Merge tag 'linux-user-for-7.2-pull-request' of https://gitlab.com/laurent_vivier/qemu into staging

linux-user pull request 20220928-v2

use 'max' instead of 'qemu32' / 'qemu64'
add  pidfd_open(), pidfd_send_signal() and pidfd_getfd()
Improve madvise(MADV_DONTNEED)
futex syscal rework
strace improvement
HP/PA fixes and improvement
Misc fixes

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# gpg:                using RSA key CD2F75DDC8E3A4DC2E4F5173F30C38BD3F2FBE3C
# gpg:                issuer "laurent@vivier.eu"
# gpg: Good signature from "Laurent Vivier <lvivier@redhat.com>" [full]
# gpg:                 aka "Laurent Vivier <laurent@vivier.eu>" [full]
# gpg:                 aka "Laurent Vivier (Red Hat) <lvivier@redhat.com>" [full]
# Primary key fingerprint: CD2F 75DD C8E3 A4DC 2E4F  5173 F30C 38BD 3F2F BE3C

* tag 'linux-user-for-7.2-pull-request' of https://gitlab.com/laurent_vivier/qemu: (37 commits)
  linux-user: Add parameters of getrandom() syscall for strace
  linux-user: Lock log around strace
  linux-user: Update print_futex_op
  linux-user: Implement PI futexes
  linux-user: Convert signal number for FUTEX_FD
  linux-user: Implement FUTEX_WAKE_BITSET
  linux-user: Sink call to do_safe_futex
  linux-user: Combine do_futex and do_futex_time64
  linux-user: Set ELF_BASE_PLATFORM for MIPS
  linux-user: Introduce stubs for ELF AT_BASE_PLATFORM
  linux-user/s390x: Save/restore fpc when handling a signal
  linux-user: Don't assume 0 is not a valid host timer_t value
  linux-user: fix bug about missing signum convert of sigqueue
  linux-user/hppa: Fix setup_sigcontext()
  linux-user/hppa: Allow PROT_GROWSUP and PROT_GROWSDOWN in mprotect()
  linux-user/hppa: Increase guest stack size to 80MB for hppa target
  linux-user/hppa: Drop stack guard page on hppa target
  linux-user/hppa: Add signal trampoline for hppa target
  linux-user: Add proper strace format strings for getdents()/getdents64()
  linux-user: Fix TARGET_PROT_SEM for XTENSA
  ...

Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>

1 files changed, 70 insertions, 0 deletions

diff --git a/tests/tcg/multiarch/linux/linux-madvise.c b/tests/tcg/multiarch/linux/linux-madvise.c
new file mode 100644
index 0000000000..29d0997e68
--- /dev/null
+++ b/tests/tcg/multiarch/linux/linux-madvise.c
@@ -0,0 +1,70 @@
+#include <assert.h>
+#include <stdlib.h>
+#include <sys/mman.h>
+#include <unistd.h>
+
+static void test_anonymous(void)
+{
+    int pagesize = getpagesize();
+    char *page;
+    int ret;
+
+    page = mmap(NULL, pagesize, PROT_READ, MAP_ANONYMOUS | MAP_PRIVATE, -1, 0);
+    assert(page != MAP_FAILED);
+
+    /* Check that mprotect() does not interfere with MADV_DONTNEED. */
+    ret = mprotect(page, pagesize, PROT_READ | PROT_WRITE);
+    assert(ret == 0);
+
+    /* Check that MADV_DONTNEED clears the page. */
+    *page = 42;
+    ret = madvise(page, pagesize, MADV_DONTNEED);
+    assert(ret == 0);
+    assert(*page == 0);
+
+    ret = munmap(page, pagesize);
+    assert(ret == 0);
+}
+
+static void test_file(void)
+{
+    char tempname[] = "/tmp/.cmadviseXXXXXX";
+    int pagesize = getpagesize();
+    ssize_t written;
+    char c = 42;
+    char *page;
+    int ret;
+    int fd;
+
+    fd = mkstemp(tempname);
+    assert(fd != -1);
+    ret = unlink(tempname);
+    assert(ret == 0);
+    written = write(fd, &c, sizeof(c));
+    assert(written == sizeof(c));
+    page = mmap(NULL, pagesize, PROT_READ, MAP_PRIVATE, fd, 0);
+    assert(page != MAP_FAILED);
+
+    /* Check that mprotect() does not interfere with MADV_DONTNEED. */
+    ret = mprotect(page, pagesize, PROT_READ | PROT_WRITE);
+    assert(ret == 0);
+
+    /* Check that MADV_DONTNEED resets the page. */
+    *page = 0;
+    ret = madvise(page, pagesize, MADV_DONTNEED);
+    assert(ret == 0);
+    assert(*page == c);
+
+    ret = munmap(page, pagesize);
+    assert(ret == 0);
+    ret = close(fd);
+    assert(ret == 0);
+}
+
+int main(void)
+{
+    test_anonymous();
+    test_file();
+
+    return EXIT_SUCCESS;
+}