From 119e9db233ad0f4cbd4cfb9f9385a7bca378b37d Mon Sep 17 00:00:00 2001 From: Zeng Chi Date: Mon, 21 Sep 2026 18:24:42 +0800 Subject: KVM: Don't pre-reserve xarray entries when storing empty/NULL attributes 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 Cc: David Ballesteros Signed-off-by: Zeng Chi Link: https://patch.msgid.link/20260921102442.1232375-1-zeng_chi911@163.com [sean: split to separate patch] Signed-off-by: Sean Christopherson --- arch/arm64/boot/Makefile | 57 ++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 57 insertions(+) create mode 100644 arch/arm64/boot/Makefile (limited to 'arch/arm64/boot/Makefile') diff --git a/arch/arm64/boot/Makefile b/arch/arm64/boot/Makefile new file mode 100644 index 000000000..b5a08333b --- /dev/null +++ b/arch/arm64/boot/Makefile @@ -0,0 +1,57 @@ +# +# arch/arm64/boot/Makefile +# +# This file is included by the global makefile so that you can add your own +# architecture-specific flags and dependencies. +# +# This file is subject to the terms and conditions of the GNU General Public +# License. See the file "COPYING" in the main directory of this archive +# for more details. +# +# Copyright (C) 2012, ARM Ltd. +# Author: Will Deacon +# +# Based on the ia64 boot/Makefile. +# + +OBJCOPYFLAGS_Image :=-O binary -R .note -R .note.gnu.build-id -R .comment -S + +targets := Image Image.bz2 Image.gz Image.lz4 Image.lzma Image.lzo \ + Image.zst Image.xz image.fit + +$(obj)/Image: vmlinux FORCE + $(call if_changed,objcopy) + +$(obj)/Image.bz2: $(obj)/Image FORCE + $(call if_changed,bzip2) + +$(obj)/Image.gz: $(obj)/Image FORCE + $(call if_changed,gzip) + +$(obj)/Image.lz4: $(obj)/Image FORCE + $(call if_changed,lz4) + +$(obj)/Image.lzma: $(obj)/Image FORCE + $(call if_changed,lzma) + +$(obj)/Image.lzo: $(obj)/Image FORCE + $(call if_changed,lzo) + +$(obj)/Image.zst: $(obj)/Image FORCE + $(call if_changed,zstd) + +$(obj)/Image.xz: $(obj)/Image FORCE + $(call if_changed,xzkern) + +$(obj)/image.fit: $(obj)/Image $(obj)/dts/dtbs-list FORCE + $(call if_changed,fit) + +EFI_ZBOOT_PAYLOAD := Image +EFI_ZBOOT_BFD_TARGET := elf64-littleaarch64 +EFI_ZBOOT_MACH_TYPE := ARM64 +EFI_ZBOOT_FORWARD_CFI := $(CONFIG_ARM64_BTI_KERNEL) + +EFI_ZBOOT_OBJCOPY_FLAGS = --add-symbol zboot_code_size=0x$$( \ + $(NM) vmlinux|grep _kernel_codesize|cut -d' ' -f1) + +include $(srctree)/drivers/firmware/efi/libstub/Makefile.zboot -- cgit v1.3.1