Commitc55b855

hjl-tools

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Ingo Molnar

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x86/boot/64: Verify alignment of the LOAD segment

Since the x86-64 kernel must be aligned to 2MB, refuse to boot thekernel if the alignment of the LOAD segment isn't a multiple of 2MB.Signed-off-by: H.J. Lu <hjl.tools@gmail.com>Cc: Andy Shevchenko <andy.shevchenko@gmail.com>Cc: Eric Biederman <ebiederm@xmission.com>Cc: H. Peter Anvin <hpa@zytor.com>Cc: Juergen Gross <jgross@suse.com>Cc: Kees Cook <keescook@chromium.org>Cc: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>Cc: Linus Torvalds <torvalds@linux-foundation.org>Cc: Peter Zijlstra <peterz@infradead.org>Cc: Thomas Gleixner <tglx@linutronix.de>Link:http://lkml.kernel.org/r/CAMe9rOrR7xSJgUfiCoZLuqWUwymRxXPoGBW38%2BpN%3D9g%2ByKNhZw@mail.gmail.comSigned-off-by: Ingo Molnar <mingo@kernel.org>

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arch/x86/boot/compressed
- misc.c

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`‎arch/x86/boot/compressed/misc.c‎`

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Original file line number	Diff line number	Diff line change
`@@ -309,6 +309,10 @@ static void parse_elf(void *output)`
`309`	`309`
`310`	`310`	`switch (phdr->p_type) {`
`311`	`311`	`casePT_LOAD:`
	`312`	`+#ifdefCONFIG_X86_64`
	`313`	`+if ((phdr->p_align %0x200000)!=0)`
	`314`	`+error("Alignment of LOAD segment isn't multiple of 2MB");`
	`315`	`+#endif`
`312`	`316`	`#ifdefCONFIG_RELOCATABLE`
`313`	`317`	`dest=output;`
`314`	`318`	`dest+= (phdr->p_paddr-LOAD_PHYSICAL_ADDR);`

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Commitc55b855

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`‎arch/x86/boot/compressed/misc.c‎`

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