diff options
Diffstat (limited to 'arch/arm64/kernel/vmlinux.lds.S')
-rw-r--r-- | arch/arm64/kernel/vmlinux.lds.S | 40 |
1 files changed, 34 insertions, 6 deletions
diff --git a/arch/arm64/kernel/vmlinux.lds.S b/arch/arm64/kernel/vmlinux.lds.S index ec8e894684a7..5ca957e656ab 100644 --- a/arch/arm64/kernel/vmlinux.lds.S +++ b/arch/arm64/kernel/vmlinux.lds.S @@ -6,6 +6,7 @@ */ #define RO_EXCEPTION_TABLE_ALIGN 8 +#define RUNTIME_DISCARD_EXIT #include <asm-generic/vmlinux.lds.h> #include <asm/cache.h> @@ -20,6 +21,13 @@ ENTRY(_text) jiffies = jiffies_64; + +#define HYPERVISOR_EXTABLE \ + . = ALIGN(SZ_8); \ + __start___kvm_ex_table = .; \ + *(__kvm_ex_table) \ + __stop___kvm_ex_table = .; + #define HYPERVISOR_TEXT \ /* \ * Align to 4 KB so that \ @@ -35,6 +43,7 @@ jiffies = jiffies_64; __hyp_idmap_text_end = .; \ __hyp_text_start = .; \ *(.hyp.text) \ + HYPERVISOR_EXTABLE \ __hyp_text_end = .; #define IDMAP_TEXT \ @@ -88,16 +97,13 @@ SECTIONS * matching the same input section name. There is no documented * order of matching. */ + DISCARDS /DISCARD/ : { - EXIT_CALL - *(.discard) - *(.discard.*) *(.interp .dynamic) *(.dynsym .dynstr .hash .gnu.hash) - *(.eh_frame) } - . = KIMAGE_VADDR + TEXT_OFFSET; + . = KIMAGE_VADDR; .head.text : { _text = .; @@ -123,6 +129,14 @@ SECTIONS *(.got) /* Global offset table */ } + /* + * Make sure that the .got.plt is either completely empty or it + * contains only the lazy dispatch entries. + */ + .got.plt : { *(.got.plt) } + ASSERT(SIZEOF(.got.plt) == 0 || SIZEOF(.got.plt) == 0x18, + "Unexpected GOT/PLT entries detected!") + . = ALIGN(SEGMENT_ALIGN); _etext = .; /* End of text section */ @@ -241,8 +255,22 @@ SECTIONS _end = .; STABS_DEBUG + DWARF_DEBUG + ELF_DETAILS HEAD_SYMBOLS + + /* + * Sections that should stay zero sized, which is safer to + * explicitly check instead of blindly discarding. + */ + .plt : { + *(.plt) *(.plt.*) *(.iplt) *(.igot) + } + ASSERT(SIZEOF(.plt) == 0, "Unexpected run-time procedure linkages detected!") + + .data.rel.ro : { *(.data.rel.ro) } + ASSERT(SIZEOF(.data.rel.ro) == 0, "Unexpected RELRO detected!") } #include "image-vars.h" @@ -266,4 +294,4 @@ ASSERT((__entry_tramp_text_end - __entry_tramp_text_start) == PAGE_SIZE, /* * If padding is applied before .head.text, virt<->phys conversions will fail. */ -ASSERT(_text == (KIMAGE_VADDR + TEXT_OFFSET), "HEAD is misaligned") +ASSERT(_text == KIMAGE_VADDR, "HEAD is misaligned") |