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[PATCH v1] xen/x86: move domctl.o out of PV_SHIM_EXCLUSIVE


  • To: <xen-devel@xxxxxxxxxxxxxxxxxxxx>, <stefano.stabellini@xxxxxxx>
  • From: Penny Zheng <Penny.Zheng@xxxxxxx>
  • Date: Fri, 25 Jul 2025 14:30:39 +0800
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  • Cc: Penny Zheng <Penny.Zheng@xxxxxxx>, Jan Beulich <jbeulich@xxxxxxxx>, "Andrew Cooper" <andrew.cooper3@xxxxxxxxxx>, Roger Pau Monné <roger.pau@xxxxxxxxxx>, Anthony PERARD <anthony.perard@xxxxxxxxxx>, "Michal Orzel" <michal.orzel@xxxxxxx>, Julien Grall <julien@xxxxxxx>, "Stefano Stabellini" <sstabellini@xxxxxxxxxx>
  • Delivery-date: Fri, 25 Jul 2025 06:31:14 +0000
  • List-id: Xen developer discussion <xen-devel.lists.xenproject.org>

In order to fix CI error of a randconfig picking both PV_SHIM_EXCLUSIVE=y and
HVM=y results in hvm.c being built, but domctl.c not being built, which leaves
a few functions, like domctl_lock_acquire/release() undefined, causing linking
to fail.
To fix that, we intend to move domctl.o out of the PV_SHIM_EXCLUSIVE Makefile
/hypercall-defs section, with this adjustment, we also need to remove
redundant vnuma_destroy() stub definition to not break compilation.
Above change will leave dead code in the shim binary temporarily and will be
fixed with the introduction of CONFIG_DOMCTL.

Fixes: 568f806cba4c ("xen/x86: remove "depends on !PV_SHIM_EXCLUSIVE"")
Reported-by: Jan Beulich <jbeulich@xxxxxxxx>
Signed-off-by: Penny Zheng <Penny.Zheng@xxxxxxx>
---
 xen/arch/x86/Makefile        | 2 +-
 xen/common/Makefile          | 5 +----
 xen/include/hypercall-defs.c | 4 +---
 xen/include/xen/domain.h     | 4 ----
 4 files changed, 3 insertions(+), 12 deletions(-)

diff --git a/xen/arch/x86/Makefile b/xen/arch/x86/Makefile
index 5aab30a0c4..7676d7cdd8 100644
--- a/xen/arch/x86/Makefile
+++ b/xen/arch/x86/Makefile
@@ -28,6 +28,7 @@ obj-y += delay.o
 obj-y += desc.o
 obj-bin-y += dmi_scan.init.o
 obj-y += domain.o
+obj-y += domctl.o
 obj-bin-y += dom0_build.init.o
 obj-y += domain_page.o
 obj-y += e820.o
@@ -79,7 +80,6 @@ obj-y += vm_event.o
 obj-y += xstate.o
 
 ifneq ($(CONFIG_PV_SHIM_EXCLUSIVE),y)
-obj-y += domctl.o
 obj-y += platform_hypercall.o
 obj-$(CONFIG_COMPAT) += x86_64/platform_hypercall.o
 endif
diff --git a/xen/common/Makefile b/xen/common/Makefile
index c316957fcb..756ddf52c3 100644
--- a/xen/common/Makefile
+++ b/xen/common/Makefile
@@ -11,6 +11,7 @@ obj-$(filter-out $(CONFIG_X86),$(CONFIG_ACPI)) += device.o
 obj-$(CONFIG_DEVICE_TREE_PARSE) += device-tree/
 obj-$(CONFIG_IOREQ_SERVER) += dm.o
 obj-y += domain.o
+obj-y += domctl.o
 obj-y += event_2l.o
 obj-y += event_channel.o
 obj-$(CONFIG_EVTCHN_FIFO) += event_fifo.o
@@ -69,10 +70,6 @@ obj-bin-$(CONFIG_X86) += $(foreach n,decompress bunzip2 unxz 
unlzma lzo unlzo un
 
 obj-$(CONFIG_COMPAT) += $(addprefix compat/,domain.o memory.o multicall.o 
xlat.o)
 
-ifneq ($(CONFIG_PV_SHIM_EXCLUSIVE),y)
-obj-y += domctl.o
-endif
-
 extra-y := symbols-dummy.o
 
 obj-$(CONFIG_COVERAGE) += coverage/
diff --git a/xen/include/hypercall-defs.c b/xen/include/hypercall-defs.c
index c1081d87a2..e1f6d25b4a 100644
--- a/xen/include/hypercall-defs.c
+++ b/xen/include/hypercall-defs.c
@@ -197,8 +197,8 @@ dm_op(domid_t domid, unsigned int nr_bufs, xen_dm_op_buf_t 
*bufs)
 #ifdef CONFIG_SYSCTL
 sysctl(xen_sysctl_t *u_sysctl)
 #endif
-#ifndef CONFIG_PV_SHIM_EXCLUSIVE
 domctl(xen_domctl_t *u_domctl)
+#ifndef CONFIG_PV_SHIM_EXCLUSIVE
 paging_domctl_cont(xen_domctl_t *u_domctl)
 platform_op(xen_platform_op_t *u_xenpf_op)
 #endif
@@ -278,9 +278,7 @@ hvm_op                             do       do       do     
  do       do
 #ifdef CONFIG_SYSCTL
 sysctl                             do       do       do       do       do
 #endif
-#ifndef CONFIG_PV_SHIM_EXCLUSIVE
 domctl                             do       do       do       do       do
-#endif
 #ifdef CONFIG_KEXEC
 kexec_op                           compat   do       -        -        -
 #endif
diff --git a/xen/include/xen/domain.h b/xen/include/xen/domain.h
index e10baf2615..33dd90357c 100644
--- a/xen/include/xen/domain.h
+++ b/xen/include/xen/domain.h
@@ -182,11 +182,7 @@ struct vnuma_info {
     struct xen_vmemrange *vmemrange;
 };
 
-#ifndef CONFIG_PV_SHIM_EXCLUSIVE
 void vnuma_destroy(struct vnuma_info *vnuma);
-#else
-static inline void vnuma_destroy(struct vnuma_info *vnuma) { ASSERT(!vnuma); }
-#endif
 
 extern bool vmtrace_available;
 
-- 
2.34.1




 


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