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Linux-user pull request 20210621

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Merge remote-tracking branch 'remotes/vivier2/tags/linux-user-for-6.1-pull-request' into staging

Linux-user pull request 20210621

# gpg: Signature made Mon 21 Jun 2021 12:03:53 BST
# 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

* remotes/vivier2/tags/linux-user-for-6.1-pull-request:
  linux-user: Use public sigev_notify_thread_id member if available
  linux-user: Fix incorrect use of feature-test-macros
  linux-user: Check for ieee128 fpbits in PPC64 HWCAP2 feature list
  tests/tcg/linux-test: Check that sigaction can query SIGKILL/SIGSTOP
  linux-user: Let sigaction query SIGKILL/SIGSTOP
  linux-user: Implement pivot_root
  linux-user/trace-events: fix minor typo in format string
  linux-user: Disable static assert involving __SIGRTMAX if it is missing
  linux-user: Set CF_PARALLEL when mapping shared memory

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
This commit is contained in:
Peter Maydell 2021-06-22 16:07:53 +01:00
commit b22726abdf
7 changed files with 89 additions and 8 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

16
configure vendored
View File

@ -4440,6 +4440,19 @@ if compile_prog "" "" ; then
st_atim=yes
fi
##########################################
# check if we have sigev_notify_thread_id
sigev_notify_thread_id=no
cat > $TMPC << EOF
#include <stddef.h>
#include <signal.h>
int main(void) { return offsetof(struct sigevent, sigev_notify_thread_id); }
EOF
if compile_prog "" "" ; then
sigev_notify_thread_id=yes
fi
##########################################
# check if trace backend exists
@ -5678,6 +5691,9 @@ fi
if test "$st_atim" = "yes" ; then
echo "HAVE_STRUCT_STAT_ST_ATIM=y" >> $config_host_mak
fi
if test "$sigev_notify_thread_id" = "yes" ; then
echo "HAVE_SIGEV_NOTIFY_THREAD_ID=y" >> $config_host_mak
fi
if test "$byteswap_h" = "yes" ; then
echo "CONFIG_BYTESWAP_H=y" >> $config_host_mak
fi

2
linux-user/elfload.c
View File

@ -830,7 +830,7 @@ static uint32_t get_elf_hwcap2(void)
PPC2_ISA207S), QEMU_PPC_FEATURE2_ARCH_2_07 |
QEMU_PPC_FEATURE2_VEC_CRYPTO);
GET_FEATURE2(PPC2_ISA300, QEMU_PPC_FEATURE2_ARCH_3_00 |
QEMU_PPC_FEATURE2_DARN);
QEMU_PPC_FEATURE2_DARN | QEMU_PPC_FEATURE2_HAS_IEEE128);
#undef GET_FEATURE
#undef GET_FEATURE2

14
linux-user/mmap.c
View File

@ -451,6 +451,20 @@ abi_long target_mmap(abi_ulong start, abi_ulong len, int target_prot,
goto fail;
}
/*
* If we're mapping shared memory, ensure we generate code for parallel
* execution and flush old translations. This will work up to the level
* supported by the host -- anything that requires EXCP_ATOMIC will not
* be atomic with respect to an external process.
*/
if (flags & MAP_SHARED) {
CPUState *cpu = thread_cpu;
if (!(cpu->tcg_cflags & CF_PARALLEL)) {
cpu->tcg_cflags |= CF_PARALLEL;
tb_flush(cpu);
}
}
real_start = start & qemu_host_page_mask;
host_offset = offset & qemu_host_page_mask;

