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[GIT PULL] Kselftest update for Linux 5.3-rc4

by Shuah Khan

Hi Linus, Please pull the following Kselftest fixes update for Linux 5.3-rc4. This Kselftest update for Linux 5.3-rc4 consists of fix to Kselftest framework to save and restore errno and a fix to livepatch to push and pop dynamic debug config. diff is attached. thanks, -- Shuah ---------------------------------------------------------------- The following changes since commit 527d37e9e575bc0e9024de9b499385e7bb31f1ad: selftests/livepatch: add test skip handling (2019-07-24 14:17:46 -0600) are available in the Git repository at: git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest tags/linux-kselftest-5.3-rc4 for you to fetch changes up to fbb01c52471c8fb4ec2422c0ab26c134bd90bbff: selftests/livepatch: push and pop dynamic debug config (2019-07-30 15:47:10 -0600) ---------------------------------------------------------------- linux-kselftest-5.3-rc4 This Kselftest update for Linux 5.3-rc4 consists of fix to Kselftest framework to save and restore errno and a fix to livepatch to push and pop dynamic debug config. ---------------------------------------------------------------- Aleksa Sarai (1): kselftest: save-and-restore errno to allow for %m formatting Joe Lawrence (1): selftests/livepatch: push and pop dynamic debug config tools/testing/selftests/kselftest.h | 15 +++++++++++++++ tools/testing/selftests/livepatch/functions.sh | 26 ++++++++++++++++++++------ 2 files changed, 35 insertions(+), 6 deletions(-) ----------------------------------------------------------------

5 years, 8 months

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[PATCH]][next] selftests: nettest: fix spelling mistake: "potocol" -> "protocol"

by Colin King

From: Colin Ian King <colin.king(a)canonical.com> There is a spelling mistake in an error messgae. Fix it. Signed-off-by: Colin Ian King <colin.king(a)canonical.com> --- tools/testing/selftests/net/nettest.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/tools/testing/selftests/net/nettest.c b/tools/testing/selftests/net/nettest.c index 9278f8460d75..83515e5ea4dc 100644 --- a/tools/testing/selftests/net/nettest.c +++ b/tools/testing/selftests/net/nettest.c @@ -1627,7 +1627,7 @@ int main(int argc, char *argv[]) args.protocol = pe->p_proto; } else { if (str_to_uint(optarg, 0, 0xffff, &tmp) != 0) { - fprintf(stderr, "Invalid potocol\n"); + fprintf(stderr, "Invalid protocol\n"); return 1; } args.protocol = tmp; -- 2.20.1

5 years, 8 months

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[PATCH] KVM: selftests: Update gitignore file for latest changes

by Thomas Huth

The kvm_create_max_vcpus test has been moved to the main directory, and sync_regs_test is now available on s390x, too. Signed-off-by: Thomas Huth <thuth(a)redhat.com> --- tools/testing/selftests/kvm/.gitignore | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/tools/testing/selftests/kvm/.gitignore b/tools/testing/selftests/kvm/.gitignore index 41266af0d3dc..b35da375530a 100644 --- a/tools/testing/selftests/kvm/.gitignore +++ b/tools/testing/selftests/kvm/.gitignore @@ -1,7 +1,7 @@ +/s390x/sync_regs_test /x86_64/cr4_cpuid_sync_test /x86_64/evmcs_test /x86_64/hyperv_cpuid -/x86_64/kvm_create_max_vcpus /x86_64/mmio_warning_test /x86_64/platform_info_test /x86_64/set_sregs_test @@ -13,3 +13,4 @@ /x86_64/vmx_tsc_adjust_test /clear_dirty_log_test /dirty_log_test +/kvm_create_max_vcpus -- 2.21.0

