Update Linux to v5.4.148
Sourced from [1]
[1] https://cdn.kernel.org/pub/linux/kernel/v5.x/linux-5.4.148.tar.gz
Change-Id: Ib3d26c5ba9b022e2e03533005c4fed4d7c30b61b
Signed-off-by: Olivier Deprez <olivier.deprez@arm.com>
diff --git a/tools/testing/selftests/powerpc/alignment/alignment_handler.c b/tools/testing/selftests/powerpc/alignment/alignment_handler.c
index 0453c50..0725239 100644
--- a/tools/testing/selftests/powerpc/alignment/alignment_handler.c
+++ b/tools/testing/selftests/powerpc/alignment/alignment_handler.c
@@ -380,7 +380,6 @@
LOAD_DFORM_TEST(ldu);
LOAD_XFORM_TEST(ldx);
LOAD_XFORM_TEST(ldux);
- LOAD_DFORM_TEST(lmw);
STORE_DFORM_TEST(stb);
STORE_XFORM_TEST(stbx);
STORE_DFORM_TEST(stbu);
@@ -399,7 +398,11 @@
STORE_XFORM_TEST(stdx);
STORE_DFORM_TEST(stdu);
STORE_XFORM_TEST(stdux);
+
+#ifdef __BIG_ENDIAN__
+ LOAD_DFORM_TEST(lmw);
STORE_DFORM_TEST(stmw);
+#endif
return rc;
}
diff --git a/tools/testing/selftests/powerpc/benchmarks/context_switch.c b/tools/testing/selftests/powerpc/benchmarks/context_switch.c
index a2e8c9d..d50cc05 100644
--- a/tools/testing/selftests/powerpc/benchmarks/context_switch.c
+++ b/tools/testing/selftests/powerpc/benchmarks/context_switch.c
@@ -19,6 +19,7 @@
#include <limits.h>
#include <sys/time.h>
#include <sys/syscall.h>
+#include <sys/sysinfo.h>
#include <sys/types.h>
#include <sys/shm.h>
#include <linux/futex.h>
@@ -104,8 +105,9 @@
static void start_process_on(void *(*fn)(void *), void *arg, unsigned long cpu)
{
- int pid;
- cpu_set_t cpuset;
+ int pid, ncpus;
+ cpu_set_t *cpuset;
+ size_t size;
pid = fork();
if (pid == -1) {
@@ -116,14 +118,23 @@
if (pid)
return;
- CPU_ZERO(&cpuset);
- CPU_SET(cpu, &cpuset);
+ ncpus = get_nprocs();
+ size = CPU_ALLOC_SIZE(ncpus);
+ cpuset = CPU_ALLOC(ncpus);
+ if (!cpuset) {
+ perror("malloc");
+ exit(1);
+ }
+ CPU_ZERO_S(size, cpuset);
+ CPU_SET_S(cpu, size, cpuset);
- if (sched_setaffinity(0, sizeof(cpuset), &cpuset)) {
+ if (sched_setaffinity(0, size, cpuset)) {
perror("sched_setaffinity");
+ CPU_FREE(cpuset);
exit(1);
}
+ CPU_FREE(cpuset);
fn(arg);
exit(0);
diff --git a/tools/testing/selftests/powerpc/eeh/eeh-basic.sh b/tools/testing/selftests/powerpc/eeh/eeh-basic.sh
index f988d2f..7c2cb04 100755
--- a/tools/testing/selftests/powerpc/eeh/eeh-basic.sh
+++ b/tools/testing/selftests/powerpc/eeh/eeh-basic.sh
@@ -1,17 +1,19 @@
#!/bin/sh
# SPDX-License-Identifier: GPL-2.0-only
+KSELFTESTS_SKIP=4
+
. ./eeh-functions.sh
if ! eeh_supported ; then
echo "EEH not supported on this system, skipping"
- exit 0;
+ exit $KSELFTESTS_SKIP;
fi
if [ ! -e "/sys/kernel/debug/powerpc/eeh_dev_check" ] && \
[ ! -e "/sys/kernel/debug/powerpc/eeh_dev_break" ] ; then
echo "debugfs EEH testing files are missing. Is debugfs mounted?"
