[OS-BUILD PATCHv2] redhat: switch the vsyscall config to CONFIG_LEGACY_VSYSCALL_XONLY=y

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From: Herton R. Krzesinski <herton@xxxxxxxxxx>

redhat: switch the vsyscall config to CONFIG_LEGACY_VSYSCALL_XONLY=y

Bugzilla: https://bugzilla.redhat.com/show_bug.cgi?id=1876977

As discussed upstream eg. at https://lore.kernel.org/linux-api/87h7bzjaer.fsf@xxxxxxxxxxxxxxxxxxxxxxxx/T/
and pointed on the bug's description above, VSYSCALL_XONLY is more
secure while still maintaining useful backward compatibility.

We also plan to do this change on the RHEL side with a centos-stream-9
change, so the change here covers both Fedora and RHEL/CentOS.

v2: move the CONFIG_LEGACY_VSYSCALL* files to the x86 directory, as they
are x86 only settings, as reported/suggested by Waiman Long.

Signed-off-by: Herton R. Krzesinski <herton@xxxxxxxxxx>

diff --git a/redhat/configs/common/generic/CONFIG_LEGACY_VSYSCALL_EMULATE b/redhat/configs/common/generic/CONFIG_LEGACY_VSYSCALL_EMULATE
deleted file mode 100644
index blahblah..blahblah 0
--- a/redhat/configs/common/generic/CONFIG_LEGACY_VSYSCALL_EMULATE
+++ /dev/null
@@ -1 +0,0 @@
-CONFIG_LEGACY_VSYSCALL_EMULATE=y
diff --git a/redhat/configs/common/generic/CONFIG_LEGACY_VSYSCALL_XONLY b/redhat/configs/common/generic/CONFIG_LEGACY_VSYSCALL_XONLY
deleted file mode 100644
index blahblah..blahblah 0
--- a/redhat/configs/common/generic/CONFIG_LEGACY_VSYSCALL_XONLY
+++ /dev/null
@@ -1 +0,0 @@
-# CONFIG_LEGACY_VSYSCALL_XONLY is not set
diff --git a/redhat/configs/common/generic/x86/CONFIG_LEGACY_VSYSCALL_EMULATE b/redhat/configs/common/generic/x86/CONFIG_LEGACY_VSYSCALL_EMULATE
new file mode 100644
index blahblah..blahblah 100644
--- /dev/null
+++ b/redhat/configs/common/generic/x86/CONFIG_LEGACY_VSYSCALL_EMULATE
@@ -0,0 +1 @@
+# CONFIG_LEGACY_VSYSCALL_EMULATE is not set
diff --git a/redhat/configs/common/generic/CONFIG_LEGACY_VSYSCALL_NONE b/redhat/configs/common/generic/x86/CONFIG_LEGACY_VSYSCALL_NONE
rename from redhat/configs/common/generic/CONFIG_LEGACY_VSYSCALL_NONE
rename to redhat/configs/common/generic/x86/CONFIG_LEGACY_VSYSCALL_NONE
index blahblah..blahblah 100644
--- a/redhat/configs/common/generic/CONFIG_LEGACY_VSYSCALL_NONE
+++ b/redhat/configs/common/generic/x86/CONFIG_LEGACY_VSYSCALL_NONE
diff --git a/redhat/configs/common/generic/x86/CONFIG_LEGACY_VSYSCALL_XONLY b/redhat/configs/common/generic/x86/CONFIG_LEGACY_VSYSCALL_XONLY
new file mode 100644
index blahblah..blahblah 100644
--- /dev/null
+++ b/redhat/configs/common/generic/x86/CONFIG_LEGACY_VSYSCALL_XONLY
@@ -0,0 +1 @@
+CONFIG_LEGACY_VSYSCALL_XONLY=y

--
https://gitlab.com/cki-project/kernel-ark/-/merge_requests/1531
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