From: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
To: linux-kernel@vger.kernel.org
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
stable@vger.kernel.org,
Mathieu Desnoyers <mathieu.desnoyers@efficios.com>,
"Peter Zijlstra (Intel)" <peterz@infradead.org>
Subject: [PATCH 5.10 64/84] selftests/rseq: Introduce rseq_get_abi() helper
Date: Tue, 5 Jul 2022 13:58:27 +0200 [thread overview]
Message-ID: <20220705115617.191093140@linuxfoundation.org> (raw)
In-Reply-To: <20220705115615.323395630@linuxfoundation.org>
From: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
commit e546cd48ccc456074ddb8920732aef4af65d7ca7 upstream.
This is done in preparation for the selftest uplift to become compatible
with glibc-2.35.
glibc-2.35 exposes the rseq per-thread data in the TCB, accessible
at an offset from the thread pointer, rather than through an actual
Thread-Local Storage (TLS) variable, as the kernel selftests initially
expected.
Introduce a rseq_get_abi() helper, initially using the __rseq_abi
TLS variable, in preparation for changing this userspace ABI for one
which is compatible with glibc-2.35.
Note that the __rseq_abi TLS and glibc-2.35's ABI for per-thread data
cannot actively coexist in a process, because the kernel supports only
a single rseq registration per thread.
Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Link: https://lkml.kernel.org/r/20220124171253.22072-6-mathieu.desnoyers@efficios.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
tools/testing/selftests/rseq/rseq-arm.h | 32 +++++++++++++++---------------
tools/testing/selftests/rseq/rseq-arm64.h | 32 +++++++++++++++---------------
tools/testing/selftests/rseq/rseq-mips.h | 32 +++++++++++++++---------------
tools/testing/selftests/rseq/rseq-ppc.h | 32 +++++++++++++++---------------
tools/testing/selftests/rseq/rseq-s390.h | 24 +++++++++++-----------
tools/testing/selftests/rseq/rseq-x86.h | 30 ++++++++++++++--------------
tools/testing/selftests/rseq/rseq.h | 11 +++++++---
7 files changed, 99 insertions(+), 94 deletions(-)
--- a/tools/testing/selftests/rseq/rseq-arm.h
+++ b/tools/testing/selftests/rseq/rseq-arm.h
@@ -185,8 +185,8 @@ int rseq_cmpeqv_storev(intptr_t *v, intp
"5:\n\t"
: /* gcc asm goto does not allow outputs */
: [cpu_id] "r" (cpu),
- [current_cpu_id] "m" (__rseq_abi.cpu_id),
- [rseq_cs] "m" (__rseq_abi.rseq_cs),
+ [current_cpu_id] "m" (rseq_get_abi()->cpu_id),
+ [rseq_cs] "m" (rseq_get_abi()->rseq_cs),
[v] "m" (*v),
[expect] "r" (expect),
[newv] "r" (newv)
@@ -255,8 +255,8 @@ int rseq_cmpnev_storeoffp_load(intptr_t
"5:\n\t"
: /* gcc asm goto does not allow outputs */
: [cpu_id] "r" (cpu),
- [current_cpu_id] "m" (__rseq_abi.cpu_id),
- [rseq_cs] "m" (__rseq_abi.rseq_cs),
+ [current_cpu_id] "m" (rseq_get_abi()->cpu_id),
+ [rseq_cs] "m" (rseq_get_abi()->rseq_cs),
/* final store input */
[v] "m" (*v),
[expectnot] "r" (expectnot),
@@ -316,8 +316,8 @@ int rseq_addv(intptr_t *v, intptr_t coun
"5:\n\t"
: /* gcc asm goto does not allow outputs */
: [cpu_id] "r" (cpu),
- [current_cpu_id] "m" (__rseq_abi.cpu_id),
- [rseq_cs] "m" (__rseq_abi.rseq_cs),
+ [current_cpu_id] "m" (rseq_get_abi()->cpu_id),
+ [rseq_cs] "m" (rseq_get_abi()->rseq_cs),
[v] "m" (*v),
[count] "Ir" (count)
RSEQ_INJECT_INPUT
@@ -381,8 +381,8 @@ int rseq_cmpeqv_trystorev_storev(intptr_
"5:\n\t"
: /* gcc asm goto does not allow outputs */
: [cpu_id] "r" (cpu),
- [current_cpu_id] "m" (__rseq_abi.cpu_id),
- [rseq_cs] "m" (__rseq_abi.rseq_cs),
+ [current_cpu_id] "m" (rseq_get_abi()->cpu_id),
+ [rseq_cs] "m" (rseq_get_abi()->rseq_cs),
/* try store input */
[v2] "m" (*v2),
[newv2] "r" (newv2),
@@ -457,8 +457,8 @@ int rseq_cmpeqv_trystorev_storev_release
"5:\n\t"
: /* gcc asm goto does not allow outputs */
: [cpu_id] "r" (cpu),
- [current_cpu_id] "m" (__rseq_abi.cpu_id),
- [rseq_cs] "m" (__rseq_abi.rseq_cs),
+ [current_cpu_id] "m" (rseq_get_abi()->cpu_id),
+ [rseq_cs] "m" (rseq_get_abi()->rseq_cs),
/* try store input */
[v2] "m" (*v2),
[newv2] "r" (newv2),
@@ -537,8 +537,8 @@ int rseq_cmpeqv_cmpeqv_storev(intptr_t *
"5:\n\t"