- exit 1;
+ exit $KSELFTESTS_SKIP;
fi
pre_lspci=`mktemp`
@@ -79,4 +81,5 @@
lspci | diff -u $pre_lspci -
rm -f $pre_lspci
-exit $failed
+test "$failed" -eq 0
+exit $?
diff --git a/tools/testing/selftests/powerpc/eeh/eeh-functions.sh b/tools/testing/selftests/powerpc/eeh/eeh-functions.sh
index 26112ab..00dc32c 100755
--- a/tools/testing/selftests/powerpc/eeh/eeh-functions.sh
+++ b/tools/testing/selftests/powerpc/eeh/eeh-functions.sh
@@ -5,12 +5,17 @@
local dev="$1"
local path="/sys/bus/pci/devices/$dev/eeh_pe_state"
- if ! [ -e "$path" ] ; then
+ # if a driver doesn't support the error handling callbacks then the
+ # device is recovered by removing and re-probing it. This causes the
+ # sysfs directory to disappear so read the PE state once and squash
+ # any potential error messages
+ local eeh_state="$(cat $path 2>/dev/null)"
+ if [ -z "$eeh_state" ]; then
return 1;
fi
- local fw_state="$(cut -d' ' -f1 < $path)"
- local sw_state="$(cut -d' ' -f2 < $path)"
+ local fw_state="$(echo $eeh_state | cut -d' ' -f1)"
+ local sw_state="$(echo $eeh_state | cut -d' ' -f2)"
# If EEH_PE_ISOLATED or EEH_PE_RECOVERING are set then the PE is in an
# error state or being recovered. Either way, not ok.
@@ -53,9 +58,13 @@
# is a no-op.
echo $dev >/sys/kernel/debug/powerpc/eeh_dev_check
- # Enforce a 30s timeout for recovery. Even the IPR, which is infamously
- # slow to reset, should recover within 30s.
- max_wait=30
+ # Default to a 60s timeout when waiting for a device to recover. This
+ # is an arbitrary default which can be overridden by setting the
+ # EEH_MAX_WAIT environmental variable when required.
+
+ # The current record holder for longest recovery time is:
+ # "Adaptec Series 8 12G SAS/PCIe 3" at 39 seconds
+ max_wait=${EEH_MAX_WAIT:=60}
for i in `seq 0 ${max_wait}` ; do
if pe_ok $dev ; then
diff --git a/tools/testing/selftests/powerpc/mm/.gitignore b/tools/testing/selftests/powerpc/mm/.gitignore
index 7101ffd..d021172 100644
--- a/tools/testing/selftests/powerpc/mm/.gitignore
+++ b/tools/testing/selftests/powerpc/mm/.gitignore
@@ -5,3 +5,4 @@
segv_errors
wild_bctr
large_vm_fork_separation
+tlbie_test
diff --git a/tools/testing/selftests/powerpc/pmu/ebb/back_to_back_ebbs_test.c b/tools/testing/selftests/powerpc/pmu/ebb/back_to_back_ebbs_test.c
index a2d7b0e..a26ac12 100644
--- a/tools/testing/selftests/powerpc/pmu/ebb/back_to_back_ebbs_test.c
+++ b/tools/testing/selftests/powerpc/pmu/ebb/back_to_back_ebbs_test.c
@@ -91,8 +91,6 @@
ebb_global_disable();
ebb_freeze_pmcs();
- count_pmc(1, sample_period);
-
dump_ebb_state();
event_close(&event);
diff --git a/tools/testing/selftests/powerpc/pmu/ebb/cycles_test.c b/tools/testing/selftests/powerpc/pmu/ebb/cycles_test.c
index bc89381..bb9f587 100644
--- a/tools/testing/selftests/powerpc/pmu/ebb/cycles_test.c
+++ b/tools/testing/selftests/powerpc/pmu/ebb/cycles_test.c
@@ -42,8 +42,6 @@
ebb_global_disable();
ebb_freeze_pmcs();
- count_pmc(1, sample_period);
-
dump_ebb_state();
event_close(&event);
diff --git a/tools/testing/selftests/powerpc/pmu/ebb/cycles_with_freeze_test.c b/tools/testing/selftests/powerpc/pmu/ebb/cycles_with_freeze_test.c
index dcd351d..9ae795c 100644
--- a/tools/testing/selftests/powerpc/pmu/ebb/cycles_with_freeze_test.c
+++ b/tools/testing/selftests/powerpc/pmu/ebb/cycles_with_freeze_test.c
@@ -99,8 +99,6 @@
