From: "Alex Bennée" <alex.bennee@linaro.org>
To: peter.maydell@linaro.org
Cc: "Richard Henderson" <richard.henderson@linaro.org>,
"open list:ARM TCG CPUs" <qemu-arm@nongnu.org>,
"Alex Bennée" <alex.bennee@linaro.org>,
qemu-devel@nongnu.org
Subject: [PULL 12/17] tests/tcg: add simple commpage test case
Date: Tue, 9 Jun 2020 11:38:04 +0100 [thread overview]
Message-ID: <20200609103809.23443-13-alex.bennee@linaro.org> (raw)
In-Reply-To: <20200609103809.23443-1-alex.bennee@linaro.org>
The COMMPAGE are a number of kernel provided user-space routines for
32 bit ARM systems. Add a basic series of smoke tests to ensure it is
working as it should.
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20200605154929.26910-14-alex.bennee@linaro.org>
diff --git a/tests/tcg/arm/commpage.c b/tests/tcg/arm/commpage.c
new file mode 100644
index 00000000000..c76e70cb8bd
--- /dev/null
+++ b/tests/tcg/arm/commpage.c
@@ -0,0 +1,61 @@
+/*
+ * Verify the COMMPAGE emulation
+ *
+ * The ARM commpage is a set of user space helper functions provided
+ * by the kernel in an effort to ease portability of user space code
+ * between different CPUs with potentially different capabilities. It
+ * is a 32 bit invention and similar to the vdso segment in many ways.
+ *
+ * The ABI is documented in the Linux kernel:
+ * Documentation/arm/kernel_userspace_helpers.rst
+ *
+ * Copyright (c) 2020 Linaro Ltd
+ *
+ * SPDX-License-Identifier: GPL-2.0-or-later
+ */
+
+#include <stdlib.h>
+#include <stdio.h>
+#include <stdint.h>
+
+#define ARM_COMMPAGE (0xffff0f00u)
+#define ARM_KUSER_VERSION (*(int32_t *)(ARM_COMMPAGE + 0xfc))
+typedef void * (get_tls_fn)(void);
+#define ARM_KUSER_GET_TLS (*(get_tls_fn *)(ARM_COMMPAGE + 0xe0))
+typedef int (cmpxchg_fn)(int oldval, int newval, volatile int *ptr);
+#define ARM_KUSER_CMPXCHG (*(cmpxchg_fn *)(ARM_COMMPAGE + 0xc0))
+typedef void (dmb_fn)(void);
+#define ARM_KUSER_DMB (*(dmb_fn *)(ARM_COMMPAGE + 0xa0))
+typedef int (cmpxchg64_fn)(const int64_t *oldval,
+ const int64_t *newval,
+ volatile int64_t *ptr);
+#define ARM_KUSER_CMPXCHG64 (*(cmpxchg64_fn *)(ARM_COMMPAGE + 0x60))
+
+#define fail_unless(x) \
+ do { \
+ if (!(x)) { \
+ fprintf(stderr, "FAILED at %s:%d\n", __FILE__, __LINE__); \
+ exit(EXIT_FAILURE); \
+ } \
+ } while (0)
+
+
+int main(int argc, char *argv[argc])
+{
+ void *kuser_tls;
+ int val = 1;
+ const int64_t oldval = 1, newval = 2;
+ int64_t val64 = 1;
+
+ fail_unless(ARM_KUSER_VERSION == 0x5);
+ kuser_tls = ARM_KUSER_GET_TLS();
+ printf("TLS = %p\n", kuser_tls);
+ fail_unless(kuser_tls != 0);
+ fail_unless(ARM_KUSER_CMPXCHG(1, 2, &val) == 0);
+ printf("val = %d\n", val);
+ /* this is a crash test, not checking an actual barrier occurs */
+ ARM_KUSER_DMB();
+ fail_unless(ARM_KUSER_CMPXCHG64(&oldval, &newval, &val64) == 0);
+ printf("val64 = %lld\n", val64);
+ return 0;
+}
diff --git a/tests/tcg/arm/Makefile.target b/tests/tcg/arm/Makefile.target