: /* gcc asm goto does not allow outputs */
: [cpu_id] "r" (cpu),
- [current_cpu_id] "m" (__rseq_abi.cpu_id),
- [rseq_cs] "m" (__rseq_abi.rseq_cs),
+ [current_cpu_id] "m" (rseq_get_abi()->cpu_id),
+ [rseq_cs] "m" (rseq_get_abi()->rseq_cs),
/* cmp2 input */
[v2] "m" (*v2),
[expect2] "r" (expect2),
@@ -657,8 +657,8 @@ int rseq_cmpeqv_trymemcpy_storev(intptr_
"8:\n\t"
: /* gcc asm goto does not allow outputs */
: [cpu_id] "r" (cpu),
- [current_cpu_id] "m" (__rseq_abi.cpu_id),
- [rseq_cs] "m" (__rseq_abi.rseq_cs),
+ [current_cpu_id] "m" (rseq_get_abi()->cpu_id),
+ [rseq_cs] "m" (rseq_get_abi()->rseq_cs),
/* final store input */
[v] "m" (*v),
[expect] "r" (expect),
@@ -782,8 +782,8 @@ int rseq_cmpeqv_trymemcpy_storev_release
"8:\n\t"
: /* gcc asm goto does not allow outputs */
: [cpu_id] "r" (cpu),
- [current_cpu_id] "m" (__rseq_abi.cpu_id),
- [rseq_cs] "m" (__rseq_abi.rseq_cs),
+ [current_cpu_id] "m" (rseq_get_abi()->cpu_id),
+ [rseq_cs] "m" (rseq_get_abi()->rseq_cs),
/* final store input */
[v] "m" (*v),
[expect] "r" (expect),
--- a/tools/testing/selftests/rseq/rseq-arm64.h
+++ b/tools/testing/selftests/rseq/rseq-arm64.h
@@ -230,8 +230,8 @@ int rseq_cmpeqv_storev(intptr_t *v, intp
RSEQ_ASM_DEFINE_ABORT(4, abort)
: /* gcc asm goto does not allow outputs */
: [cpu_id] "r" (cpu),
- [current_cpu_id] "Qo" (__rseq_abi.cpu_id),
- [rseq_cs] "m" (__rseq_abi.rseq_cs),
+ [current_cpu_id] "Qo" (rseq_get_abi()->cpu_id),
+ [rseq_cs] "m" (rseq_get_abi()->rseq_cs),
[v] "Qo" (*v),
[expect] "r" (expect),
[newv] "r" (newv)
@@ -287,8 +287,8 @@ int rseq_cmpnev_storeoffp_load(intptr_t
RSEQ_ASM_DEFINE_ABORT(4, abort)
: /* gcc asm goto does not allow outputs */
: [cpu_id] "r" (cpu),
- [current_cpu_id] "Qo" (__rseq_abi.cpu_id),
- [rseq_cs] "m" (__rseq_abi.rseq_cs),
+ [current_cpu_id] "Qo" (rseq_get_abi()->cpu_id),
+ [rseq_cs] "m" (rseq_get_abi()->rseq_cs),
[v] "Qo" (*v),
[expectnot] "r" (expectnot),
[load] "Qo" (*load),
@@ -337,8 +337,8 @@ int rseq_addv(intptr_t *v, intptr_t coun
RSEQ_ASM_DEFINE_ABORT(4, abort)
: /* gcc asm goto does not allow outputs */
: [cpu_id] "r" (cpu),
- [current_cpu_id] "Qo" (__rseq_abi.cpu_id),
- [rseq_cs] "m" (__rseq_abi.rseq_cs),
+ [current_cpu_id] "Qo" (rseq_get_abi()->cpu_id),
+ [rseq_cs] "m" (rseq_get_abi()->rseq_cs),
[v] "Qo" (*v),
[count] "r" (count)
RSEQ_INJECT_INPUT
@@ -388,8 +388,8 @@ int rseq_cmpeqv_trystorev_storev(intptr_
RSEQ_ASM_DEFINE_ABORT(4, abort)
: /* gcc asm goto does not allow outputs */
: [cpu_id] "r" (cpu),
- [current_cpu_id] "Qo" (__rseq_abi.cpu_id),
- [rseq_cs] "m" (__rseq_abi.rseq_cs),
+ [current_cpu_id] "Qo" (rseq_get_abi()->cpu_id),
+ [rseq_cs] "m" (rseq_get_abi()->rseq_cs),
[expect] "r" (expect),
[v] "Qo" (*v),
[newv] "r" (newv),
@@ -447,8 +447,8 @@ int rseq_cmpeqv_trystorev_storev_release
RSEQ_ASM_DEFINE_ABORT(4, abort)
: /* gcc asm goto does not allow outputs */
: [cpu_id] "r" (cpu),
- [current_cpu_id] "Qo" (__rseq_abi.cpu_id),
- [rseq_cs] "m" (__rseq_abi.rseq_cs),
+ [current_cpu_id] "Qo" (rseq_get_abi()->cpu_id),
+ [rseq_cs] "m" (rseq_get_abi()->rseq_cs),
[expect] "r" (expect),
[v] "Qo" (*v),
[newv] "r" (newv),
@@ -508,8 +508,8 @@ int rseq_cmpeqv_cmpeqv_storev(intptr_t *
RSEQ_ASM_DEFINE_ABORT(4, abort)
: /* gcc asm goto does not allow outputs */
: [cpu_id] "r" (cpu),
- [current_cpu_id] "Qo" (__rseq_abi.cpu_id),
- [rseq_cs] "m" (__rseq_abi.rseq_cs),
+ [current_cpu_id] "Qo" (rseq_get_abi()->cpu_id),
+ [rseq_cs] "m" (rseq_get_abi()->rseq_cs),
[v] "Qo" (*v),
[expect] "r" (expect),
[v2] "Qo" (*v2),
@@ -569,8 +569,8 @@ int rseq_cmpeqv_trymemcpy_storev(intptr_
RSEQ_ASM_DEFINE_ABORT(4, abort)
: /* gcc asm goto does not allow outputs */
: [cpu_id] "r" (cpu),
- [current_cpu_id] "Qo" (__rseq_abi.cpu_id),
- [rseq_cs] "m" (__rseq_abi.rseq_cs),
+ [current_cpu_id] "Qo" (rseq_get_abi()->cpu_id),
+ [rseq_cs] "m" (rseq_get_abi()->rseq_cs),
[expect] "r" (expect),
[v] "Qo" (*v),
[newv] "r" (newv),
@@ -629,8 +629,8 @@ int rseq_cmpeqv_trymemcpy_storev_release
RSEQ_ASM_DEFINE_ABORT(4, abort)
: /* gcc asm goto does not allow outputs */
: [cpu_id] "r" (cpu),