ebb_global_disable();
ebb_freeze_pmcs();
- count_pmc(1, sample_period);
-
dump_ebb_state();
printf("EBBs while frozen %d\n", ebbs_while_frozen);
diff --git a/tools/testing/selftests/powerpc/pmu/ebb/cycles_with_mmcr2_test.c b/tools/testing/selftests/powerpc/pmu/ebb/cycles_with_mmcr2_test.c
index 94c99c1..4b45a2e 100644
--- a/tools/testing/selftests/powerpc/pmu/ebb/cycles_with_mmcr2_test.c
+++ b/tools/testing/selftests/powerpc/pmu/ebb/cycles_with_mmcr2_test.c
@@ -71,8 +71,6 @@
ebb_global_disable();
ebb_freeze_pmcs();
- count_pmc(1, sample_period);
-
dump_ebb_state();
event_close(&event);
diff --git a/tools/testing/selftests/powerpc/pmu/ebb/ebb.c b/tools/testing/selftests/powerpc/pmu/ebb/ebb.c
index dfbc5c3..21537d6 100644
--- a/tools/testing/selftests/powerpc/pmu/ebb/ebb.c
+++ b/tools/testing/selftests/powerpc/pmu/ebb/ebb.c
@@ -396,8 +396,6 @@
ebb_global_disable();
ebb_freeze_pmcs();
- count_pmc(1, sample_period);
-
dump_ebb_state();
event_close(&event);
diff --git a/tools/testing/selftests/powerpc/pmu/ebb/ebb_on_willing_child_test.c b/tools/testing/selftests/powerpc/pmu/ebb/ebb_on_willing_child_test.c
index ca2f7d7..b208bf6 100644
--- a/tools/testing/selftests/powerpc/pmu/ebb/ebb_on_willing_child_test.c
+++ b/tools/testing/selftests/powerpc/pmu/ebb/ebb_on_willing_child_test.c
@@ -38,8 +38,6 @@
ebb_global_disable();
ebb_freeze_pmcs();
- count_pmc(1, sample_period);
-
dump_ebb_state();
FAIL_IF(ebb_state.stats.ebb_count == 0);
diff --git a/tools/testing/selftests/powerpc/pmu/ebb/lost_exception_test.c b/tools/testing/selftests/powerpc/pmu/ebb/lost_exception_test.c
index ac3e6e1..ba2681a 100644
--- a/tools/testing/selftests/powerpc/pmu/ebb/lost_exception_test.c
+++ b/tools/testing/selftests/powerpc/pmu/ebb/lost_exception_test.c
@@ -75,7 +75,6 @@
ebb_freeze_pmcs();
ebb_global_disable();
- count_pmc(4, sample_period);
mtspr(SPRN_PMC4, 0xdead);
dump_summary_ebb_state();
diff --git a/tools/testing/selftests/powerpc/pmu/ebb/multi_counter_test.c b/tools/testing/selftests/powerpc/pmu/ebb/multi_counter_test.c
index b8242e9..791d37b 100644
--- a/tools/testing/selftests/powerpc/pmu/ebb/multi_counter_test.c
+++ b/tools/testing/selftests/powerpc/pmu/ebb/multi_counter_test.c
@@ -70,13 +70,6 @@
ebb_global_disable();
ebb_freeze_pmcs();
- count_pmc(1, sample_period);
- count_pmc(2, sample_period);
- count_pmc(3, sample_period);
- count_pmc(4, sample_period);
- count_pmc(5, sample_period);
- count_pmc(6, sample_period);
-
dump_ebb_state();
for (i = 0; i < 6; i++)
diff --git a/tools/testing/selftests/powerpc/pmu/ebb/multi_ebb_procs_test.c b/tools/testing/selftests/powerpc/pmu/ebb/multi_ebb_procs_test.c
index a05c0e1..9b0f70d 100644
--- a/tools/testing/selftests/powerpc/pmu/ebb/multi_ebb_procs_test.c
+++ b/tools/testing/selftests/powerpc/pmu/ebb/multi_ebb_procs_test.c
@@ -61,8 +61,6 @@
ebb_global_disable();
ebb_freeze_pmcs();
- count_pmc(1, sample_period);
-
dump_summary_ebb_state();
event_close(&event);
diff --git a/tools/testing/selftests/powerpc/pmu/ebb/no_handler_test.c b/tools/testing/selftests/powerpc/pmu/ebb/no_handler_test.c
index fc5bf48..01e827c 100644
--- a/tools/testing/selftests/powerpc/pmu/ebb/no_handler_test.c
+++ b/tools/testing/selftests/powerpc/pmu/ebb/no_handler_test.c
@@ -50,8 +50,6 @@
event_close(&event);
- dump_ebb_state();
-
/* The real test is that we never took an EBB at 0x0 */