index 11c39c601ea..3da09a38be7 100644
--- a/tests/tcg/arm/Makefile.target
+++ b/tests/tcg/arm/Makefile.target
@@ -68,6 +68,8 @@ run-semiconsole-arm: semiconsole-arm
run-plugin-semiconsole-arm-with-%:
$(call skip-test, $<, "MANUAL ONLY")
+ARM_TESTS += commpage
+
TESTS += $(ARM_TESTS)
# On ARM Linux only supports 4k pages
--
2.20.1
next prev parent reply other threads:[~2020-06-09 10:48 UTC|newest]
Thread overview: 76+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-06-09 10:37 [PULL 00/17] testing and misc fixes Alex Bennée
2020-06-09 10:37 ` [PULL 01/17] qemu-plugin.h: add missing include <stddef.h> to define size_t Alex Bennée
2020-06-09 10:37 ` [PULL 02/17] scripts/clean-includes: Mark 'qemu/qemu-plugin.h' as special header Alex Bennée
2020-06-09 10:37 ` [PULL 03/17] tests/plugin: correctly honour io_count Alex Bennée
2020-06-09 10:37 ` [PULL 04/17] exec: flush the whole TLB if a watchpoint crosses a page boundary Alex Bennée
2020-06-09 10:37 ` [PULL 05/17] .travis.yml: allow failure for unreliable hosts Alex Bennée
2020-06-09 10:37 ` [PULL 06/17] .shippable: temporaily disable some cross builds Alex Bennée
2020-06-09 10:37 ` [PULL 07/17] tests/docker: fix pre-requisite for debian-tricore-cross Alex Bennée
2020-06-09 10:38 ` [PULL 08/17] docker: update Ubuntu to 20.04 Alex Bennée
2020-06-09 10:38 ` [PULL 09/17] hw/virtio/vhost: re-factor vhost-section and allow DIRTY_MEMORY_CODE Alex Bennée
2020-06-09 10:38 ` [PULL 10/17] linux-user: provide fallback pgd_find_hole for bare chroots Alex Bennée
2020-06-09 10:38 ` [PULL 11/17] linux-user: deal with address wrap for ARM_COMMPAGE on 32 bit Alex Bennée
2020-06-09 10:38 ` [Bug 1880225] " Alex Bennée
2020-06-09 10:38 ` Alex Bennée [this message]
2020-06-09 10:38 ` [PULL 13/17] linux-user: detect overflow of MAP_FIXED mmap Alex Bennée
2020-06-09 10:38 ` [PULL 14/17] tests/docker: Remove flex/bison packages Alex Bennée
2020-06-09 10:38 ` [PULL 15/17] tests/vm: " Alex Bennée
2020-06-09 10:53 ` Claudio Fontana
2020-06-09 11:08 ` Alex Bennée
2020-06-09 10:38 ` [PULL 16/17] cirrus-ci: " Alex Bennée
2020-06-09 10:38 ` [PULL 17/17] scripts/coverity-scan: " Alex Bennée
2020-06-11 10:20 ` [PULL 00/17] testing and misc fixes Peter Maydell
-- strict thread matches above, loose matches on Subject: below --
2020-06-05 15:49 [PATCH v1 00/14] various fixes for next PR (testing, vhost, guest_base fixes) Alex Bennée
2020-06-05 15:49 ` [PATCH v1 01/14] qemu-plugin.h: add missing include <stddef.h> to define size_t Alex Bennée
2020-06-05 15:49 ` [PATCH v1 02/14] scripts/clean-includes: Mark 'qemu/qemu-plugin.h' as special header Alex Bennée
2020-06-05 15:49 ` [PATCH v1 03/14] tests/plugin: correctly honour io_count Alex Bennée
2020-06-05 15:49 ` [PATCH v1 04/14] exec: flush the whole TLB if a watchpoint crosses a page boundary Alex Bennée
2020-06-05 15:49 ` [PATCH v1 05/14] .travis.yml: allow failure for unreliable hosts Alex Bennée