- [current_cpu_id] "Qo" (__rseq_abi.cpu_id),
- [rseq_cs] "m" (__rseq_abi.rseq_cs),
+ [current_cpu_id] "Qo" (rseq_get_abi()->cpu_id),
+ [rseq_cs] "m" (rseq_get_abi()->rseq_cs),
[expect] "r" (expect),
[v] "Qo" (*v),
[newv] "r" (newv),
--- a/tools/testing/selftests/rseq/rseq-mips.h
+++ b/tools/testing/selftests/rseq/rseq-mips.h
@@ -190,8 +190,8 @@ int rseq_cmpeqv_storev(intptr_t *v, intp
"5:\n\t"
: /* gcc asm goto does not allow outputs */
: [cpu_id] "r" (cpu),
- [current_cpu_id] "m" (__rseq_abi.cpu_id),
- [rseq_cs] "m" (__rseq_abi.rseq_cs),
+ [current_cpu_id] "m" (rseq_get_abi()->cpu_id),
+ [rseq_cs] "m" (rseq_get_abi()->rseq_cs),
[v] "m" (*v),
[expect] "r" (expect),
[newv] "r" (newv)
@@ -258,8 +258,8 @@ int rseq_cmpnev_storeoffp_load(intptr_t
"5:\n\t"
: /* gcc asm goto does not allow outputs */
: [cpu_id] "r" (cpu),
- [current_cpu_id] "m" (__rseq_abi.cpu_id),
- [rseq_cs] "m" (__rseq_abi.rseq_cs),
+ [current_cpu_id] "m" (rseq_get_abi()->cpu_id),
+ [rseq_cs] "m" (rseq_get_abi()->rseq_cs),
/* final store input */
[v] "m" (*v),
[expectnot] "r" (expectnot),
@@ -319,8 +319,8 @@ int rseq_addv(intptr_t *v, intptr_t coun
"5:\n\t"
: /* gcc asm goto does not allow outputs */
: [cpu_id] "r" (cpu),
- [current_cpu_id] "m" (__rseq_abi.cpu_id),
- [rseq_cs] "m" (__rseq_abi.rseq_cs),
+ [current_cpu_id] "m" (rseq_get_abi()->cpu_id),
+ [rseq_cs] "m" (rseq_get_abi()->rseq_cs),
[v] "m" (*v),
[count] "Ir" (count)
RSEQ_INJECT_INPUT
@@ -382,8 +382,8 @@ int rseq_cmpeqv_trystorev_storev(intptr_
"5:\n\t"
: /* gcc asm goto does not allow outputs */
: [cpu_id] "r" (cpu),
- [current_cpu_id] "m" (__rseq_abi.cpu_id),
- [rseq_cs] "m" (__rseq_abi.rseq_cs),
+ [current_cpu_id] "m" (rseq_get_abi()->cpu_id),
+ [rseq_cs] "m" (rseq_get_abi()->rseq_cs),
/* try store input */
[v2] "m" (*v2),
[newv2] "r" (newv2),
@@ -456,8 +456,8 @@ int rseq_cmpeqv_trystorev_storev_release
"5:\n\t"
: /* gcc asm goto does not allow outputs */
: [cpu_id] "r" (cpu),
- [current_cpu_id] "m" (__rseq_abi.cpu_id),
- [rseq_cs] "m" (__rseq_abi.rseq_cs),
+ [current_cpu_id] "m" (rseq_get_abi()->cpu_id),
+ [rseq_cs] "m" (rseq_get_abi()->rseq_cs),
/* try store input */
[v2] "m" (*v2),
[newv2] "r" (newv2),
@@ -532,8 +532,8 @@ int rseq_cmpeqv_cmpeqv_storev(intptr_t *
"5:\n\t"
: /* gcc asm goto does not allow outputs */
: [cpu_id] "r" (cpu),
- [current_cpu_id] "m" (__rseq_abi.cpu_id),
- [rseq_cs] "m" (__rseq_abi.rseq_cs),
+ [current_cpu_id] "m" (rseq_get_abi()->cpu_id),
+ [rseq_cs] "m" (rseq_get_abi()->rseq_cs),
/* cmp2 input */
[v2] "m" (*v2),
[expect2] "r" (expect2),
@@ -649,8 +649,8 @@ int rseq_cmpeqv_trymemcpy_storev(intptr_
"8:\n\t"
: /* gcc asm goto does not allow outputs */
: [cpu_id] "r" (cpu),
- [current_cpu_id] "m" (__rseq_abi.cpu_id),
- [rseq_cs] "m" (__rseq_abi.rseq_cs),
+ [current_cpu_id] "m" (rseq_get_abi()->cpu_id),
+ [rseq_cs] "m" (rseq_get_abi()->rseq_cs),
/* final store input */
[v] "m" (*v),
[expect] "r" (expect),
@@ -771,8 +771,8 @@ int rseq_cmpeqv_trymemcpy_storev_release
"8:\n\t"
: /* gcc asm goto does not allow outputs */
: [cpu_id] "r" (cpu),
- [current_cpu_id] "m" (__rseq_abi.cpu_id),
- [rseq_cs] "m" (__rseq_abi.rseq_cs),
+ [current_cpu_id] "m" (rseq_get_abi()->cpu_id),
+ [rseq_cs] "m" (rseq_get_abi()->rseq_cs),
/* final store input */
[v] "m" (*v),
[expect] "r" (expect),
--- a/tools/testing/selftests/rseq/rseq-ppc.h
+++ b/tools/testing/selftests/rseq/rseq-ppc.h
@@ -235,8 +235,8 @@ int rseq_cmpeqv_storev(intptr_t *v, intp
RSEQ_ASM_DEFINE_ABORT(4, abort)
: /* gcc asm goto does not allow outputs */
: [cpu_id] "r" (cpu),
- [current_cpu_id] "m" (__rseq_abi.cpu_id),
- [rseq_cs] "m" (__rseq_abi.rseq_cs),
+ [current_cpu_id] "m" (rseq_get_abi()->cpu_id),
+ [rseq_cs] "m" (rseq_get_abi()->rseq_cs),
[v] "m" (*v),
[expect] "r" (expect),
[newv] "r" (newv)
@@ -301,8 +301,8 @@ int rseq_cmpnev_storeoffp_load(intptr_t
RSEQ_ASM_DEFINE_ABORT(4, abort)
: /* gcc asm goto does not allow outputs */
: [cpu_id] "r" (cpu),
- [current_cpu_id] "m" (__rseq_abi.cpu_id),
- [rseq_cs] "m" (__rseq_abi.rseq_cs),
+ [current_cpu_id] "m" (rseq_get_abi()->cpu_id),