5 years, 8 months

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[PATCH v3 0/3] KVM: selftests: Enable ucall and dirty_log_test on s390x

by Thomas Huth

Implement the ucall() interface on s390x to be able to use the dirty_log_test KVM selftest on s390x, too. v3: - Fix compilation issue on aarch64 (thanks to Andrew for testing it!) - Added Reviewed-bys v2: - Split up ucall.c into architecture specific files - Removed some #ifdef __s390x__ in the dirty_log patch Thomas Huth (3): KVM: selftests: Split ucall.c into architecture specific files KVM: selftests: Implement ucall() for s390x KVM: selftests: Enable dirty_log_test on s390x tools/testing/selftests/kvm/Makefile | 9 +- tools/testing/selftests/kvm/dirty_log_test.c | 61 ++++++- .../testing/selftests/kvm/include/kvm_util.h | 8 +- .../testing/selftests/kvm/lib/aarch64/ucall.c | 112 +++++++++++++ tools/testing/selftests/kvm/lib/s390x/ucall.c | 56 +++++++ tools/testing/selftests/kvm/lib/ucall.c | 157 ------------------ .../testing/selftests/kvm/lib/x86_64/ucall.c | 56 +++++++ .../selftests/kvm/s390x/sync_regs_test.c | 6 +- 8 files changed, 287 insertions(+), 178 deletions(-) create mode 100644 tools/testing/selftests/kvm/lib/aarch64/ucall.c create mode 100644 tools/testing/selftests/kvm/lib/s390x/ucall.c delete mode 100644 tools/testing/selftests/kvm/lib/ucall.c create mode 100644 tools/testing/selftests/kvm/lib/x86_64/ucall.c -- 2.21.0

5 years, 8 months

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[PATCH v2 0/3] KVM: selftests: Enable ucall and dirty_log_test on s390x

by Thomas Huth

Implement the ucall() interface on s390x to be able to use the dirty_log_test KVM selftest on s390x, too. v2: - Split up ucall.c into architecture specific files - Removed some #ifdef __s390x__ in the dirty_log patch Thomas Huth (3): KVM: selftests: Split ucall.c into architecture specific files KVM: selftests: Implement ucall() for s390x KVM: selftests: Enable dirty_log_test on s390x tools/testing/selftests/kvm/Makefile | 9 +- tools/testing/selftests/kvm/dirty_log_test.c | 61 ++++++- .../testing/selftests/kvm/include/kvm_util.h | 8 +- .../testing/selftests/kvm/lib/aarch64/ucall.c | 112 +++++++++++++ tools/testing/selftests/kvm/lib/s390x/ucall.c | 56 +++++++ tools/testing/selftests/kvm/lib/ucall.c | 157 ------------------ .../testing/selftests/kvm/lib/x86_64/ucall.c | 56 +++++++ .../selftests/kvm/s390x/sync_regs_test.c | 6 +- 8 files changed, 287 insertions(+), 178 deletions(-) create mode 100644 tools/testing/selftests/kvm/lib/aarch64/ucall.c create mode 100644 tools/testing/selftests/kvm/lib/s390x/ucall.c delete mode 100644 tools/testing/selftests/kvm/lib/ucall.c create mode 100644 tools/testing/selftests/kvm/lib/x86_64/ucall.c -- 2.21.0

5 years, 9 months

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[PATCH] selftests: kvm: Adding config fragments

by Naresh Kamboju

selftests kvm test cases need pre-required kernel configs for the test to get pass. Signed-off-by: Naresh Kamboju <naresh.kamboju(a)linaro.org> --- tools/testing/selftests/kvm/config | 26 ++++++++++++++++++++++++++ 1 file changed, 26 insertions(+) create mode 100644 tools/testing/selftests/kvm/config diff --git a/tools/testing/selftests/kvm/config b/tools/testing/selftests/kvm/config new file mode 100644 index 000000000000..3b1cbd726af6 --- /dev/null +++ b/tools/testing/selftests/kvm/config @@ -0,0 +1,26 @@ +CONFIG_ARCH_ENABLE_THP_MIGRATION=y +CONFIG_HAVE_KVM_IRQCHIP=y +CONFIG_HAVE_KVM_IRQFD=y +CONFIG_HAVE_KVM_IRQ_ROUTING=y +CONFIG_HAVE_KVM_EVENTFD=y +CONFIG_KVM_MMIO=y +CONFIG_KVM_ASYNC_PF=y +CONFIG_HAVE_KVM_MSI=y +CONFIG_HAVE_KVM_CPU_RELAX_INTERCEPT=y +CONFIG_KVM_VFIO=y +CONFIG_KVM_GENERIC_DIRTYLOG_READ_PROTECT=y +CONFIG_KVM_COMPAT=y +CONFIG_HAVE_KVM_IRQ_BYPASS=y +CONFIG_HAVE_KVM_NO_POLL=y +CONFIG_KVM=y +CONFIG_VHOST_NET=y +CONFIG_VHOST=y +CONFIG_VHOST_CROSS_ENDIAN_LEGACY=y +CONFIG_USER_RETURN_NOTIFIER=y +CONFIG_PREEMPT_NOTIFIERS=y +CONFIG_TRANSPARENT_HUGEPAGE=y +CONFIG_TRANSPARENT_HUGEPAGE_MADVISE=y +CONFIG_THP_SWAP=y +CONFIG_TRANSPARENT_HUGE_PAGECACHE=y +CONFIG_IRQ_BYPASS_MANAGER=y +CONFIG_XARRAY_MULTI=y -- 2.17.1

