+ addi r4,r4,-1
+ stwcx. r4,0,r3
+ bne- 1b
+
+2: ld r3,STACK_FRAME_PARAM(0)(sp)
+ bl check_vmx
+ nop
+ cmpdi r3,0
+ bne 3f
+ ld r4,STACK_FRAME_PARAM(2)(sp)
+ ld r5,0(r4)
+ cmpwi r5,0
+ bne 2b
+
+3: POP_VMX(STACK_FRAME_LOCAL(4,0),r4)
+ POP_BASIC_STACK(512)
+ blr
+FUNC_END(preempt_vmx)
diff --git a/tools/testing/selftests/powerpc/math/vmx_preempt.c b/tools/testing/selftests/powerpc/math/vmx_preempt.c
new file mode 100644
index 000000000000..9ef376c55b13
--- /dev/null
+++ b/tools/testing/selftests/powerpc/math/vmx_preempt.c
@@ -0,0 +1,112 @@
+/*
+ * Copyright 2015, Cyril Bur, IBM Corp.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version
+ * 2 of the License, or (at your option) any later version.
+ *
+ * This test attempts to see if the VMX registers change across preemption.
+ * Two things should be noted here a) The check_vmx function in asm only checks
+ * the non volatile registers as it is reused from the syscall test b) There is
+ * no way to be sure preemption happened so this test just uses many threads
+ * and a long wait. As such, a successful test doesn't mean much but a failure
+ * is bad.
+ */
+
+#include <stdio.h>
+#include <unistd.h>
+#include <sys/syscall.h>
+#include <sys/time.h>
+#include <sys/types.h>
+#include <sys/wait.h>
+#include <stdlib.h>
+#include <pthread.h>
+
+#include "utils.h"
+
+/* Time to wait for workers to get preempted (seconds) */
+#define PREEMPT_TIME 20
+/*
+ * Factor by which to multiply number of online CPUs for total number of
+ * worker threads
+ */
+#define THREAD_FACTOR 8
+
+__thread vector int varray[] = {{1, 2, 3, 4}, {5, 6, 7, 8}, {9, 10,11,12},
+ {13,14,15,16},{17,18,19,20},{21,22,23,24},
+ {25,26,27,28},{29,30,31,32},{33,34,35,36},
+ {37,38,39,40},{41,42,43,44},{45,46,47,48}};
+
+int threads_starting;
+int running;
+
+extern void preempt_vmx(vector int *varray, int *threads_starting, int *running);
+
+void *preempt_vmx_c(void *p)
+{
+ int i, j;
+ srand(pthread_self());
+ for (i = 0; i < 12; i++)
+ for (j = 0; j < 4; j++)
+ varray[i][j] = rand();
+
+ /* Test fails if it ever returns */
+ preempt_vmx(varray, &threads_starting, &running);
+ return p;
+}
+
+int test_preempt_vmx(void)
+{
+ int i, rc, threads;
+ pthread_t *tids;
+
+ threads = sysconf(_SC_NPROCESSORS_ONLN) * THREAD_FACTOR;
+ tids = malloc(threads * sizeof(pthread_t));
+ FAIL_IF(!tids);
+
+ running = true;
+ threads_starting = threads;
+ for (i = 0; i < threads; i++) {
+ rc = pthread_create(&tids[i], NULL, preempt_vmx_c, NULL);
+ FAIL_IF(rc);
+ }
+
+ setbuf(stdout, NULL);
+ /* Not really nessesary but nice to wait for every thread to start */
+ printf("\tWaiting for all workers to start...");
+ while(threads_starting)
+ asm volatile("": : :"memory");
+ printf("done\n");
+
+ printf("\tWaiting for %d seconds to let some workers get preempted...", PREEMPT_TIME);
+ sleep(PREEMPT_TIME);
+ printf("done\n");
+
+ printf("\tStopping workers...");
+ /*
+ * Working are checking this value every loop. In preempt_vmx 'cmpwi r5,0; bne 2b'.
+ * r5 will have loaded the value of running.
+ */
+ running = 0;
+ for (i = 0; i < threads; i++) {
+ void *rc_p;
+ pthread_join(tids[i], &rc_p);
+
+ /*
+ * Harness will say the fail was here, look at why preempt_vmx
+ * returned
+ */
+ if ((long) rc_p)
+ printf("oops\n");
+ FAIL_IF((long) rc_p);
+ }
+ printf("done\n");
+
+ return 0;
+}
+
+int main(int argc, char *argv[])
+{
+ return test_harness(test_preempt_vmx, "vmx_preempt");
+}
diff --git a/tools/testing/selftests/powerpc/math/vmx_signal.c b/tools/testing/selftests/powerpc/math/vmx_signal.c
new file mode 100644
index 000000000000..671d7533a557
--- /dev/null
+++ b/tools/testing/selftests/powerpc/math/vmx_signal.c
@@ -0,0 +1,156 @@
+/*
+ * Copyright 2015, Cyril Bur, IBM Corp.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version
+ * 2 of the License, or (at your option) any later version.