8
linux-user/signal.c
View File

@ -38,7 +38,9 @@ static void host_signal_handler(int host_signum, siginfo_t *info,
* Signal number 0 is reserved for use as kill(pid, 0), to test whether
* a process exists without sending it a signal.
*/
#ifdef __SIGRTMAX
QEMU_BUILD_BUG_ON(__SIGRTMAX + 1 != _NSIG);
#endif
static uint8_t host_to_target_signal_table[_NSIG] = {
[SIGHUP] = TARGET_SIGHUP,
[SIGINT] = TARGET_SIGINT,
@ -851,7 +853,11 @@ int do_sigaction(int sig, const struct target_sigaction *act,
trace_signal_do_sigaction_guest(sig, TARGET_NSIG);
if (sig < 1 || sig > TARGET_NSIG || sig == TARGET_SIGKILL || sig == TARGET_SIGSTOP) {
if (sig < 1 || sig > TARGET_NSIG) {
return -TARGET_EINVAL;
}
if (act && (sig == TARGET_SIGKILL || sig == TARGET_SIGSTOP)) {
return -TARGET_EINVAL;
}

46
linux-user/syscall.c
View File

@ -4603,6 +4603,7 @@ static inline abi_ulong target_shmlba(CPUArchState *cpu_env)
static inline abi_ulong do_shmat(CPUArchState *cpu_env,
int shmid, abi_ulong shmaddr, int shmflg)
{
CPUState *cpu = env_cpu(cpu_env);
abi_long raddr;
void *host_raddr;
struct shmid_ds shm_info;
@ -4633,6 +4634,17 @@ static inline abi_ulong do_shmat(CPUArchState *cpu_env,
mmap_lock();
/*
* We're mapping shared memory, so ensure we generate code for parallel
* execution and flush old translations. This will work up to the level
* supported by the host -- anything that requires EXCP_ATOMIC will not
* be atomic with respect to an external process.
*/
if (!(cpu->tcg_cflags & CF_PARALLEL)) {
cpu->tcg_cflags |= CF_PARALLEL;
tb_flush(cpu);
}
if (shmaddr)
host_raddr = shmat(shmid, (void *)g2h_untagged(shmaddr), shmflg);
else {
@ -7393,6 +7405,10 @@ static inline abi_long host_to_target_timex64(abi_long target_addr,
}
#endif
#ifndef HAVE_SIGEV_NOTIFY_THREAD_ID
#define sigev_notify_thread_id _sigev_un._tid
#endif
static inline abi_long target_to_host_sigevent(struct sigevent *host_sevp,
abi_ulong target_addr)
{
@ -7413,7 +7429,7 @@ static inline abi_long target_to_host_sigevent(struct sigevent *host_sevp,
host_sevp->sigev_signo =
target_to_host_signal(tswap32(target_sevp->sigev_signo));
host_sevp->sigev_notify = tswap32(target_sevp->sigev_notify);
host_sevp->_sigev_un._tid = tswap32(target_sevp->_sigev_un._tid);
host_sevp->sigev_notify_thread_id = tswap32(target_sevp->_sigev_un._tid);
unlock_user_struct(target_sevp, target_addr, 1);
return 0;
@ -7470,7 +7486,7 @@ static inline abi_long host_to_target_stat64(void *cpu_env,
__put_user(host_st->st_atime, &target_st->target_st_atime);
__put_user(host_st->st_mtime, &target_st->target_st_mtime);
__put_user(host_st->st_ctime, &target_st->target_st_ctime);
#if _POSIX_C_SOURCE >= 200809L || _XOPEN_SOURCE >= 700
#ifdef HAVE_STRUCT_STAT_ST_ATIM
__put_user(host_st->st_atim.tv_nsec, &target_st->target_st_atime_nsec);
__put_user(host_st->st_mtim.tv_nsec, &target_st->target_st_mtime_nsec);
__put_user(host_st->st_ctim.tv_nsec, &target_st->target_st_ctime_nsec);
@ -7505,7 +7521,7 @@ static inline abi_long host_to_target_stat64(void *cpu_env,
__put_user(host_st->st_atime, &target_st->target_st_atime);
__put_user(host_st->st_mtime, &target_st->target_st_mtime);
__put_user(host_st->st_ctime, &target_st->target_st_ctime);
#if _POSIX_C_SOURCE >= 200809L || _XOPEN_SOURCE >= 700
#ifdef HAVE_STRUCT_STAT_ST_ATIM
__put_user(host_st->st_atim.tv_nsec, &target_st->target_st_atime_nsec);
__put_user(host_st->st_mtim.tv_nsec, &target_st->target_st_mtime_nsec);
__put_user(host_st->st_ctim.tv_nsec, &target_st->target_st_ctime_nsec);
@ -8245,6 +8261,10 @@ static int host_to_target_cpu_mask(const unsigned long *host_mask,
return 0;
}
#if defined(TARGET_NR_pivot_root) && defined(__NR_pivot_root)
_syscall2(int, pivot_root, const char *, new_root, const char *, put_old)
#endif
/* This is an internal helper for do_syscall so that it is easier
* to have a single return point, so that actions, such as logging
* of syscall results, can be performed.
@ -10056,8 +10076,7 @@ static abi_long do_syscall1(void *cpu_env, int num, abi_long arg1,
__put_user(st.st_atime, &target_st->target_st_atime);
__put_user(st.st_mtime, &target_st->target_st_mtime);
__put_user(st.st_ctime, &target_st->target_st_ctime);
#if (_POSIX_C_SOURCE >= 200809L || _XOPEN_SOURCE >= 700) && \
defined(TARGET_STAT_HAVE_NSEC)
#if defined(HAVE_STRUCT_STAT_ST_ATIM) && defined(TARGET_STAT_HAVE_NSEC)
__put_user(st.st_atim.tv_nsec,
&target_st->target_st_atime_nsec);
__put_user(st.st_mtim.tv_nsec,
@ -13208,6 +13227,23 @@ static abi_long do_syscall1(void *cpu_env, int num, abi_long arg1,
return ret;
#endif
#if defined(TARGET_NR_pivot_root)
case TARGET_NR_pivot_root:
{
void *p2;
p = lock_user_string(arg1); /* new_root */
p2 = lock_user_string(arg2); /* put_old */
if (!p || !p2) {
ret = -TARGET_EFAULT;
} else {
ret = get_errno(pivot_root(p, p2));
}
unlock_user(p2, arg2, 0);
unlock_user(p, arg1, 0);
}
return ret;
#endif
default:
qemu_log_mask(LOG_UNIMP, "Unsupported syscall: %d\n", num);
return -TARGET_ENOSYS;