5 years, 9 months

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[PATCH 0/2] KVM: selftests: Enable ucall and dirty_log_test on s390x

by Thomas Huth

Implement the ucall() interface on s390x to be able to use the dirty_log_test KVM selftest on s390x, too. Thomas Huth (2): KVM: selftests: Implement ucall() for s390x KVM: selftests: Enable dirty_log_test on s390x tools/testing/selftests/kvm/Makefile | 1 + tools/testing/selftests/kvm/dirty_log_test.c | 70 +++++++++++++++++-- .../testing/selftests/kvm/include/kvm_util.h | 2 +- tools/testing/selftests/kvm/lib/ucall.c | 34 +++++++-- .../selftests/kvm/s390x/sync_regs_test.c | 6 +- 5 files changed, 98 insertions(+), 15 deletions(-) -- 2.21.0

5 years, 9 months

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[PATCH] selftests/livepatch: push and pop dynamic debug config

by Joe Lawrence

The livepatching self-tests tweak the dynamic debug config to verify the kernel log during the tests. Enhance set_dynamic_debug() so that the config changes are restored when the script exits. Note this functionality needs to keep in sync with: - dynamic_debug input/output formatting - functions affected by set_dynamic_debug() For example, push_dynamic_debug() transforms: kernel/livepatch/transition.c:530 [livepatch]klp_init_transition =_ "'%s': initializing %s transition\012" to: file kernel/livepatch/transition.c line 530 =_ Signed-off-by: Joe Lawrence <joe.lawrence(a)redhat.com> --- .../testing/selftests/livepatch/functions.sh | 26 ++++++++++++++----- 1 file changed, 20 insertions(+), 6 deletions(-) diff --git a/tools/testing/selftests/livepatch/functions.sh b/tools/testing/selftests/livepatch/functions.sh index de5a504ffdbc..860f27665ebd 100644 --- a/tools/testing/selftests/livepatch/functions.sh +++ b/tools/testing/selftests/livepatch/functions.sh @@ -29,13 +29,27 @@ function die() { exit 1 } -# set_dynamic_debug() - setup kernel dynamic debug -# TODO - push and pop this config? +function push_dynamic_debug() { + DYNAMIC_DEBUG=$(grep '^kernel/livepatch' /sys/kernel/debug/dynamic_debug/control | \ + awk -F'[: ]' '{print "file " $1 " line " $2 " " $4}') +} + +function pop_dynamic_debug() { + if [[ -n "$DYNAMIC_DEBUG" ]]; then + echo -n "$DYNAMIC_DEBUG" > /sys/kernel/debug/dynamic_debug/control + fi +} + +# set_dynamic_debug() - save the current dynamic debug config and tweak +# it for the self-tests. Set a script exit trap +# that restores the original config. function set_dynamic_debug() { - cat << EOF > /sys/kernel/debug/dynamic_debug/control -file kernel/livepatch/* +p -func klp_try_switch_task -p -EOF + push_dynamic_debug + trap pop_dynamic_debug EXIT INT TERM HUP + cat <<-EOF > /sys/kernel/debug/dynamic_debug/control + file kernel/livepatch/* +p + func klp_try_switch_task -p + EOF } # loop_until(cmd) - loop a command until it is successful or $MAX_RETRIES, -- 2.21.0