return 0;
diff --git a/tools/testing/selftests/powerpc/pmu/ebb/pmae_handling_test.c b/tools/testing/selftests/powerpc/pmu/ebb/pmae_handling_test.c
index 153ebc9..2904c74 100644
--- a/tools/testing/selftests/powerpc/pmu/ebb/pmae_handling_test.c
+++ b/tools/testing/selftests/powerpc/pmu/ebb/pmae_handling_test.c
@@ -82,8 +82,6 @@
ebb_global_disable();
ebb_freeze_pmcs();
- count_pmc(1, sample_period);
-
dump_ebb_state();
if (mmcr0_mismatch)
diff --git a/tools/testing/selftests/powerpc/pmu/ebb/pmc56_overflow_test.c b/tools/testing/selftests/powerpc/pmu/ebb/pmc56_overflow_test.c
index eadad75..b29f8ba 100644
--- a/tools/testing/selftests/powerpc/pmu/ebb/pmc56_overflow_test.c
+++ b/tools/testing/selftests/powerpc/pmu/ebb/pmc56_overflow_test.c
@@ -76,8 +76,6 @@
ebb_global_disable();
ebb_freeze_pmcs();
- count_pmc(2, sample_period);
-
dump_ebb_state();
printf("PMC5/6 overflow %d\n", pmc56_overflowed);
diff --git a/tools/testing/selftests/powerpc/ptrace/ptrace-pkey.c b/tools/testing/selftests/powerpc/ptrace/ptrace-pkey.c
index bdbbbe8..3694613 100644
--- a/tools/testing/selftests/powerpc/ptrace/ptrace-pkey.c
+++ b/tools/testing/selftests/powerpc/ptrace/ptrace-pkey.c
@@ -44,7 +44,7 @@
unsigned long amr2;
/* AMR value that ptrace should refuse to write to the child. */
- unsigned long amr3;
+ unsigned long invalid_amr;
/* IAMR value the parent expects to read from the child. */
unsigned long expected_iamr;
@@ -57,8 +57,8 @@
* (even though they're valid ones) because userspace doesn't have
* access to those registers.
*/
- unsigned long new_iamr;
- unsigned long new_uamor;
+ unsigned long invalid_iamr;
+ unsigned long invalid_uamor;
};
static int sys_pkey_alloc(unsigned long flags, unsigned long init_access_rights)
@@ -66,11 +66,6 @@
return syscall(__NR_pkey_alloc, flags, init_access_rights);
}
-static int sys_pkey_free(int pkey)
-{
- return syscall(__NR_pkey_free, pkey);
-}
-
static int child(struct shared_info *info)
{
unsigned long reg;
@@ -100,28 +95,32 @@
info->amr1 |= 3ul << pkeyshift(pkey1);
info->amr2 |= 3ul << pkeyshift(pkey2);
- info->amr3 |= info->amr2 | 3ul << pkeyshift(pkey3);
+ /*
+ * invalid amr value where we try to force write
+ * things which are deined by a uamor setting.
+ */
+ info->invalid_amr = info->amr2 | (~0x0UL & ~info->expected_uamor);
+ /*
+ * if PKEY_DISABLE_EXECUTE succeeded we should update the expected_iamr
+ */
if (disable_execute)
info->expected_iamr |= 1ul << pkeyshift(pkey1);
else
info->expected_iamr &= ~(1ul << pkeyshift(pkey1));
- info->expected_iamr &= ~(1ul << pkeyshift(pkey2) | 1ul << pkeyshift(pkey3));
-
- info->expected_uamor |= 3ul << pkeyshift(pkey1) |
- 3ul << pkeyshift(pkey2);
- info->new_iamr |= 1ul << pkeyshift(pkey1) | 1ul << pkeyshift(pkey2);
- info->new_uamor |= 3ul << pkeyshift(pkey1);
+ /*
+ * We allocated pkey2 and pkey 3 above. Clear the IAMR bits.
+ */
+ info->expected_iamr &= ~(1ul << pkeyshift(pkey2));
+ info->expected_iamr &= ~(1ul << pkeyshift(pkey3));
/*
- * We won't use pkey3. We just want a plausible but invalid key to test
- * whether ptrace will let us write to AMR bits we are not supposed to.
- *
- * This also tests whether the kernel restores the UAMOR permissions
- * after a key is freed.
+ * Create an IAMR value different from expected value.
+ * Kernel will reject an IAMR and UAMOR change.
