x86/shim: Fix defconfig selection and trim the build further

Several options (TBOOT, XENOPROF, Scheduler) depend on EXPERT to be able to
deselect/configure.

Enabling EXPERT now causes the request of the Credit1 scheduler to be honoured
(rather than giving us Credit2), but take this opportunity to switch to Null,
as the previously problematic issues are now believed to be fixed.

Enabling EXPERT also allows XEN_SHSTK to be selected, and we don't want this
being built for shim.  We also don't want TRACEBUFFER or GDBSX either.

Take this oppotunity to swap the disable of HVM_FEP for a general disable of
HVM (likely to have wider impliciations in the future), and disable ARGO (will
necesserily need plumbing work to function in shim).

Signed-off-by: Andrew Cooper <andrew.cooper3@citrix.com>
Reviewed-by: Jan Beulich <jbeulich@suse.com>
Release-acked-by: Paul Durrant <paul@xen.org>

diff --git a/xen/arch/x86/configs/pvshim_defconfig b/xen/arch/x86/configs/pvshim_defconfig
index 830660e022d4932bf998c2d7f85bd82a70181ae4..3af48d6c0680f4dc42af5a5f3764d479f25d600e 100644 (file)
--- a/xen/arch/x86/configs/pvshim_defconfig
+++ b/xen/arch/x86/configs/pvshim_defconfig
@@ -5,19 +5,25 @@ CONFIG_PVH_GUEST=y
 CONFIG_PV_SHIM=y
 CONFIG_PV_SHIM_EXCLUSIVE=y
 CONFIG_NR_CPUS=32
+CONFIG_EXPERT=y
+CONFIG_SCHED_NULL=y
 # Disable features not used by the PV shim
+# CONFIG_HVM is not set
+# CONFIG_XEN_SHSTK is not set
 # CONFIG_HYPFS is not set
 # CONFIG_SHADOW_PAGING is not set
 # CONFIG_BIGMEM is not set
-# CONFIG_HVM_FEP is not set
 # CONFIG_TBOOT is not set
 # CONFIG_KEXEC is not set
 # CONFIG_XENOPROF is not set
 # CONFIG_XSM is not set
+# CONFIG_ARGO is not set
+# CONFIG_SCHED_CREDIT is not set
 # CONFIG_SCHED_CREDIT2 is not set
 # CONFIG_SCHED_RTDS is not set
 # CONFIG_SCHED_ARINC653 is not set
-# CONFIG_SCHED_NULL is not set
 # CONFIG_LIVEPATCH is not set
 # CONFIG_SUPPRESS_DUPLICATE_SYMBOL_WARNINGS is not set
+# CONFIG_TRACEBUFFER is not set
 # CONFIG_DEBUG is not set
+# CONFIG_GDBSX is not set