diff options
| author |   Linus Torvalds <torvalds@linux-foundation.org> | 2020-03-31 10:51:12 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2020-03-31 10:51:12 -0700 |
| commit | 97cddfc34549014b902f5954953ebd9a4f3f040a (patch) | |
| tree | 1dd2ce9455986e92942ecd5eb06cd9ade86a1c0d | |
| parent | Merge branch 'x86-boot-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip (diff) | |
| parent | x86/vdso: Discard .note.gnu.property sections in vDSO (diff) | |
| download | linux-dev-97cddfc34549014b902f5954953ebd9a4f3f040a.tar.xz linux-dev-97cddfc34549014b902f5954953ebd9a4f3f040a.zip | |
Merge branch 'x86-build-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 build updates from Ingo Molnar:
"A handful of updates: two linker script cleanups and a stock
defconfig+allmodconfig bootability fix"
* 'x86-build-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/vdso: Discard .note.gnu.property sections in vDSO
x86, vmlinux.lds: Add RUNTIME_DISCARD_EXIT to generic DISCARDS
x86/Kconfig: Make CMDLINE_OVERRIDE depend on non-empty CMDLINE
| -rw-r--r-- | arch/x86/Kconfig | 2 | ||||
| -rw-r--r-- | arch/x86/entry/vdso/vdso-layout.lds.S | 7 | ||||
| -rw-r--r-- | arch/x86/kernel/vmlinux.lds.S | 1 | ||||
| -rw-r--r-- | include/asm-generic/vmlinux.lds.h | 11 |
4 files changed, 18 insertions, 3 deletions
diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig index 47107eebc685..ade80caafe6b 100644 --- a/arch/x86/Kconfig +++ b/arch/x86/Kconfig @@ -2417,7 +2417,7 @@ config CMDLINE config CMDLINE_OVERRIDE bool "Built-in command line overrides boot loader arguments" - depends on CMDLINE_BOOL + depends on CMDLINE_BOOL && CMDLINE != "" ---help--- Set this option to 'Y' to have the kernel ignore the boot loader command line, and use ONLY the built-in command line. diff --git a/arch/x86/entry/vdso/vdso-layout.lds.S b/arch/x86/entry/vdso/vdso-layout.lds.S index ea7e0155c604..4d152933547d 100644 --- a/arch/x86/entry/vdso/vdso-layout.lds.S +++ b/arch/x86/entry/vdso/vdso-layout.lds.S @@ -57,6 +57,13 @@ SECTIONS *(.gnu.linkonce.b.*) } :text + /* + * Discard .note.gnu.property sections which are unused and have + * different alignment requirement from vDSO note sections. + */ + /DISCARD/ : { + *(.note.gnu.property) + } .note : { *(.note.*) } :text :note .eh_frame_hdr : { *(.eh_frame_hdr) } :text :eh_frame_hdr diff --git a/arch/x86/kernel/vmlinux.lds.S b/arch/x86/kernel/vmlinux.lds.S index 5cab3a29adcb..1bf7e312361f 100644 --- a/arch/x86/kernel/vmlinux.lds.S +++ b/arch/x86/kernel/vmlinux.lds.S @@ -21,6 +21,7 @@ #define LOAD_OFFSET __START_KERNEL_map #endif +#define RUNTIME_DISCARD_EXIT #define EMITS_PT_NOTE #define RO_EXCEPTION_TABLE_ALIGN 16 diff --git a/include/asm-generic/vmlinux.lds.h b/include/asm-generic/vmlinux.lds.h index e00f41aa8ec4..2444336ef04c 100644 --- a/include/asm-generic/vmlinux.lds.h +++ b/include/asm-generic/vmlinux.lds.h @@ -894,10 +894,17 @@ * section definitions so that such archs put those in earlier section * definitions. */ +#ifdef RUNTIME_DISCARD_EXIT +#define EXIT_DISCARDS +#else +#define EXIT_DISCARDS \ + EXIT_TEXT \ + EXIT_DATA +#endif + #define DISCARDS \ /DISCARD/ : { \ - EXIT_TEXT \ - EXIT_DATA \ + EXIT_DISCARDS \ EXIT_CALL \ *(.discard) \ *(.discard.*) \ |