Merge remote-tracking branch 'remotes/vivier/tags/linux-user-for-6.2-pull-request' into staging

Pull request linux-user 20211004

Move signal trampolines to new page

# gpg: Signature made Mon 04 Oct 2021 12:43:53 AM PDT
# 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]

* remotes/vivier/tags/linux-user-for-6.2-pull-request: (26 commits)
  tests/tcg/multiarch: Re-enable signals test for most guests
  linux-user: Remove default for TARGET_ARCH_HAS_SIGTRAMP_PAGE
  linux-user/xtensa: Implement setup_sigtramp
  linux-user/sparc: Implement setup_sigtramp
  linux-user/sh4: Implement setup_sigtramp
  linux-user/s390x: Implement setup_sigtramp
  linux-user/riscv: Implement setup_sigtramp
  linux-user/ppc: Implement setup_sigtramp
  linux-user/ppc: Simplify encode_trampoline
  linux-user/openrisc: Implement setup_sigtramp
  linux-user/nios2: Document non-use of setup_sigtramp
  linux-user/mips: Implement setup_sigtramp
  linux-user/mips: Tidy install_sigtramp
  linux-user/microblaze: Implement setup_sigtramp
  linux-user/m68k: Implement setup_sigtramp
  linux-user/x86_64: Raise SIGSEGV if SA_RESTORER not set
  linux-user/i386: Implement setup_sigtramp
  linux-user/hppa: Document non-use of setup_sigtramp
  linux-user/hexagon: Implement setup_sigtramp
  linux-user/cris: Implement setup_sigtramp
  ...

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>

4 files changed, 14 insertions, 11 deletions

diff --git a/tests/tcg/hppa/Makefile.target b/tests/tcg/hppa/Makefile.target
index 473864d1d4..d0d5e0e257 100644
--- a/tests/tcg/hppa/Makefile.target
+++ b/tests/tcg/hppa/Makefile.target
@@ -5,3 +5,10 @@
 # On parisc Linux supports 4K/16K/64K (but currently only 4k works)
 EXTRA_RUNS+=run-test-mmap-4096 # run-test-mmap-16384 run-test-mmap-65536
 
+# This triggers failures for hppa-linux about 1% of the time
+# HPPA is the odd target that can't use the sigtramp page;
+# it requires the full vdso with dwarf2 unwind info.
+run-signals: signals
+	$(call skip-test, $<, "BROKEN awaiting vdso support")
+run-plugin-signals-with-%:
+	$(call skip-test, $<, "BROKEN awaiting vdso support")
diff --git a/tests/tcg/i386/Makefile.target b/tests/tcg/i386/Makefile.target
index a053ca3f15..38c10379af 100644
--- a/tests/tcg/i386/Makefile.target
+++ b/tests/tcg/i386/Makefile.target
@@ -65,9 +65,6 @@ run-plugin-%-with-libinsn.so:
 	       -d plugin -D $*-with-libinsn.so.pout $*, \
 		"$* (inline) on $(TARGET_NAME)")
 
-run-plugin-signals-with-libinsn.so:
-	$(call skip-test, $<, "BROKEN awaiting sigframe clean-ups and vdso support")
-
 # Update TESTS
 I386_TESTS:=$(filter-out $(SKIP_I386_TESTS), $(ALL_X86_TESTS))
 TESTS=$(MULTIARCH_TESTS) $(I386_TESTS)
diff --git a/tests/tcg/multiarch/Makefile.target b/tests/tcg/multiarch/Makefile.target
index 85a6fb7a2e..3f283eabe6 100644
--- a/tests/tcg/multiarch/Makefile.target
+++ b/tests/tcg/multiarch/Makefile.target
@@ -32,14 +32,6 @@ threadcount: LDFLAGS+=-lpthread
 
 signals: LDFLAGS+=-lrt -lpthread
 
-# This triggers failures on s390x hosts about 4% of the time
-# This triggers failures for hppa-linux about 1% of the time
-run-signals: signals
-	$(call skip-test, $<, "BROKEN awaiting sigframe clean-ups and vdso support")
-
-run-plugin-signals-with-%:
-	$(call skip-test, $<, "BROKEN awaiting sigframe clean-ups and vdso support")
-
 # We define the runner for test-mmap after the individual
 # architectures have defined their supported pages sizes. If no
 # additional page sizes are defined we only run the default test.
diff --git a/tests/tcg/sh4/Makefile.target b/tests/tcg/sh4/Makefile.target
index 9d18d44612..47c39a44b6 100644
--- a/tests/tcg/sh4/Makefile.target
+++ b/tests/tcg/sh4/Makefile.target
@@ -5,3 +5,10 @@
 
 # On sh Linux supports 4k, 8k, 16k and 64k pages (but only 4k currently works)
 EXTRA_RUNS+=run-test-mmap-4096 # run-test-mmap-8192 run-test-mmap-16384 run-test-mmap-65536
+
+# This triggers failures for sh4-linux about 10% of the time.
+# Random SIGSEGV at unpredictable guest address, cause unknown.
+run-signals: signals
+	$(call skip-test, $<, "BROKEN")
+run-plugin-signals-with-%:
+	$(call skip-test, $<, "BROKEN")