+ [rseq_cs] "m" (rseq_get_abi()->rseq_cs),
/* final store input */
[v] "m" (*v),
[expectnot] "r" (expectnot),
@@ -359,8 +359,8 @@ int rseq_addv(intptr_t *v, intptr_t coun
RSEQ_ASM_DEFINE_ABORT(4, abort)
: /* gcc asm goto does not allow outputs */
: [cpu_id] "r" (cpu),
- [current_cpu_id] "m" (__rseq_abi.cpu_id),
- [rseq_cs] "m" (__rseq_abi.rseq_cs),
+ [current_cpu_id] "m" (rseq_get_abi()->cpu_id),
+ [rseq_cs] "m" (rseq_get_abi()->rseq_cs),
/* final store input */
[v] "m" (*v),
[count] "r" (count)
@@ -419,8 +419,8 @@ int rseq_cmpeqv_trystorev_storev(intptr_
RSEQ_ASM_DEFINE_ABORT(4, abort)
: /* gcc asm goto does not allow outputs */
: [cpu_id] "r" (cpu),
- [current_cpu_id] "m" (__rseq_abi.cpu_id),
- [rseq_cs] "m" (__rseq_abi.rseq_cs),
+ [current_cpu_id] "m" (rseq_get_abi()->cpu_id),
+ [rseq_cs] "m" (rseq_get_abi()->rseq_cs),
/* try store input */
[v2] "m" (*v2),
[newv2] "r" (newv2),
@@ -489,8 +489,8 @@ int rseq_cmpeqv_trystorev_storev_release
RSEQ_ASM_DEFINE_ABORT(4, abort)
: /* gcc asm goto does not allow outputs */
: [cpu_id] "r" (cpu),
- [current_cpu_id] "m" (__rseq_abi.cpu_id),
- [rseq_cs] "m" (__rseq_abi.rseq_cs),
+ [current_cpu_id] "m" (rseq_get_abi()->cpu_id),
+ [rseq_cs] "m" (rseq_get_abi()->rseq_cs),
/* try store input */
[v2] "m" (*v2),
[newv2] "r" (newv2),
@@ -560,8 +560,8 @@ int rseq_cmpeqv_cmpeqv_storev(intptr_t *
RSEQ_ASM_DEFINE_ABORT(4, abort)
: /* gcc asm goto does not allow outputs */
: [cpu_id] "r" (cpu),
- [current_cpu_id] "m" (__rseq_abi.cpu_id),
- [rseq_cs] "m" (__rseq_abi.rseq_cs),
+ [current_cpu_id] "m" (rseq_get_abi()->cpu_id),
+ [rseq_cs] "m" (rseq_get_abi()->rseq_cs),
/* cmp2 input */
[v2] "m" (*v2),
[expect2] "r" (expect2),
@@ -635,8 +635,8 @@ int rseq_cmpeqv_trymemcpy_storev(intptr_
RSEQ_ASM_DEFINE_ABORT(4, abort)
: /* gcc asm goto does not allow outputs */
: [cpu_id] "r" (cpu),
- [current_cpu_id] "m" (__rseq_abi.cpu_id),
- [rseq_cs] "m" (__rseq_abi.rseq_cs),
+ [current_cpu_id] "m" (rseq_get_abi()->cpu_id),
+ [rseq_cs] "m" (rseq_get_abi()->rseq_cs),
/* final store input */
[v] "m" (*v),
[expect] "r" (expect),
@@ -711,8 +711,8 @@ int rseq_cmpeqv_trymemcpy_storev_release
RSEQ_ASM_DEFINE_ABORT(4, abort)
: /* gcc asm goto does not allow outputs */
: [cpu_id] "r" (cpu),
- [current_cpu_id] "m" (__rseq_abi.cpu_id),
- [rseq_cs] "m" (__rseq_abi.rseq_cs),
+ [current_cpu_id] "m" (rseq_get_abi()->cpu_id),
+ [rseq_cs] "m" (rseq_get_abi()->rseq_cs),
/* final store input */
[v] "m" (*v),
[expect] "r" (expect),
--- a/tools/testing/selftests/rseq/rseq-s390.h
+++ b/tools/testing/selftests/rseq/rseq-s390.h
@@ -165,8 +165,8 @@ int rseq_cmpeqv_storev(intptr_t *v, intp
RSEQ_ASM_DEFINE_ABORT(4, "", abort)
: /* gcc asm goto does not allow outputs */
: [cpu_id] "r" (cpu),
- [current_cpu_id] "m" (__rseq_abi.cpu_id),
- [rseq_cs] "m" (__rseq_abi.rseq_cs),
+ [current_cpu_id] "m" (rseq_get_abi()->cpu_id),
+ [rseq_cs] "m" (rseq_get_abi()->rseq_cs),
[v] "m" (*v),
[expect] "r" (expect),
[newv] "r" (newv)
@@ -233,8 +233,8 @@ int rseq_cmpnev_storeoffp_load(intptr_t
RSEQ_ASM_DEFINE_ABORT(4, "", abort)
: /* gcc asm goto does not allow outputs */
: [cpu_id] "r" (cpu),
- [current_cpu_id] "m" (__rseq_abi.cpu_id),
- [rseq_cs] "m" (__rseq_abi.rseq_cs),
+ [current_cpu_id] "m" (rseq_get_abi()->cpu_id),
+ [rseq_cs] "m" (rseq_get_abi()->rseq_cs),
/* final store input */
[v] "m" (*v),
[expectnot] "r" (expectnot),
@@ -288,8 +288,8 @@ int rseq_addv(intptr_t *v, intptr_t coun
RSEQ_ASM_DEFINE_ABORT(4, "", abort)
: /* gcc asm goto does not allow outputs */
: [cpu_id] "r" (cpu),
- [current_cpu_id] "m" (__rseq_abi.cpu_id),
- [rseq_cs] "m" (__rseq_abi.rseq_cs),
+ [current_cpu_id] "m" (rseq_get_abi()->cpu_id),
+ [rseq_cs] "m" (rseq_get_abi()->rseq_cs),
/* final store input */
[v] "m" (*v),
[count] "r" (count)
@@ -347,8 +347,8 @@ int rseq_cmpeqv_trystorev_storev(intptr_
RSEQ_ASM_DEFINE_ABORT(4, "", abort)
: /* gcc asm goto does not allow outputs */
: [cpu_id] "r" (cpu),
- [current_cpu_id] "m" (__rseq_abi.cpu_id),
- [rseq_cs] "m" (__rseq_abi.rseq_cs),
+ [current_cpu_id] "m" (rseq_get_abi()->cpu_id),
+ [rseq_cs] "m" (rseq_get_abi()->rseq_cs),
