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| author | Zeng Chi <zengchi@kylinos.cn> | 2026-09-21 18:24:42 +0800 |
|---|---|---|
| committer | Sean Christopherson <seanjc@google.com> | 2026-09-22 08:36:16 -0700 |
| commit | 119e9db233ad0f4cbd4cfb9f9385a7bca378b37d (patch) | |
| tree | 660d50d4139cb750fbde1ae3432452c20726c99d /scripts/Makefile | |
| download | linux-stable-119e9db233ad0f4cbd4cfb9f9385a7bca378b37d.tar.gz linux-stable-119e9db233ad0f4cbd4cfb9f9385a7bca378b37d.zip | |
KVM: Don't pre-reserve xarray entries when storing empty/NULL attributesgrafted
Skip the xarray reservation loop when clearing all memory attributes, as
storing NULL only erases the entry and never needs to allocate, so no
reservation (and no cleanup of a failed one) is required in that case.
Suggested-by: Sean Christopherson <seanjc@google.com>
Cc: David Ballesteros <davimaba.v@proton.me>
Signed-off-by: Zeng Chi <zengchi@kylinos.cn>
Link: https://patch.msgid.link/20260921102442.1232375-1-zeng_chi911@163.com
[sean: split to separate patch]
Signed-off-by: Sean Christopherson <seanjc@google.com>
Diffstat (limited to 'scripts/Makefile')
| -rw-r--r-- | scripts/Makefile | 69 |
1 files changed, 69 insertions, 0 deletions
diff --git a/scripts/Makefile b/scripts/Makefile new file mode 100644 index 000000000..3434a82a1 --- /dev/null +++ b/scripts/Makefile @@ -0,0 +1,69 @@ +# SPDX-License-Identifier: GPL-2.0 +### +# scripts contains sources for various helper programs used throughout +# the kernel for the build process. + +hostprogs-always-$(CONFIG_KALLSYMS) += kallsyms +hostprogs-always-$(BUILD_C_RECORDMCOUNT) += recordmcount +hostprogs-always-$(CONFIG_BUILDTIME_TABLE_SORT) += sorttable +hostprogs-always-$(CONFIG_ASN1) += asn1_compiler +hostprogs-always-$(CONFIG_MODULE_SIG_FORMAT) += sign-file +hostprogs-always-$(CONFIG_SYSTEM_EXTRA_CERTIFICATE) += insert-sys-cert +hostprogs-always-$(CONFIG_RUST_KERNEL_DOCTESTS) += rustdoc_test_builder +hostprogs-always-$(CONFIG_RUST_KERNEL_DOCTESTS) += rustdoc_test_gen +hostprogs-always-$(CONFIG_TRACEPOINTS) += tracepoint-update + +sorttable-objs := sorttable.o elf-parse.o +tracepoint-update-objs := tracepoint-update.o elf-parse.o + +ifneq ($(or $(CONFIG_X86_64),$(CONFIG_X86_32)),) +always-$(CONFIG_RUST) += target.json +filechk_rust_target = $< < include/config/auto.conf + +$(obj)/target.json: scripts/generate_rust_target include/config/auto.conf FORCE + $(call filechk,rust_target) +endif + +hostprogs += generate_rust_target +generate_rust_target-rust := y +rustdoc_test_builder-rust := y +rustdoc_test_gen-rust := y + +HOSTCFLAGS_tracepoint-update.o = -I$(srctree)/tools/include +HOSTCFLAGS_elf-parse.o = -I$(srctree)/tools/include +HOSTCFLAGS_sorttable.o = -I$(srctree)/tools/include +HOSTLDLIBS_sorttable = -lpthread +HOSTCFLAGS_asn1_compiler.o = -I$(srctree)/include +HOSTCFLAGS_sign-file.o = $(shell $(HOSTPKG_CONFIG) --cflags libcrypto 2> /dev/null) +HOSTCFLAGS_sign-file.o += -I$(srctree)/tools/include/uapi/ +HOSTLDLIBS_sign-file = $(shell $(HOSTPKG_CONFIG) --libs libcrypto 2> /dev/null || echo -lcrypto) + +ifdef CONFIG_UNWINDER_ORC +ifeq ($(ARCH),x86_64) +SRCARCH := x86 +endif +ifeq ($(ARCH),loongarch) +SRCARCH := loongarch +endif +HOSTCFLAGS_sorttable.o += -I$(srctree)/tools/arch/$(SRCARCH)/include +HOSTCFLAGS_sorttable.o += -DUNWINDER_ORC_ENABLED +endif + +ifdef CONFIG_BUILDTIME_MCOUNT_SORT +HOSTCFLAGS_sorttable.o += -DMCOUNT_SORT_ENABLED +endif + +# The following programs are only built on demand +hostprogs += unifdef gen_packed_field_checks + +# The module linker script is preprocessed on demand +targets += module.lds + +subdir-$(CONFIG_GCC_PLUGINS) += gcc-plugins +subdir-$(CONFIG_GENKSYMS) += genksyms +subdir-$(CONFIG_GENDWARFKSYMS) += gendwarfksyms +subdir-$(CONFIG_SECURITY_SELINUX) += selinux +subdir-$(CONFIG_SECURITY_IPE) += ipe + +# Let clean descend into subdirs +subdir- += basic dtc gdb kconfig mod |