2
linux-user/trace-events
View File

@ -11,7 +11,7 @@ user_do_rt_sigreturn(void *env, uint64_t frame_addr) "env=%p frame_addr=0x%"PRIx
user_do_sigreturn(void *env, uint64_t frame_addr) "env=%p frame_addr=0x%"PRIx64
user_force_sig(void *env, int target_sig, int host_sig) "env=%p signal %d (host %d)"
user_handle_signal(void *env, int target_sig) "env=%p signal %d"
user_host_signal(void *env, int host_sig, int target_sig) "env=%p signal %d (target %d("
user_host_signal(void *env, int host_sig, int target_sig) "env=%p signal %d (target %d)"
user_queue_signal(void *env, int target_sig) "env=%p signal %d"
user_s390x_restore_sigregs(void *env, uint64_t sc_psw_addr, uint64_t env_psw_addr) "env=%p frame psw.addr 0x%"PRIx64 " current psw.addr 0x%"PRIx64

9
tests/tcg/multiarch/linux-test.c
View File

@ -496,6 +496,15 @@ static void test_signal(void)
sigemptyset(&act.sa_mask);
act.sa_flags = 0;
chk_error(sigaction(SIGSEGV, &act, NULL));
if (sigaction(SIGKILL, &act, NULL) == 0) {
error("sigaction(SIGKILL, &act, NULL) must not succeed");
}
if (sigaction(SIGSTOP, &act, NULL) == 0) {
error("sigaction(SIGSTOP, &act, NULL) must not succeed");
}
chk_error(sigaction(SIGKILL, NULL, &act));
chk_error(sigaction(SIGSTOP, NULL, &act));
}
#define SHM_SIZE 32768