/* try store input */
[v2] "m" (*v2),
[newv2] "r" (newv2),
@@ -426,8 +426,8 @@ int rseq_cmpeqv_cmpeqv_storev(intptr_t *
RSEQ_ASM_DEFINE_ABORT(4, "", abort)
: /* gcc asm goto does not allow outputs */
: [cpu_id] "r" (cpu),
- [current_cpu_id] "m" (__rseq_abi.cpu_id),
- [rseq_cs] "m" (__rseq_abi.rseq_cs),
+ [current_cpu_id] "m" (rseq_get_abi()->cpu_id),
+ [rseq_cs] "m" (rseq_get_abi()->rseq_cs),
/* cmp2 input */
[v2] "m" (*v2),
[expect2] "r" (expect2),
@@ -534,8 +534,8 @@ int rseq_cmpeqv_trymemcpy_storev(intptr_
#endif
: /* gcc asm goto does not allow outputs */
: [cpu_id] "r" (cpu),
- [current_cpu_id] "m" (__rseq_abi.cpu_id),
- [rseq_cs] "m" (__rseq_abi.rseq_cs),
+ [current_cpu_id] "m" (rseq_get_abi()->cpu_id),
+ [rseq_cs] "m" (rseq_get_abi()->rseq_cs),
/* final store input */
[v] "m" (*v),
[expect] "r" (expect),
--- a/tools/testing/selftests/rseq/rseq-x86.h
+++ b/tools/testing/selftests/rseq/rseq-x86.h
@@ -141,7 +141,7 @@ int rseq_cmpeqv_storev(intptr_t *v, intp
RSEQ_ASM_DEFINE_ABORT(4, "", abort)
: /* gcc asm goto does not allow outputs */
: [cpu_id] "r" (cpu),
- [rseq_abi] "r" (&__rseq_abi),
+ [rseq_abi] "r" (rseq_get_abi()),
[v] "m" (*v),
[expect] "r" (expect),
[newv] "r" (newv)
@@ -207,7 +207,7 @@ int rseq_cmpnev_storeoffp_load(intptr_t
RSEQ_ASM_DEFINE_ABORT(4, "", abort)
: /* gcc asm goto does not allow outputs */
: [cpu_id] "r" (cpu),
- [rseq_abi] "r" (&__rseq_abi),
+ [rseq_abi] "r" (rseq_get_abi()),
/* final store input */
[v] "m" (*v),
[expectnot] "r" (expectnot),
@@ -258,7 +258,7 @@ int rseq_addv(intptr_t *v, intptr_t coun
RSEQ_ASM_DEFINE_ABORT(4, "", abort)
: /* gcc asm goto does not allow outputs */
: [cpu_id] "r" (cpu),
- [rseq_abi] "r" (&__rseq_abi),
+ [rseq_abi] "r" (rseq_get_abi()),
/* final store input */
[v] "m" (*v),
[count] "er" (count)
@@ -314,7 +314,7 @@ int rseq_offset_deref_addv(intptr_t *ptr
RSEQ_ASM_DEFINE_ABORT(4, "", abort)
: /* gcc asm goto does not allow outputs */
: [cpu_id] "r" (cpu),
- [rseq_abi] "r" (&__rseq_abi),
+ [rseq_abi] "r" (rseq_get_abi()),
/* final store input */
[ptr] "m" (*ptr),
[off] "er" (off),
@@ -372,7 +372,7 @@ int rseq_cmpeqv_trystorev_storev(intptr_
RSEQ_ASM_DEFINE_ABORT(4, "", abort)
: /* gcc asm goto does not allow outputs */
: [cpu_id] "r" (cpu),
- [rseq_abi] "r" (&__rseq_abi),
+ [rseq_abi] "r" (rseq_get_abi()),
/* try store input */
[v2] "m" (*v2),
[newv2] "r" (newv2),
@@ -449,7 +449,7 @@ int rseq_cmpeqv_cmpeqv_storev(intptr_t *
RSEQ_ASM_DEFINE_ABORT(4, "", abort)
: /* gcc asm goto does not allow outputs */
: [cpu_id] "r" (cpu),
- [rseq_abi] "r" (&__rseq_abi),
+ [rseq_abi] "r" (rseq_get_abi()),
/* cmp2 input */
[v2] "m" (*v2),
[expect2] "r" (expect2),
@@ -555,7 +555,7 @@ int rseq_cmpeqv_trymemcpy_storev(intptr_
#endif
: /* gcc asm goto does not allow outputs */
: [cpu_id] "r" (cpu),
- [rseq_abi] "r" (&__rseq_abi),
+ [rseq_abi] "r" (rseq_get_abi()),
/* final store input */
[v] "m" (*v),
[expect] "r" (expect),
@@ -719,7 +719,7 @@ int rseq_cmpeqv_storev(intptr_t *v, intp
RSEQ_ASM_DEFINE_ABORT(4, "", abort)
: /* gcc asm goto does not allow outputs */
: [cpu_id] "r" (cpu),
- [rseq_abi] "r" (&__rseq_abi),
+ [rseq_abi] "r" (rseq_get_abi()),
[v] "m" (*v),
[expect] "r" (expect),
[newv] "r" (newv)
@@ -785,7 +785,7 @@ int rseq_cmpnev_storeoffp_load(intptr_t
RSEQ_ASM_DEFINE_ABORT(4, "", abort)
: /* gcc asm goto does not allow outputs */
: [cpu_id] "r" (cpu),
- [rseq_abi] "r" (&__rseq_abi),
+ [rseq_abi] "r" (rseq_get_abi()),
/* final store input */
[v] "m" (*v),
[expectnot] "r" (expectnot),
@@ -836,7 +836,7 @@ int rseq_addv(intptr_t *v, intptr_t coun
RSEQ_ASM_DEFINE_ABORT(4, "", abort)
: /* gcc asm goto does not allow outputs */
: [cpu_id] "r" (cpu),
- [rseq_abi] "r" (&__rseq_abi),
+ [rseq_abi] "r" (rseq_get_abi()),
/* final store input */
[v] "m" (*v),
[count] "ir" (count)
@@ -894,7 +894,7 @@ int rseq_cmpeqv_trystorev_storev(intptr_
RSEQ_ASM_DEFINE_ABORT(4, "", abort)
: /* gcc asm goto does not allow outputs */
: [cpu_id] "r" (cpu),
- [rseq_abi] "r" (&__rseq_abi),
+ [rseq_abi] "r" (rseq_get_abi()),
/* try store input */