*/
- sys_pkey_free(pkey3);
+ info->invalid_iamr = info->expected_iamr | (1ul << pkeyshift(pkey1) | 1ul << pkeyshift(pkey2));
+ info->invalid_uamor = info->expected_uamor & ~(0x3ul << pkeyshift(pkey1));
printf("%-30s AMR: %016lx pkey1: %d pkey2: %d pkey3: %d\n",
user_write, info->amr1, pkey1, pkey2, pkey3);
@@ -196,9 +195,9 @@
PARENT_SKIP_IF_UNSUPPORTED(ret, &info->child_sync);
PARENT_FAIL_IF(ret, &info->child_sync);
- info->amr1 = info->amr2 = info->amr3 = regs[0];
- info->expected_iamr = info->new_iamr = regs[1];
- info->expected_uamor = info->new_uamor = regs[2];
+ info->amr1 = info->amr2 = regs[0];
+ info->expected_iamr = regs[1];
+ info->expected_uamor = regs[2];
/* Wake up child so that it can set itself up. */
ret = prod_child(&info->child_sync);
@@ -234,10 +233,10 @@
return ret;
/* Write invalid AMR value in child. */
- ret = ptrace_write_regs(pid, NT_PPC_PKEY, &info->amr3, 1);
+ ret = ptrace_write_regs(pid, NT_PPC_PKEY, &info->invalid_amr, 1);
PARENT_FAIL_IF(ret, &info->child_sync);
- printf("%-30s AMR: %016lx\n", ptrace_write_running, info->amr3);
+ printf("%-30s AMR: %016lx\n", ptrace_write_running, info->invalid_amr);
/* Wake up child so that it can verify it didn't change. */
ret = prod_child(&info->child_sync);
@@ -249,7 +248,7 @@
/* Try to write to IAMR. */
regs[0] = info->amr1;
- regs[1] = info->new_iamr;
+ regs[1] = info->invalid_iamr;
ret = ptrace_write_regs(pid, NT_PPC_PKEY, regs, 2);
PARENT_FAIL_IF(!ret, &info->child_sync);
@@ -257,7 +256,7 @@
ptrace_write_running, regs[0], regs[1]);
/* Try to write to IAMR and UAMOR. */
- regs[2] = info->new_uamor;
+ regs[2] = info->invalid_uamor;
ret = ptrace_write_regs(pid, NT_PPC_PKEY, regs, 3);
PARENT_FAIL_IF(!ret, &info->child_sync);
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 25e23e7..2ecfa11 100644
--- a/tools/testing/selftests/powerpc/ptrace/ptrace-tm-spd-tar.c
+++ b/tools/testing/selftests/powerpc/ptrace/ptrace-tm-spd-tar.c
@@ -73,7 +73,7 @@
[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),
[tar_3]"i"(TAR_3), [dscr_3]"i"(DSCR_3)
- : "memory", "r0", "r1", "r3", "r4", "r5", "r6"
+ : "memory", "r0", "r3", "r4", "r5", "r6", "lr"
);
/* TM failed, analyse */
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 f603fe5..6f7fb51 100644
--- a/tools/testing/selftests/powerpc/ptrace/ptrace-tm-spd-vsx.c
+++ b/tools/testing/selftests/powerpc/ptrace/ptrace-tm-spd-vsx.c
@@ -74,8 +74,8 @@
"3: ;"
: [res] "=r" (result), [texasr] "=r" (texasr)
: [sprn_texasr] "i" (SPRN_TEXASR)
- : "memory", "r0", "r1", "r3", "r4",
- "r7", "r8", "r9", "r10", "r11"
+ : "memory", "r0", "r3", "r4",
+ "r7", "r8", "r9", "r10", "r11", "lr"
);
if (result) {
diff --git a/tools/testing/selftests/powerpc/ptrace/ptrace-tm-tar.c b/tools/testing/selftests/powerpc/ptrace/ptrace-tm-tar.c
index e0d37f0..46ef378 100644
--- a/tools/testing/selftests/powerpc/ptrace/ptrace-tm-tar.c
+++ b/tools/testing/selftests/powerpc/ptrace/ptrace-tm-tar.c
@@ -62,7 +62,7 @@
[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] "b" (&cptr[1])
- : "memory", "r0", "r1", "r3", "r4", "r5", "r6"
+ : "memory", "r0", "r3", "r4", "r5", "r6"
);
/* TM failed, analyse */
diff --git a/tools/testing/selftests/powerpc/ptrace/ptrace-tm-vsx.c b/tools/testing/selftests/powerpc/ptrace/ptrace-tm-vsx.c
index 8027457..70ca012 100644
--- a/tools/testing/selftests/powerpc/ptrace/ptrace-tm-vsx.c
+++ b/tools/testing/selftests/powerpc/ptrace/ptrace-tm-vsx.c