5 years, 9 months

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[GIT PULL] Kselftest update for Linux 5.3-rc3

by Shuah Khan

Hi Linus, Please pull the following Kselftest fixes update for Linux 5.3-rc3. This Kselftest update for Linux 5.3-rc3 consists of minor fixes to tests and one major fix to livepatch test to add skip handling to avoid false fail reports when livepatch is disabled. diff is attached. thanks, -- Shuah ---------------------------------------------------------------- The following changes since commit 5f9e832c137075045d15cd6899ab0505cfb2ca4b: Linus 5.3-rc1 (2019-07-21 14:05:38 -0700) are available in the Git repository at: git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest tags/linux-kselftest-5.3-rc3 for you to fetch changes up to 527d37e9e575bc0e9024de9b499385e7bb31f1ad: selftests/livepatch: add test skip handling (2019-07-24 14:17:46 -0600) ---------------------------------------------------------------- linux-kselftest-5.3-rc3 This Kselftest update for Linux 5.3-rc3 consists of minor fixes to tests and one major fix to livepatch test to add skip handling to avoid false fail reports when livepatch is disabled. ---------------------------------------------------------------- Colin Ian King (1): selftests/x86: fix spelling mistake "FAILT" -> "FAIL" Joe Lawrence (1): selftests/livepatch: add test skip handling Masanari Iida (2): selftests: kmod: Fix typo in kmod.sh selftests: mlxsw: Fix typo in qos_mc_aware.sh .../selftests/drivers/net/mlxsw/qos_mc_aware.sh | 4 ++-- tools/testing/selftests/kmod/kmod.sh | 6 +++--- tools/testing/selftests/livepatch/functions.sh | 20 ++++++++++++++++++++ tools/testing/selftests/x86/test_vsyscall.c | 2 +- 4 files changed, 26 insertions(+), 6 deletions(-) ----------------------------------------------------------------

5 years, 9 months

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[PATCH 5.2 121/215] rseq/selftests: Fix Thumb mode build failure on arm32