[v2] "m" (*v2),
[newv2] "m" (newv2),
@@ -962,7 +962,7 @@ int rseq_cmpeqv_trystorev_storev_release
RSEQ_ASM_DEFINE_ABORT(4, "", abort)
: /* gcc asm goto does not allow outputs */
: [cpu_id] "r" (cpu),
- [rseq_abi] "r" (&__rseq_abi),
+ [rseq_abi] "r" (rseq_get_abi()),
/* try store input */
[v2] "m" (*v2),
[newv2] "r" (newv2),
@@ -1032,7 +1032,7 @@ int rseq_cmpeqv_cmpeqv_storev(intptr_t *
RSEQ_ASM_DEFINE_ABORT(4, "", abort)
: /* gcc asm goto does not allow outputs */
: [cpu_id] "r" (cpu),
- [rseq_abi] "r" (&__rseq_abi),
+ [rseq_abi] "r" (rseq_get_abi()),
/* cmp2 input */
[v2] "m" (*v2),
[expect2] "r" (expect2),
@@ -1142,7 +1142,7 @@ int rseq_cmpeqv_trymemcpy_storev(intptr_
#endif
: /* gcc asm goto does not allow outputs */
: [cpu_id] "r" (cpu),
- [rseq_abi] "r" (&__rseq_abi),
+ [rseq_abi] "r" (rseq_get_abi()),
/* final store input */
[v] "m" (*v),
[expect] "m" (expect),
@@ -1255,7 +1255,7 @@ int rseq_cmpeqv_trymemcpy_storev_release
#endif
: /* gcc asm goto does not allow outputs */
: [cpu_id] "r" (cpu),
- [rseq_abi] "r" (&__rseq_abi),
+ [rseq_abi] "r" (rseq_get_abi()),
/* final store input */
[v] "m" (*v),
[expect] "m" (expect),
--- a/tools/testing/selftests/rseq/rseq.h
+++ b/tools/testing/selftests/rseq/rseq.h
@@ -46,6 +46,11 @@
extern __thread struct rseq_abi __rseq_abi;
extern int __rseq_handled;
+static inline struct rseq_abi *rseq_get_abi(void)
+{
+ return &__rseq_abi;
+}
+
#define rseq_likely(x) __builtin_expect(!!(x), 1)
#define rseq_unlikely(x) __builtin_expect(!!(x), 0)
#define rseq_barrier() __asm__ __volatile__("" : : : "memory")
@@ -108,7 +113,7 @@ int32_t rseq_fallback_current_cpu(void);
*/
static inline int32_t rseq_current_cpu_raw(void)
{
- return RSEQ_ACCESS_ONCE(__rseq_abi.cpu_id);
+ return RSEQ_ACCESS_ONCE(rseq_get_abi()->cpu_id);
}
/*
@@ -124,7 +129,7 @@ static inline int32_t rseq_current_cpu_r
*/
static inline uint32_t rseq_cpu_start(void)
{
- return RSEQ_ACCESS_ONCE(__rseq_abi.cpu_id_start);
+ return RSEQ_ACCESS_ONCE(rseq_get_abi()->cpu_id_start);
}
static inline uint32_t rseq_current_cpu(void)
@@ -139,7 +144,7 @@ static inline uint32_t rseq_current_cpu(
static inline void rseq_clear_rseq_cs(void)
{
- RSEQ_WRITE_ONCE(__rseq_abi.rseq_cs.arch.ptr, 0);
+ RSEQ_WRITE_ONCE(rseq_get_abi()->rseq_cs.arch.ptr, 0);
}
/*
next prev parent reply other threads:[~2022-07-05 12:19 UTC|newest]
Thread overview: 95+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-07-05 11:57 [PATCH 5.10 00/84] 5.10.129-rc1 review Greg Kroah-Hartman
2022-07-05 11:57 ` [PATCH 5.10 01/84] drm/amdgpu: To flush tlb for MMHUB of RAVEN series Greg Kroah-Hartman
2022-07-05 11:57 ` [PATCH 5.10 02/84] ipv6: take care of disable_policy when restoring routes Greg Kroah-Hartman
2022-07-05 11:57 ` [PATCH 5.10 03/84] nvme-pci: add NVME_QUIRK_BOGUS_NID for ADATA XPG SX6000LNP (AKA SPECTRIX S40G) Greg Kroah-Hartman
2022-07-05 11:57 ` [PATCH 5.10 04/84] nvdimm: Fix badblocks clear off-by-one error Greg Kroah-Hartman
2022-07-05 11:57 ` [PATCH 5.10 05/84] powerpc/prom_init: Fix kernel config grep Greg Kroah-Hartman
2022-07-05 11:57 ` [PATCH 5.10 06/84] powerpc/book3e: Fix PUD allocation size in map_kernel_page() Greg Kroah-Hartman
2022-07-05 11:57 ` [PATCH 5.10 07/84] powerpc/bpf: Fix use of user_pt_regs in uapi Greg Kroah-Hartman
2022-07-05 11:57 ` [PATCH 5.10 08/84] dm raid: fix accesses beyond end of raid member array Greg Kroah-Hartman
2022-07-05 11:57 ` [PATCH 5.10 09/84] dm raid: fix KASAN warning in raid5_add_disks Greg Kroah-Hartman
2022-07-05 11:57 ` [PATCH 5.10 10/84] s390/archrandom: simplify back to earlier design and initialize earlier Greg Kroah-Hartman
2022-07-05 11:57 ` [PATCH 5.10 11/84] SUNRPC: Fix READ_PLUS crasher Greg Kroah-Hartman
2022-07-05 11:57 ` [PATCH 5.10 12/84] net: rose: fix UAF bugs caused by timer handler Greg Kroah-Hartman
2022-07-05 11:57 ` [PATCH 5.10 13/84] net: usb: ax88179_178a: Fix packet receiving Greg Kroah-Hartman
2022-07-05 11:57 ` [PATCH 5.10 14/84] virtio-net: fix race between ndo_open() and virtio_device_ready() Greg Kroah-Hartman