@@ -62,8 +62,8 @@
"3: ;"
: [res] "=r" (result), [texasr] "=r" (texasr)
: [sprn_texasr] "i" (SPRN_TEXASR), [cptr1] "b" (&cptr[1])
- : "memory", "r0", "r1", "r3", "r4",
- "r7", "r8", "r9", "r10", "r11"
+ : "memory", "r0", "r3", "r4",
+ "r7", "r8", "r9", "r10", "r11", "lr"
);
if (result) {
diff --git a/tools/testing/selftests/powerpc/security/.gitignore b/tools/testing/selftests/powerpc/security/.gitignore
index 0b969fb..b8afb4f 100644
--- a/tools/testing/selftests/powerpc/security/.gitignore
+++ b/tools/testing/selftests/powerpc/security/.gitignore
@@ -1 +1,2 @@
rfi_flush
+entry_flush
diff --git a/tools/testing/selftests/powerpc/security/Makefile b/tools/testing/selftests/powerpc/security/Makefile
index 85861c4..e550a28 100644
--- a/tools/testing/selftests/powerpc/security/Makefile
+++ b/tools/testing/selftests/powerpc/security/Makefile
@@ -1,6 +1,6 @@
# SPDX-License-Identifier: GPL-2.0+
-TEST_GEN_PROGS := rfi_flush
+TEST_GEN_PROGS := rfi_flush entry_flush
top_srcdir = ../../../../..
CFLAGS += -I../../../../../usr/include
diff --git a/tools/testing/selftests/powerpc/security/entry_flush.c b/tools/testing/selftests/powerpc/security/entry_flush.c
new file mode 100644
index 0000000..e8d24f9
--- /dev/null
+++ b/tools/testing/selftests/powerpc/security/entry_flush.c
@@ -0,0 +1,163 @@
+// SPDX-License-Identifier: GPL-2.0+
+
+/*
+ * Copyright 2018 IBM Corporation.
+ */
+
+#define __SANE_USERSPACE_TYPES__
+
+#include <sys/types.h>
+#include <stdint.h>
+#include <malloc.h>
+#include <unistd.h>
+#include <signal.h>
+#include <stdlib.h>
+#include <string.h>
+#include <stdio.h>
+#include "utils.h"
+
+#define CACHELINE_SIZE 128
+
+struct perf_event_read {
+ __u64 nr;
+ __u64 l1d_misses;
+};
+
+static inline __u64 load(void *addr)
+{
+ __u64 tmp;
+
+ asm volatile("ld %0,0(%1)" : "=r"(tmp) : "b"(addr));
+
+ return tmp;
+}
+
+static void syscall_loop(char *p, unsigned long iterations,
+ unsigned long zero_size)
+{
+ for (unsigned long i = 0; i < iterations; i++) {
+ for (unsigned long j = 0; j < zero_size; j += CACHELINE_SIZE)
+ load(p + j);
+ getppid();
+ }
+}
+
+int entry_flush_test(void)
+{
+ char *p;
+ int repetitions = 10;
+ int fd, passes = 0, iter, rc = 0;
+ struct perf_event_read v;
+ __u64 l1d_misses_total = 0;
+ unsigned long iterations = 100000, zero_size = 24 * 1024;
+ unsigned long l1d_misses_expected;
+ int rfi_flush_orig;
+ int entry_flush, entry_flush_orig;
+
+ SKIP_IF(geteuid() != 0);
+
+ // The PMU event we use only works on Power7 or later
+ SKIP_IF(!have_hwcap(PPC_FEATURE_ARCH_2_06));
+
+ if (read_debugfs_file("powerpc/rfi_flush", &rfi_flush_orig) < 0) {
+ perror("Unable to read powerpc/rfi_flush debugfs file");
+ SKIP_IF(1);
+ }
+
+ if (read_debugfs_file("powerpc/entry_flush", &entry_flush_orig) < 0) {
+ perror("Unable to read powerpc/entry_flush debugfs file");
+ SKIP_IF(1);
+ }
+
+ if (rfi_flush_orig != 0) {
+ if (write_debugfs_file("powerpc/rfi_flush", 0) < 0) {
+ perror("error writing to powerpc/rfi_flush debugfs file");
+ FAIL_IF(1);
+ }
+ }
+
+ entry_flush = entry_flush_orig;
+
+ fd = perf_event_open_counter(PERF_TYPE_RAW, /* L1d miss */ 0x400f0, -1);
+ FAIL_IF(fd < 0);
+
+ p = (char *)memalign(zero_size, CACHELINE_SIZE);
+
+ FAIL_IF(perf_event_enable(fd));
+
+ // disable L1 prefetching
+ set_dscr(1);
+
+ iter = repetitions;
+
+ /*
+ * We expect to see l1d miss for each cacheline access when entry_flush
+ * is set. Allow a small variation on this.