+ *
+ * This test attempts to see if the VMX registers are correctly reported in a
+ * signal context. Each worker just spins checking its VMX registers, at some
+ * point a signal will interrupt it and C code will check the signal context
+ * ensuring it is also the same.
+ */
+
+#include <stdio.h>
+#include <unistd.h>
+#include <sys/syscall.h>
+#include <sys/time.h>
+#include <sys/types.h>
+#include <sys/wait.h>
+#include <stdlib.h>
+#include <string.h>
+#include <pthread.h>
+#include <altivec.h>
+
+#include "utils.h"
+
+/* Number of times each thread should receive the signal */
+#define ITERATIONS 10
+/*
+ * Factor by which to multiply number of online CPUs for total number of
+ * worker threads
+ */
+#define THREAD_FACTOR 8
+
+__thread vector int varray[] = {{1, 2, 3, 4}, {5, 6, 7, 8}, {9, 10,11,12},
+ {13,14,15,16},{17,18,19,20},{21,22,23,24},
+ {25,26,27,28},{29,30,31,32},{33,34,35,36},
+ {37,38,39,40},{41,42,43,44},{45,46,47,48}};
+
+bool bad_context;
+int running;
+int threads_starting;
+
+extern int preempt_vmx(vector int *varray, int *threads_starting, int *sentinal);
+
+void signal_vmx_sig(int sig, siginfo_t *info, void *context)
+{
+ int i;
+ ucontext_t *uc = context;
+ mcontext_t *mc = &uc->uc_mcontext;
+
+ /* Only the non volatiles were loaded up */
+ for (i = 20; i < 32; i++) {
+ if (memcmp(mc->v_regs->vrregs[i], &varray[i - 20], 16)) {
+ int j;
+ /*
+ * Shouldn't printf() in a signal handler, however, this is a
+ * test and we've detected failure. Understanding what failed
+ * is paramount. All that happens after this is tests exit with
+ * failure.
+ */
+ printf("VMX mismatch at reg %d!\n", i);
+ printf("Reg | Actual | Expected\n");
+ for (j = 20; j < 32; j++) {
+ printf("%d | 0x%04x%04x%04x%04x | 0x%04x%04x%04x%04x\n", j, mc->v_regs->vrregs[j][0],
+ mc->v_regs->vrregs[j][1], mc->v_regs->vrregs[j][2], mc->v_regs->vrregs[j][3],
+ varray[j - 20][0], varray[j - 20][1], varray[j - 20][2], varray[j - 20][3]);
+ }
+ bad_context = true;
+ break;
+ }
+ }
+}
+
+void *signal_vmx_c(void *p)
+{
+ int i, j;
+ long rc;
+ struct sigaction act;
+ act.sa_sigaction = signal_vmx_sig;
+ act.sa_flags = SA_SIGINFO;
+ rc = sigaction(SIGUSR1, &act, NULL);
+ if (rc)
+ return p;
+
+ srand(pthread_self());
+ for (i = 0; i < 12; i++)
+ for (j = 0; j < 4; j++)
+ varray[i][j] = rand();
+
+ rc = preempt_vmx(varray, &threads_starting, &running);
+
+ return (void *) rc;
+}
+
+int test_signal_vmx(void)
+{
+ int i, j, rc, threads;
+ void *rc_p;
+ pthread_t *tids;
+
+ threads = sysconf(_SC_NPROCESSORS_ONLN) * THREAD_FACTOR;
+ tids = malloc(threads * sizeof(pthread_t));
+ FAIL_IF(!tids);
+
+ running = true;
+ threads_starting = threads;
+ for (i = 0; i < threads; i++) {
+ rc = pthread_create(&tids[i], NULL, signal_vmx_c, NULL);
+ FAIL_IF(rc);
+ }
+
+ setbuf(stdout, NULL);
+ printf("\tWaiting for %d workers to start... %d", threads, threads_starting);
+ while (threads_starting) {
+ asm volatile("": : :"memory");
+ usleep(1000);
+ printf(", %d", threads_starting);
+ }
+ printf(" ...done\n");
+
+ printf("\tSending signals to all threads %d times...", ITERATIONS);
+ for (i = 0; i < ITERATIONS; i++) {
+ for (j = 0; j < threads; j++) {
+ pthread_kill(tids[j], SIGUSR1);
+ }
+ sleep(1);
+ }
+ printf("done\n");
+
+ printf("\tKilling workers...");
+ running = 0;
+ for (i = 0; i < threads; i++) {
+ pthread_join(tids[i], &rc_p);
+
+ /*
+ * Harness will say the fail was here, look at why signal_vmx
+ * returned
+ */
+ if ((long) rc_p || bad_context)
+ printf("oops\n");
+ if (bad_context)
+ fprintf(stderr, "\t!! bad_context is true\n");
+ FAIL_IF((long) rc_p || bad_context);
+ }
+ printf("done\n");
+
+ free(tids);
+ return 0;
+}
+
+int main(int argc, char *argv[])
+{
+ return test_harness(test_signal_vmx, "vmx_signal");
+}
diff --git a/tools/testing/selftests/powerpc/math/vmx_syscall.c b/tools/testing/selftests/powerpc/math/vmx_syscall.c
new file mode 100644
index 000000000000..a017918ee1ca
--- /dev/null
+++ b/tools/testing/selftests/powerpc/math/vmx_syscall.c
@@ -0,0 +1,91 @@
+/*
+ * Copyright 2015, Cyril Bur, IBM Corp.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version
+ * 2 of the License, or (at your option) any later version.
