xen: Don't build libelf for Arm

Now that ELF support has been dropped to boot Dom0, no-one is using
libelf within the hypervisor.

Introduce a config option to select libelf on x86 and keep unselected
for Arm.

Signed-off-by: Julien Grall <julien.grall@arm.com>
Reviewed-by: Stefano Stabellini <sstabellini@kernel.org>
Acked-by: Jan Beulich <jbeulich@suse.com>

diff --git a/xen/arch/x86/Kconfig b/xen/arch/x86/Kconfig
index f64fc567395fbd66376a64947a36dea0152b2123..c75f0526d8224e768a2f5370a5662fdd7372534c 100644 (file)
--- a/xen/arch/x86/Kconfig
+++ b/xen/arch/x86/Kconfig
@@ -24,6 +24,7 @@ config X86
        select HAS_PDX
        select HAS_UBSAN
        select HAS_VPCI if !PV_SHIM_EXCLUSIVE
+       select NEEDS_LIBELF
        select NUMA
 
 config ARCH_DEFCONFIG

diff --git a/xen/common/Kconfig b/xen/common/Kconfig
index 9043dce9377ba9e4a3d6aa7365e2c461007f6dc3..d4c0951a24461ce2bba5df8bff3918b1e1991350 100644 (file)
--- a/xen/common/Kconfig
+++ b/xen/common/Kconfig
@@ -44,6 +44,9 @@ config HAS_GDBSX
 config HAS_IOPORTS
        bool
 
+config NEEDS_LIBELF
+       bool
+
 config NEEDS_LIST_SORT
        bool
 

diff --git a/xen/common/Makefile b/xen/common/Makefile
index 24d4752ccc55662f686664d6539e85364ce642e4..b3e0b0ebf4d84937d35475f60470740ff864193a 100644 (file)
--- a/xen/common/Makefile
+++ b/xen/common/Makefile
@@ -78,5 +78,5 @@ obj-$(CONFIG_TMEM) += $(tmem-y)
 subdir-$(CONFIG_COVERAGE) += coverage
 subdir-$(CONFIG_UBSAN) += ubsan
 
-subdir-y += libelf
+subdir-$(CONFIG_NEEDS_LIBELF) += libelf
 subdir-$(CONFIG_HAS_DEVICE_TREE) += libfdt