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xen: add /buildinfo/config entry to hypervisor filesystem
Add the /buildinfo/config entry to the hypervisor filesystem. This entry contains the .config file used to build the hypervisor. Signed-off-by: Juergen Gross <jgross@suse.com> Reviewed-by: Jan Beulich <jbeulich@suse.com>
This commit is contained in:
Juergen Gross authored and Jan Beulich committed
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@@ -298,6 +298,8 @@ xen/arch/*/efi/boot.c
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xen/arch/*/efi/compat.c
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xen/arch/*/efi/efi.h
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xen/arch/*/efi/runtime.c
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xen/common/config_data.S
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xen/common/config.gz
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xen/include/headers*.chk
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xen/include/asm
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xen/include/asm-*/asm-offsets.h
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@@ -135,6 +135,10 @@ Information about the compile domain.
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The compiler used to build Xen.
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#### /buildinfo/config = STRING [CONFIG_HYPFS_CONFIG]
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The contents of the `xen/.config` file at the time of the hypervisor build.
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#### /buildinfo/version/
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A directory containing version information of the hypervisor.
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@@ -127,6 +127,17 @@ config HYPFS
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If unsure, say Y.
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config HYPFS_CONFIG
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bool "Provide hypervisor .config via hypfs entry"
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default y
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depends on HYPFS
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---help---
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When enabled the contents of the .config file used to build the
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hypervisor are provided via the hypfs entry /buildinfo/config.
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Disable this option in case you want to spare some memory or you
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want to hide the .config contents from dom0.
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config KEXEC
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bool "kexec support"
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default y
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@@ -1,6 +1,7 @@
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obj-$(CONFIG_ARGO) += argo.o
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obj-y += bitmap.o
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obj-y += bsearch.o
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obj-$(CONFIG_HYPFS_CONFIG) += config_data.o
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obj-$(CONFIG_CORE_PARKING) += core_parking.o
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obj-y += cpu.o
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obj-$(CONFIG_DEBUG_TRACE) += debugtrace.o
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@@ -73,3 +74,14 @@ obj-$(CONFIG_UBSAN) += ubsan/
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obj-$(CONFIG_NEEDS_LIBELF) += libelf/
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obj-$(CONFIG_HAS_DEVICE_TREE) += libfdt/
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config.gz: ../.config
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gzip -c $< >$@
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config_data.o: config.gz
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config_data.S: $(XEN_ROOT)/xen/tools/binfile
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$(SHELL) $(XEN_ROOT)/xen/tools/binfile $@ config.gz xen_config_data
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clean::
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rm -f config_data.S config.gz 2>/dev/null
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@@ -390,6 +390,10 @@ static HYPFS_STRING_INIT(compile_date, "compile_date");
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static HYPFS_STRING_INIT(compile_domain, "compile_domain");
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static HYPFS_STRING_INIT(extra, "extra");
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#ifdef CONFIG_HYPFS_CONFIG
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static HYPFS_STRING_INIT(config, "config");
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#endif
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static int __init buildinfo_init(void)
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{
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hypfs_add_dir(&hypfs_root, &buildinfo, true);
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@@ -415,6 +419,13 @@ static int __init buildinfo_init(void)
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hypfs_add_leaf(&version, &major, true);
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hypfs_add_leaf(&version, &minor, true);
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#ifdef CONFIG_HYPFS_CONFIG
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config.e.encoding = XEN_HYPFS_ENC_GZIP;
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config.e.size = xen_config_data_size;
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config.u.content = xen_config_data;
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hypfs_add_leaf(&buildinfo, &config, true);
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#endif
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return 0;
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}
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__initcall(buildinfo_init);
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@@ -100,5 +100,8 @@ extern enum system_state {
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bool_t is_active_kernel_text(unsigned long addr);
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extern const char xen_config_data[];
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extern const unsigned int xen_config_data_size;
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#endif /* _LINUX_KERNEL_H */
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