+ */
+ l1d_misses_expected = iterations * (zero_size / CACHELINE_SIZE - 2);
+
+again:
+ FAIL_IF(perf_event_reset(fd));
+
+ syscall_loop(p, iterations, zero_size);
+
+ FAIL_IF(read(fd, &v, sizeof(v)) != sizeof(v));
+
+ if (entry_flush && v.l1d_misses >= l1d_misses_expected)
+ passes++;
+ else if (!entry_flush && v.l1d_misses < (l1d_misses_expected / 2))
+ passes++;
+
+ l1d_misses_total += v.l1d_misses;
+
+ while (--iter)
+ goto again;
+
+ if (passes < repetitions) {
+ printf("FAIL (L1D misses with entry_flush=%d: %llu %c %lu) [%d/%d failures]\n",
+ entry_flush, l1d_misses_total, entry_flush ? '<' : '>',
+ entry_flush ? repetitions * l1d_misses_expected :
+ repetitions * l1d_misses_expected / 2,
+ repetitions - passes, repetitions);
+ rc = 1;
+ } else
+ printf("PASS (L1D misses with entry_flush=%d: %llu %c %lu) [%d/%d pass]\n",
+ entry_flush, l1d_misses_total, entry_flush ? '>' : '<',
+ entry_flush ? repetitions * l1d_misses_expected :
+ repetitions * l1d_misses_expected / 2,
+ passes, repetitions);
+
+ if (entry_flush == entry_flush_orig) {
+ entry_flush = !entry_flush_orig;
+ if (write_debugfs_file("powerpc/entry_flush", entry_flush) < 0) {
+ perror("error writing to powerpc/entry_flush debugfs file");
+ return 1;
+ }
+ iter = repetitions;
+ l1d_misses_total = 0;
+ passes = 0;
+ goto again;
+ }
+
+ perf_event_disable(fd);
+ close(fd);
+
+ set_dscr(0);
+
+ if (write_debugfs_file("powerpc/rfi_flush", rfi_flush_orig) < 0) {
+ perror("unable to restore original value of powerpc/rfi_flush debugfs file");
+ return 1;
+ }
+
+ if (write_debugfs_file("powerpc/entry_flush", entry_flush_orig) < 0) {
+ perror("unable to restore original value of powerpc/entry_flush debugfs file");
+ return 1;
+ }
+
+ return rc;
+}
+
+int main(int argc, char *argv[])
+{
+ return test_harness(entry_flush_test, "entry_flush_test");
+}
diff --git a/tools/testing/selftests/powerpc/security/rfi_flush.c b/tools/testing/selftests/powerpc/security/rfi_flush.c
index 0a7d0af..533315e 100644
--- a/tools/testing/selftests/powerpc/security/rfi_flush.c
+++ b/tools/testing/selftests/powerpc/security/rfi_flush.c
@@ -50,16 +50,30 @@
__u64 l1d_misses_total = 0;
unsigned long iterations = 100000, zero_size = 24 * 1024;
unsigned long l1d_misses_expected;
- int rfi_flush_org, rfi_flush;
+ int rfi_flush_orig, rfi_flush;
+ int have_entry_flush, entry_flush_orig;
SKIP_IF(geteuid() != 0);
- if (read_debugfs_file("powerpc/rfi_flush", &rfi_flush_org)) {
+ if (read_debugfs_file("powerpc/rfi_flush", &rfi_flush_orig) < 0) {
perror("Unable to read powerpc/rfi_flush debugfs file");
SKIP_IF(1);
}
- rfi_flush = rfi_flush_org;
+ if (read_debugfs_file("powerpc/entry_flush", &entry_flush_orig) < 0) {
+ have_entry_flush = 0;
+ } else {
+ have_entry_flush = 1;
+
+ if (entry_flush_orig != 0) {
+ if (write_debugfs_file("powerpc/entry_flush", 0) < 0) {
+ perror("error writing to powerpc/entry_flush debugfs file");
+ return 1;
+ }
+ }
+ }
+
+ rfi_flush = rfi_flush_orig;
fd = perf_event_open_counter(PERF_TYPE_RAW, /* L1d miss */ 0x400f0, -1);
FAIL_IF(fd < 0);
