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Commit 0a646e9c authored by Linus Torvalds's avatar Linus Torvalds
Browse files

Merge branch 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 

Pull x86 fixes from Thomas Gleixner:
 "A small set of changes:

   - a fixup for kexec related to 5-level paging mode. That covers most
     of the cases except kexec from a 5-level kernel to a 4-level
     kernel. The latter needs more work and is going to come in 4.17

   - two trivial fixes for build warnings triggered by LTO and gcc-8"

* 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86/power: Fix swsusp_arch_resume prototype
  x86/dumpstack: Avoid uninitlized variable
  x86/kexec: Make kexec (mostly) work in 5-level paging mode
parents f74a127f 328008a7

arch/x86/kernel/dumpstack.c

+1 −1
Original line number Diff line number Diff line
@@ -109,7 +109,7 @@ void show_trace_log_lvl(struct task_struct *task, struct pt_regs *regs, 
	struct stack_info stack_info = {0};

	unsigned long visit_mask = 0;

	int graph_idx = 0;

	bool partial;

	bool partial = false;



	printk("%sCall Trace:\n", log_lvl);

arch/x86/kernel/relocate_kernel_64.S

+8 −0
Original line number Diff line number Diff line
@@ -68,6 +68,9 @@ relocate_kernel: 
	movq	%cr4, %rax

	movq	%rax, CR4(%r11)



	/* Save CR4. Required to enable the right paging mode later. */

	movq	%rax, %r13



	/* zero out flags, and disable interrupts */

	pushq $0

	popfq
@@ -126,8 +129,13 @@ identity_mapped: 
	/*

	 * Set cr4 to a known state:

	 *  - physical address extension enabled

	 *  - 5-level paging, if it was enabled before

	 */

	movl	$X86_CR4_PAE, %eax

	testq	$X86_CR4_LA57, %r13

	jz	1f

	orl	$X86_CR4_LA57, %eax

1:

	movq	%rax, %cr4



	jmp 1f

arch/x86/power/hibernate_32.c

+1 −1
Original line number Diff line number Diff line
@@ -145,7 +145,7 @@ static inline void resume_init_first_level_page_table(pgd_t *pg_dir) 
#endif

}



int swsusp_arch_resume(void)

asmlinkage int swsusp_arch_resume(void)

{

	int error;

arch/x86/power/hibernate_64.c

+1 −1
Original line number Diff line number Diff line
@@ -174,7 +174,7 @@ static int relocate_restore_code(void) 
	return 0;

}



int swsusp_arch_resume(void)

asmlinkage int swsusp_arch_resume(void)

{

	int error;

include/linux/suspend.h

+2 −0
Original line number Diff line number Diff line
@@ -384,6 +384,8 @@ extern int swsusp_page_is_forbidden(struct page *); 
extern void swsusp_set_page_free(struct page *);

extern void swsusp_unset_page_free(struct page *);

extern unsigned long get_safe_page(gfp_t gfp_mask);

extern asmlinkage int swsusp_arch_suspend(void);

extern asmlinkage int swsusp_arch_resume(void);



extern void hibernation_set_ops(const struct platform_hibernation_ops *ops);

extern int hibernate(void);