pthread_sigmask tests: More details about VirtualBox / KVM bug.

* tests/test-pthread_sigmask1.c (main): Refine comment regarding
VirtualBox / KVM bug.
* tests/test-pthread_sigmask2.c (main): Likewise.

diff --git a/ChangeLog b/ChangeLog
index fb6babd1ff97628d10a957d645681321a27c72fb..4bef6f5975ca64cad27d20bfd8eb422ebbcb5d14 100644 (file)
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,10 @@
+2026-04-15  Bruno Haible  <bruno@clisp.org>
+
+       pthread_sigmask tests: More details about VirtualBox / KVM bug.
+       * tests/test-pthread_sigmask1.c (main): Refine comment regarding
+       VirtualBox / KVM bug.
+       * tests/test-pthread_sigmask2.c (main): Likewise.
+
 2026-04-14  Bruno Haible  <bruno@clisp.org>
 
        sigprocmask: On mingw, avoid dependency on libwinpthread.

diff --git a/tests/test-pthread_sigmask1.c b/tests/test-pthread_sigmask1.c
index d97e75d27a2f740369de67b5b3593ada69126b4a..e088eb61eabc66df41a351e24adfe49f7fca898b 100644 (file)
--- a/tests/test-pthread_sigmask1.c
+++ b/tests/test-pthread_sigmask1.c
@@ -46,7 +46,8 @@ int
 main ()
 {
   /* This test occasionally fails on Linux (glibc or musl libc), in a
-     VirtualBox VM with paravirtualization = Default or KVM, with ≥ 2 CPUs.
+     VirtualBox VM with paravirtualization = Default or KVM, with ≥ 2 CPUs,
+     when "Nested VT-x/AMD-V" and "PAE/NX" are not both enabled.
      Skip the test in this situation.  */
   if (is_running_under_virtualbox_kvm () && num_cpus () > 1)
     {

diff --git a/tests/test-pthread_sigmask2.c b/tests/test-pthread_sigmask2.c
index 7c71984ac62e8c90d6a6bd7dc974fd5f7dff33f0..c4b6c1af449ad8c34ca248fd8f479ae57e8903e6 100644 (file)
--- a/tests/test-pthread_sigmask2.c
+++ b/tests/test-pthread_sigmask2.c
@@ -53,7 +53,8 @@ int
 main ()
 {
   /* This test occasionally fails on Linux (glibc or musl libc), in a
-     VirtualBox VM with paravirtualization = Default or KVM, with ≥ 2 CPUs.
+     VirtualBox VM with paravirtualization = Default or KVM, with ≥ 2 CPUs,
+     when "Nested VT-x/AMD-V" and "PAE/NX" are not both enabled.
      Skip the test in this situation.  */
   if (is_running_under_virtualbox_kvm () && num_cpus () > 1)
     {