2020-06-05 15:49 ` [PATCH v1 06/14] .shippable: temporaily disable some cross builds Alex Bennée
2020-06-05 16:12 ` Philippe Mathieu-Daudé
2020-06-05 15:49 ` [PATCH v1 07/14] iotests: 194: wait migration completion on target too Alex Bennée
2020-06-05 15:49 ` [PATCH v1 08/14] tests/docker: fix pre-requisite for debian-tricore-cross Alex Bennée
2020-06-05 15:49 ` [PATCH v1 09/14] docker: update Ubuntu to 20.04 Alex Bennée
2020-06-05 15:49 ` [PATCH v1 10/14] hw/virtio/vhost: re-factor vhost-section and allow DIRTY_MEMORY_CODE Alex Bennée
2020-06-05 15:49 ` [PATCH v1 11/14] linux-user: provide fallback pgd_find_hole for bare chroots Alex Bennée
2020-06-05 15:49 ` [PATCH v1 12/14] linux-user: deal with address wrap for ARM_COMMPAGE on 32 bit Alex Bennée
2020-06-05 15:49 ` [Bug 1880225] " Alex Bennée
2020-06-05 15:49 ` [PATCH v1 13/14] tests/tcg: add simple commpage test case Alex Bennée
2020-06-05 15:49 ` [PATCH v1 14/14] linux-user: detect overflow of MAP_FIXED mmap Alex Bennée
2020-06-05 16:16 ` Philippe Mathieu-Daudé
2020-06-05 15:54 ` [PATCH v1 00/14] various fixes for next PR (testing, vhost, guest_base fixes) Eric Blake
2020-06-05 17:46 ` no-reply
2020-06-07 6:55 ` Thomas Huth
2020-06-08 15:58 ` Alex Bennée
2020-05-27 10:05 [PATCH v1 0/3] some linux-user guest_base fixes Alex Bennée
2020-05-27 10:05 ` [PATCH v1 1/3] linux-user: provide fallback pgd_find_hole for bare chroots Alex Bennée
2020-06-02 0:37 ` Richard Henderson
2020-05-27 10:05 ` [PATCH v1 2/3] linux-user: deal with address wrap for ARM_COMMPAGE on 32 bit Alex Bennée
2020-05-27 10:05 ` [Bug 1880225] " Alex Bennée
2020-05-27 12:05 ` Aleksandar Markovic
2020-05-27 12:05 ` [Bug 1880225] " Aleksandar Markovic
2020-05-27 14:47 ` Aleksandar Markovic
2020-05-27 14:47 ` [Bug 1880225] " Aleksandar Markovic
2020-05-27 16:14 ` Alex Bennée
2020-05-27 16:14 ` [Bug 1880225] " Alex Bennée
2020-06-02 0:28 ` Richard Henderson
2020-06-05 9:45 ` Alex Bennée
2020-06-05 9:45 ` [Bug 1880225] " Alex Bennée
2020-06-05 10:24 ` Alex Bennée
2020-06-05 10:24 ` [Bug 1880225] " Alex Bennée
2020-05-27 10:05 ` [PATCH v1 3/3] tests/tcg: add simple commpage test case Alex Bennée
2020-06-02 0:40 ` Richard Henderson
2020-05-27 14:12 ` [PATCH v1 0/3] some linux-user guest_base fixes no-reply
2020-05-22 18:43 [Bug 1880225] [NEW] Emulation of some arm programs fail with "Assertion `have_guest_base' failed." Aleksandar Markovic
2020-05-22 19:18 ` Alex Bennée
2020-05-22 19:18 ` Alex Bennée
2020-05-22 19:27 ` [Bug 1880225] " Alex Bennée
2020-05-23 1:07 ` Aleksandar Markovic
2020-05-23 1:14 ` Aleksandar Markovic
2020-05-23 7:40 ` Alex Bennée
2020-05-23 7:40 ` Alex Bennée
2020-05-23 1:31 ` Aleksandar Markovic
2020-05-23 7:50 ` Alex Bennée
2020-05-23 7:52 ` Aleksandar Markovic
2020-05-23 10:14 ` Alex Bennée
2020-08-20 15:08 ` Thomas Huth
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