2022-07-05 11:57 ` [PATCH 5.10 15/84] selftests/net: pass ipv6_args to udpgso_benchs IPv6 TCP test Greg Kroah-Hartman
2022-07-05 11:57 ` [PATCH 5.10 16/84] net: dsa: bcm_sf2: force pause link settings Greg Kroah-Hartman
2022-07-05 11:57 ` [PATCH 5.10 17/84] net: tun: unlink NAPI from device on destruction Greg Kroah-Hartman
2022-07-05 11:57 ` [PATCH 5.10 18/84] net: tun: stop NAPI when detaching queues Greg Kroah-Hartman
2022-07-05 11:57 ` [PATCH 5.10 19/84] net: dp83822: disable false carrier interrupt Greg Kroah-Hartman
2022-07-05 11:57 ` [PATCH 5.10 20/84] net: dp83822: disable rx error interrupt Greg Kroah-Hartman
2022-07-05 11:57 ` [PATCH 5.10 21/84] RDMA/qedr: Fix reporting QP timeout attribute Greg Kroah-Hartman
2022-07-05 11:57 ` [PATCH 5.10 22/84] RDMA/cm: Fix memory leak in ib_cm_insert_listen Greg Kroah-Hartman
2022-07-05 11:57 ` [PATCH 5.10 23/84] linux/dim: Fix divide by 0 in RDMA DIM Greg Kroah-Hartman
2022-07-05 11:57 ` [PATCH 5.10 24/84] usbnet: fix memory allocation in helpers Greg Kroah-Hartman
2022-07-05 11:57 ` [PATCH 5.10 25/84] net: ipv6: unexport __init-annotated seg6_hmac_net_init() Greg Kroah-Hartman
2022-07-05 11:57 ` [PATCH 5.10 26/84] NFSD: restore EINVAL error translation in nfsd_commit() Greg Kroah-Hartman
2022-07-05 11:57 ` [PATCH 5.10 27/84] caif_virtio: fix race between virtio_device_ready() and ndo_open() Greg Kroah-Hartman
2022-07-05 11:57 ` [PATCH 5.10 28/84] PM / devfreq: exynos-ppmu: Fix refcount leak in of_get_devfreq_events Greg Kroah-Hartman
2022-07-05 11:57 ` [PATCH 5.10 29/84] s390: remove unneeded select BUILD_BIN2C Greg Kroah-Hartman
2022-07-05 11:57 ` [PATCH 5.10 30/84] netfilter: nft_dynset: restore set element counter when failing to update Greg Kroah-Hartman
2022-07-05 11:57 ` [PATCH 5.10 31/84] net/sched: act_api: Notify user space if any actions were flushed before error Greg Kroah-Hartman
2022-07-05 11:57 ` [PATCH 5.10 32/84] net: bonding: fix possible NULL deref in rlb code Greg Kroah-Hartman
2022-07-05 11:57 ` [PATCH 5.10 33/84] net: bonding: fix use-after-free after 802.3ad slave unbind Greg Kroah-Hartman
2022-07-05 11:57 ` [PATCH 5.10 34/84] nfc: nfcmrvl: Fix irq_of_parse_and_map() return value Greg Kroah-Hartman
2022-07-05 11:57 ` [PATCH 5.10 35/84] NFC: nxp-nci: Dont issue a zero length i2c_master_read() Greg Kroah-Hartman
2022-07-05 11:57 ` [PATCH 5.10 36/84] tipc: move bc link creation back to tipc_node_create Greg Kroah-Hartman
2022-07-05 11:58 ` [PATCH 5.10 37/84] epic100: fix use after free on rmmod Greg Kroah-Hartman
2022-07-05 11:58 ` [PATCH 5.10 38/84] io_uring: ensure that send/sendmsg and recv/recvmsg check sqe->ioprio Greg Kroah-Hartman
2022-07-05 11:58 ` [PATCH 5.10 39/84] tunnels: do not assume mac header is set in skb_tunnel_check_pmtu() Greg Kroah-Hartman
2022-07-05 11:58 ` [PATCH 5.10 40/84] net: tun: avoid disabling NAPI twice Greg Kroah-Hartman
2022-07-05 11:58 ` [PATCH 5.10 41/84] xfs: use current->journal_info for detecting transaction recursion Greg Kroah-Hartman
2022-07-05 11:58 ` [PATCH 5.10 42/84] xfs: rename variable mp to parsing_mp Greg Kroah-Hartman
2022-07-05 11:58 ` [PATCH 5.10 43/84] xfs: Skip repetitive warnings about mount options Greg Kroah-Hartman
2022-07-05 11:58 ` [PATCH 5.10 44/84] xfs: ensure xfs_errortag_random_default matches XFS_ERRTAG_MAX Greg Kroah-Hartman
2022-07-05 11:58 ` [PATCH 5.10 45/84] xfs: fix xfs_trans slab cache name Greg Kroah-Hartman
2022-07-05 11:58 ` [PATCH 5.10 46/84] xfs: update superblock counters correctly for !lazysbcount Greg Kroah-Hartman
2022-07-05 11:58 ` [PATCH 5.10 47/84] xfs: fix xfs_reflink_unshare usage of filemap_write_and_wait_range Greg Kroah-Hartman
2022-07-05 11:58 ` [PATCH 5.10 48/84] tcp: add a missing nf_reset_ct() in 3WHS handling Greg Kroah-Hartman
2022-07-05 11:58 ` [PATCH 5.10 49/84] xen/gntdev: Avoid blocking in unmap_grant_pages() Greg Kroah-Hartman
2022-07-05 11:58 ` [PATCH 5.10 50/84] drivers: cpufreq: Add missing of_node_put() in qoriq-cpufreq.c Greg Kroah-Hartman
2022-07-05 11:58 ` [PATCH 5.10 51/84] selftests: mptcp: add ADD_ADDR timeout test case Greg Kroah-Hartman