by Greg Kroah-Hartman

[ Upstream commit ee8a84c60bcc1f1615bd9cb3edfe501e26cdc85b ] Using ".arm .inst" for the arm signature introduces build issues for programs compiled in Thumb mode because the assembler stays in the arm mode for the rest of the inline assembly. Revert to using a ".word" to express the signature as data instead. The choice of signature is a valid trap instruction on arm32 little endian, where both code and data are little endian. ARMv6+ big endian (BE8) generates mixed endianness code vs data: little-endian code and big-endian data. The data value of the signature needs to have its byte order reversed to generate the trap instruction. Prior to ARMv6, -mbig-endian generates big-endian code and data (which match), so the endianness of the data representation of the signature should not be reversed. However, the choice between BE32 and BE8 is done by the linker, so we cannot know whether code and data endianness will be mixed before the linker is invoked. So rather than try to play tricks with the linker, the rseq signature is simply data (not a trap instruction) prior to ARMv6 on big endian. This is why the signature is expressed as data (.word) rather than as instruction (.inst) in assembler. Because a ".word" is used to emit the signature, it will be interpreted as a literal pool by a disassembler, not as an actual instruction. Considering that the signature is not meant to be executed except in scenarios where the program execution is completely bogus, this should not be an issue. Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers(a)efficios.com> Acked-by: Will Deacon <will.deacon(a)arm.com> CC: Peter Zijlstra <peterz(a)infradead.org> CC: Thomas Gleixner <tglx(a)linutronix.de> CC: Joel Fernandes <joelaf(a)google.com> CC: Catalin Marinas <catalin.marinas(a)arm.com> CC: Dave Watson <davejwatson(a)fb.com> CC: Will Deacon <will.deacon(a)arm.com> CC: Shuah Khan <shuah(a)kernel.org> CC: Andi Kleen <andi(a)firstfloor.org> CC: linux-kselftest(a)vger.kernel.org CC: "H . Peter Anvin" <hpa(a)zytor.com> CC: Chris Lameter <cl(a)linux.com> CC: Russell King <linux(a)arm.linux.org.uk> CC: Michael Kerrisk <mtk.manpages(a)gmail.com> CC: "Paul E . McKenney" <paulmck(a)linux.vnet.ibm.com> CC: Paul Turner <pjt(a)google.com> CC: Boqun Feng <boqun.feng(a)gmail.com> CC: Josh Triplett <josh(a)joshtriplett.org> CC: Steven Rostedt <rostedt(a)goodmis.org> CC: Ben Maurer <bmaurer(a)fb.com> CC: linux-api(a)vger.kernel.org CC: Andy Lutomirski <luto(a)amacapital.net> CC: Andrew Morton <akpm(a)linux-foundation.org> CC: Linus Torvalds <torvalds(a)linux-foundation.org> CC: Carlos O'Donell <carlos(a)redhat.com> CC: Florian Weimer <fweimer(a)redhat.com> Signed-off-by: Shuah Khan <skhan(a)linuxfoundation.org> Signed-off-by: Sasha Levin <sashal(a)kernel.org> --- tools/testing/selftests/rseq/rseq-arm.h | 61 +++++++++++++------------ 1 file changed, 33 insertions(+), 28 deletions(-) diff --git a/tools/testing/selftests/rseq/rseq-arm.h b/tools/testing/selftests/rseq/rseq-arm.h index 84f28f147fb6..5943c816c07c 100644 --- a/tools/testing/selftests/rseq/rseq-arm.h +++ b/tools/testing/selftests/rseq/rseq-arm.h @@ -6,6 +6,8 @@ */ /* + * - ARM little endian + * * RSEQ_SIG uses the udf A32 instruction with an uncommon immediate operand * value 0x5de3. This traps if user-space reaches this instruction by mistake, * and the uncommon operand ensures the kernel does not move the instruction @@ -22,36 +24,40 @@ * def3 udf #243 ; 0xf3 * e7f5 b.n <7f5> * - * pre-ARMv6 big endian code: - * e7f5 b.n <7f5> - * def3 udf #243 ; 0xf3 + * - ARMv6+ big endian (BE8): * * ARMv6+ -mbig-endian generates mixed endianness code vs data: little-endian - * code and big-endian data. Ensure the RSEQ_SIG data signature matches code - * endianness. Prior to ARMv6, -mbig-endian generates big-endian code and data - * (which match), so there is no need to reverse the endianness of the data - * representation of the signature. However, the choice between BE32 and BE8 - * is done by the linker, so we cannot know whether code and data endianness - * will be mixed before the linker is invoked. + * code and big-endian data. The data value of the signature needs to have its + * byte order reversed to generate the trap instruction: + * + * Data: 0xf3def5e7 + * + * Translates to this A32 instruction pattern: + * + * e7f5def3 udf #24035 ; 0x5de3 + * + * Translates to this T16 instruction pattern: + * + * def3 udf #243 ; 0xf3 + * e7f5 b.n <7f5> + * + * - Prior to ARMv6 big endian (BE32): + * + * Prior to ARMv6, -mbig-endian generates big-endian code and data + * (which match), so the endianness of the data representation of the + * signature should not be reversed. However, the choice between BE32 + * and BE8 is done by the linker, so we cannot know whether code and + * data endianness will be mixed before the linker is invoked. So rather + * than try to play tricks with the linker, the rseq signature is simply + * data (not a trap instruction) prior to ARMv6 on big endian. This is + * why the signature is expressed as data (.word) rather than as + * instruction (.inst) in assembler. */ -#define RSEQ_SIG_CODE 0xe7f5def3 - -#ifndef __ASSEMBLER__ - -#define RSEQ_SIG_DATA \ - ({ \ - int sig; \ - asm volatile ("b 2f\n\t" \ - "1: .inst " __rseq_str(RSEQ_SIG_CODE) "\n\t" \ - "2:\n\t" \ - "ldr %[sig], 1b\n\t" \ - : [sig] "=r" (sig)); \ - sig; \ - }) - -#define RSEQ_SIG RSEQ_SIG_DATA - +#ifdef __ARMEB__ +#define RSEQ_SIG 0xf3def5e7 /* udf #24035 ; 0x5de3 (ARMv6+) */ +#else +#define RSEQ_SIG 0xe7f5def3 /* udf #24035 ; 0x5de3 */ #endif #define rseq_smp_mb() __asm__ __volatile__ ("dmb" ::: "memory", "cc") @@ -125,8 +131,7 @@ do { \ __rseq_str(table_label) ":\n\t" \ ".word " __rseq_str(version) ", " __rseq_str(flags) "\n\t" \ ".word " __rseq_str(start_ip) ", 0x0, " __rseq_str(post_commit_offset) ", 0x0, " __rseq_str(abort_ip) ", 0x0\n\t" \ - ".arm\n\t" \ - ".inst " __rseq_str(RSEQ_SIG_CODE) "\n\t" \ + ".word " __rseq_str(RSEQ_SIG) "\n\t" \ __rseq_str(label) ":\n\t" \ teardown \ "b %l[" __rseq_str(abort_label) "]\n\t" -- 2.20.1

5 years, 9 months

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