+ *
+ * This test attempts to see if the VMX registers change across a syscall (fork).
+ */
+
+#include <altivec.h>
+#include <stdio.h>
+#include <unistd.h>
+#include <sys/syscall.h>
+#include <sys/time.h>
+#include <stdlib.h>
+#include <sys/types.h>
+#include <sys/wait.h>
+#include "utils.h"
+
+vector int varray[] = {{1, 2, 3, 4}, {5, 6, 7, 8}, {9, 10,11,12},
+ {13,14,15,16},{17,18,19,20},{21,22,23,24},
+ {25,26,27,28},{29,30,31,32},{33,34,35,36},
+ {37,38,39,40},{41,42,43,44},{45,46,47,48}};
+
+extern int test_vmx(vector int *varray, pid_t *pid);
+
+int vmx_syscall(void)
+{
+ pid_t fork_pid;
+ int i;
+ int ret;
+ int child_ret;
+ for (i = 0; i < 1000; i++) {
+ /* test_vmx will fork() */
+ ret = test_vmx(varray, &fork_pid);
+ if (fork_pid == -1)
+ return -1;
+ if (fork_pid == 0)
+ exit(ret);
+ waitpid(fork_pid, &child_ret, 0);
+ if (ret || child_ret)
+ return 1;
+ }
+
+ return 0;
+}
+
+int test_vmx_syscall(void)
+{
+ /*
+ * Setup an environment with much context switching
+ */
+ pid_t pid2;
+ pid_t pid = fork();
+ int ret;
+ int child_ret;
+ FAIL_IF(pid == -1);
+
+ pid2 = fork();
+ ret = vmx_syscall();
+ /* Can't FAIL_IF(pid2 == -1); because we've already forked */
+ if (pid2 == -1) {
+ /*
+ * Couldn't fork, ensure child_ret is set and is a fail
+ */
+ ret = child_ret = 1;
+ } else {
+ if (pid2)
+ waitpid(pid2, &child_ret, 0);
+ else
+ exit(ret);
+ }
+
+ ret |= child_ret;
+
+ if (pid)
+ waitpid(pid, &child_ret, 0);
+ else
+ exit(ret);
+
+ FAIL_IF(ret || child_ret);
+ return 0;
+}
+
+int main(int argc, char *argv[])
+{
+ return test_harness(test_vmx_syscall, "vmx_syscall");
+
+}
diff --git a/tools/testing/selftests/powerpc/tm/tm-signal-msr-resv.c b/tools/testing/selftests/powerpc/tm/tm-signal-msr-resv.c
index d86653f282b1..8c54d18b3e9a 100644
--- a/tools/testing/selftests/powerpc/tm/tm-signal-msr-resv.c
+++ b/tools/testing/selftests/powerpc/tm/tm-signal-msr-resv.c
@@ -40,7 +40,7 @@ void signal_usr1(int signum, siginfo_t *info, void *uc)
#ifdef __powerpc64__
ucp->uc_mcontext.gp_regs[PT_MSR] |= (7ULL << 32);
#else
- ucp->uc_mcontext.regs->gpr[PT_MSR] |= (7ULL);
+ ucp->uc_mcontext.uc_regs->gregs[PT_MSR] |= (7ULL);
#endif
/* Should segv on return becuase of invalid context */
segv_expected = 1;