Xi Ruoyao e05d4cd9b8 LoongArch: Add support for relocating the kernel with RELR relocation ... RELR as a relocation packing format for relative relocations for reducing the size of relative relocation records. In a position independent executable there are often many relative relocation records, and our vmlinux is a PIE. The LLD linker (since 17.0.0) and the BFD linker (since 2.43) supports packing the relocations in the RELR format for LoongArch, with the flag -z pack-relative-relocs. Commits 5cf896fb6b ("arm64: Add support for relocating the kernel with RELR relocations") and ccb2d173b9 ("Makefile: use -z pack-relative-relocs") have already added the framework to use RELR. We just need to wire it up and process the RELR relocation records in relocate_relative() in addition to the RELA relocation records. A ".p2align 3" directive is added to la_abs macro or the BFD linker cannot pack the relocation records against the .la_abs section (the ". = ALIGN(8);" directive in vmlinux.lds.S is too late in the linking process). With defconfig and CONFIG_RELR vmlinux.efi is 2.1 MiB (6%) smaller, and vmlinuz.efi (using gzip compression) is 384 KiB (2.8%) smaller. Link: https://groups.google.com/d/topic/generic-abi/bX460iggiKg Link: https://reviews.llvm.org/D138135#4531389 Link: https://sourceware.org/git/?p=binutils-gdb.git;a=commit;h=d89ecf33ab6d Signed-off-by: Xi Ruoyao <xry111@xry111.site> Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>		2024-07-20 22:41:07 +08:00
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boot	LoongArch: Fix GMAC's phy-mode definitions in dts	2024-06-03 15:45:53 +08:00
configs	LoongArch changes for v6.10	2024-05-22 09:43:07 -07:00
crypto	LoongArch/crypto: Clean up useless assignment operations	2024-03-19 15:50:34 +08:00
include	LoongArch: Add support for relocating the kernel with RELR relocation	2024-07-20 22:41:07 +08:00
kernel	LoongArch: Add support for relocating the kernel with RELR relocation	2024-07-20 22:41:07 +08:00
kvm	LoongArch: KVM: Remove an unneeded semicolon	2024-06-21 10:18:40 +08:00
lib	LoongArch: Select ARCH_SUPPORTS_INT128 if CC_HAS_INT128	2024-05-14 12:24:18 +08:00
mm	LoongArch changes for v6.10	2024-05-22 09:43:07 -07:00
net	bpf: Take return from set_memory_rox() into account with bpf_jit_binary_lock_ro()	2024-03-14 19:28:52 -07:00
pci	LoongArch: Add FDT booting support from efi system table	2022-12-14 08:41:53 +08:00
power	LoongArch: Add ACPI standard hardware register based S3 support	2024-07-20 22:41:06 +08:00
vdso	Makefile: remove redundant tool coverage variables	2024-05-14 23:35:48 +09:00
Kbuild	LoongArch: Allow device trees be built into the kernel	2024-01-17 12:43:00 +08:00
Kconfig	LoongArch: Add support for relocating the kernel with RELR relocation	2024-07-20 22:41:07 +08:00
Kconfig.debug	LoongArch: Only allow OBJTOOL & ORC unwinder if toolchain supports -mthin-add-sub	2024-06-21 10:18:40 +08:00
Makefile	- A series ("kbuild: enable more warnings by default") from Arnd	2024-05-22 18:59:29 -07:00