2022-07-05 15:59 ` Matthieu Baerts
2022-07-05 16:31 ` Greg Kroah-Hartman
2022-07-05 18:54 ` Mat Martineau
2022-07-06 8:51 ` Matthieu Baerts
2022-07-05 11:58 ` [PATCH 5.10 52/84] selftests: mptcp: add link failure " Greg Kroah-Hartman
2022-07-05 11:58 ` [PATCH 5.10 53/84] selftests: mptcp: add ADD_ADDR IPv6 test cases Greg Kroah-Hartman
2022-07-05 11:58 ` [PATCH 5.10 54/84] selftests: mptcp: launch mptcp_connect with timeout Greg Kroah-Hartman
2022-07-05 11:58 ` [PATCH 5.10 55/84] selftests: mptcp: fix diag instability Greg Kroah-Hartman
2022-07-05 11:58 ` [PATCH 5.10 56/84] selftests: mptcp: more stable diag tests Greg Kroah-Hartman
2022-07-05 11:58 ` [PATCH 5.10 57/84] sit: use min Greg Kroah-Hartman
2022-07-05 11:58 ` [PATCH 5.10 58/84] ipv6/sit: fix ipip6_tunnel_get_prl return value Greg Kroah-Hartman
2022-07-05 11:58 ` [PATCH 5.10 59/84] hwmon: (ibmaem) dont call platform_device_del() if platform_device_add() fails Greg Kroah-Hartman
2022-07-05 11:58 ` [PATCH 5.10 60/84] selftests/rseq: remove ARRAY_SIZE define from individual tests Greg Kroah-Hartman
2022-07-05 11:58 ` [PATCH 5.10 61/84] selftests/rseq: introduce own copy of rseq uapi header Greg Kroah-Hartman
2022-07-05 11:58 ` [PATCH 5.10 62/84] selftests/rseq: Remove useless assignment to cpu variable Greg Kroah-Hartman
2022-07-05 11:58 ` [PATCH 5.10 63/84] selftests/rseq: Remove volatile from __rseq_abi Greg Kroah-Hartman
2022-07-05 11:58 ` Greg Kroah-Hartman [this message]
2022-07-05 11:58 ` [PATCH 5.10 65/84] selftests/rseq: Introduce thread pointer getters Greg Kroah-Hartman
2022-07-05 11:58 ` [PATCH 5.10 66/84] selftests/rseq: Uplift rseq selftests for compatibility with glibc-2.35 Greg Kroah-Hartman
2022-07-05 11:58 ` [PATCH 5.10 67/84] selftests/rseq: Fix ppc32: wrong rseq_cs 32-bit field pointer on big endian Greg Kroah-Hartman
2022-07-05 11:58 ` [PATCH 5.10 68/84] selftests/rseq: Fix ppc32 missing instruction selection "u" and "x" for load/store Greg Kroah-Hartman
2022-07-05 11:58 ` [PATCH 5.10 69/84] selftests/rseq: Fix ppc32 offsets by using long rather than off_t Greg Kroah-Hartman
2022-07-05 11:58 ` [PATCH 5.10 70/84] selftests/rseq: Fix warnings about #if checks of undefined tokens Greg Kroah-Hartman
2022-07-05 11:58 ` [PATCH 5.10 71/84] selftests/rseq: Remove arm/mips asm goto compiler work-around Greg Kroah-Hartman
2022-07-05 11:58 ` [PATCH 5.10 72/84] selftests/rseq: Fix: work-around asm goto compiler bugs Greg Kroah-Hartman
2022-07-05 11:58 ` [PATCH 5.10 73/84] selftests/rseq: x86-64: use %fs segment selector for accessing rseq thread area Greg Kroah-Hartman
2022-07-05 11:58 ` [PATCH 5.10 74/84] selftests/rseq: x86-32: use %gs " Greg Kroah-Hartman
2022-07-05 11:58 ` [PATCH 5.10 75/84] selftests/rseq: Change type of rseq_offset to ptrdiff_t Greg Kroah-Hartman
2022-07-05 11:58 ` [PATCH 5.10 76/84] xen/blkfront: fix leaking data in shared pages Greg Kroah-Hartman
2022-07-05 11:58 ` [PATCH 5.10 77/84] xen/netfront: " Greg Kroah-Hartman
2022-07-05 11:58 ` [PATCH 5.10 78/84] xen/netfront: force data bouncing when backend is untrusted Greg Kroah-Hartman
2022-07-05 11:58 ` [PATCH 5.10 79/84] xen/blkfront: " Greg Kroah-Hartman
2022-07-05 11:58 ` [PATCH 5.10 80/84] xen-netfront: restore __skb_queue_tail() positioning in xennet_get_responses() Greg Kroah-Hartman
2022-07-05 11:58 ` [PATCH 5.10 81/84] xen/arm: Fix race in RB-tree based P2M accounting Greg Kroah-Hartman
2022-07-05 11:58 ` [PATCH 5.10 82/84] net: usb: qmi_wwan: add Telit 0x1060 composition Greg Kroah-Hartman
2022-07-05 11:58 ` [PATCH 5.10 83/84] net: usb: qmi_wwan: add Telit 0x1070 composition Greg Kroah-Hartman
2022-07-05 11:58 ` [PATCH 5.10 84/84] clocksource/drivers/ixp4xx: remove EXPORT_SYMBOL_GPL from ixp4xx_timer_setup() Greg Kroah-Hartman
2022-07-05 18:04 ` [PATCH 5.10 00/84] 5.10.129-rc1 review Florian Fainelli
2022-07-06 6:49 ` Naresh Kamboju
2022-07-06 10:18 ` Sudip Mukherjee (Codethink)
2022-07-06 13:44 ` Guenter Roeck
2022-07-06 23:57 ` Shuah Khan
2022-07-07 0:53 ` Samuel Zou
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