@@ -68,6 +82,7 @@
FAIL_IF(perf_event_enable(fd));
+ // disable L1 prefetching
set_dscr(1);
iter = repetitions;
@@ -109,8 +124,8 @@
repetitions * l1d_misses_expected / 2,
passes, repetitions);
- if (rfi_flush == rfi_flush_org) {
- rfi_flush = !rfi_flush_org;
+ if (rfi_flush == rfi_flush_orig) {
+ rfi_flush = !rfi_flush_orig;
if (write_debugfs_file("powerpc/rfi_flush", rfi_flush) < 0) {
perror("error writing to powerpc/rfi_flush debugfs file");
return 1;
@@ -126,11 +141,19 @@
set_dscr(0);
- if (write_debugfs_file("powerpc/rfi_flush", rfi_flush_org) < 0) {
+ if (write_debugfs_file("powerpc/rfi_flush", rfi_flush_orig) < 0) {
perror("unable to restore original value of powerpc/rfi_flush debugfs file");
return 1;
}
+ if (have_entry_flush) {
+ if (write_debugfs_file("powerpc/entry_flush", entry_flush_orig) < 0) {
+ perror("unable to restore original value of powerpc/entry_flush "
+ "debugfs file");
+ return 1;
+ }
+ }
+
return rc;
}
diff --git a/tools/testing/selftests/powerpc/tm/tm-signal-sigreturn-nt.c b/tools/testing/selftests/powerpc/tm/tm-signal-sigreturn-nt.c
index 56fbf9f..07c3881 100644
--- a/tools/testing/selftests/powerpc/tm/tm-signal-sigreturn-nt.c
+++ b/tools/testing/selftests/powerpc/tm/tm-signal-sigreturn-nt.c
@@ -10,10 +10,12 @@
*/
#define _GNU_SOURCE
+#include <stdio.h>
#include <stdlib.h>
#include <signal.h>
#include "utils.h"
+#include "tm.h"
void trap_signal_handler(int signo, siginfo_t *si, void *uc)
{
@@ -29,6 +31,8 @@
{
struct sigaction trap_sa;
+ SKIP_IF(!have_htm());
+
trap_sa.sa_flags = SA_SIGINFO;
trap_sa.sa_sigaction = trap_signal_handler;
diff --git a/tools/testing/selftests/powerpc/utils.c b/tools/testing/selftests/powerpc/utils.c
index c02d248..176102e 100644
--- a/tools/testing/selftests/powerpc/utils.c
+++ b/tools/testing/selftests/powerpc/utils.c
@@ -16,6 +16,7 @@
#include <string.h>
#include <sys/ioctl.h>
#include <sys/stat.h>
+#include <sys/sysinfo.h>
#include <sys/types.h>
#include <sys/utsname.h>
#include <unistd.h>
@@ -88,28 +89,40 @@
int pick_online_cpu(void)
{
- cpu_set_t mask;
- int cpu;
+ int ncpus, cpu = -1;
+ cpu_set_t *mask;
+ size_t size;
- CPU_ZERO(&mask);
-
- if (sched_getaffinity(0, sizeof(mask), &mask)) {
- perror("sched_getaffinity");
+ ncpus = get_nprocs_conf();
+ size = CPU_ALLOC_SIZE(ncpus);
+ mask = CPU_ALLOC(ncpus);
+ if (!mask) {
+ perror("malloc");
return -1;
}
+ CPU_ZERO_S(size, mask);
+
+ if (sched_getaffinity(0, size, mask)) {
+ perror("sched_getaffinity");
+ goto done;
+ }
+
/* We prefer a primary thread, but skip 0 */
- for (cpu = 8; cpu < CPU_SETSIZE; cpu += 8)
- if (CPU_ISSET(cpu, &mask))
- return cpu;
+ for (cpu = 8; cpu < ncpus; cpu += 8)
+ if (CPU_ISSET_S(cpu, size, mask))
+ goto done;
/* Search for anything, but in reverse */
- for (cpu = CPU_SETSIZE - 1; cpu >= 0; cpu--)
- if (CPU_ISSET(cpu, &mask))
- return cpu;
+ for (cpu = ncpus - 1; cpu >= 0; cpu--)
+ if (CPU_ISSET_S(cpu, size, mask))
+ goto done;
printf("No cpus in affinity mask?!\n");
- return -1;
+
+done:
+ CPU_FREE(mask);
+ return cpu;
}
bool is_ppc64le(void)