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x86/mm/set_memory: Fix -Wmissing-prototypes warnings 

Add missing includes and move prototypes into the header set_memory.h in
order to fix -Wmissing-prototypes warnings.

 [ bp: Add ifdeffery around arch_invalidate_pmem() ]

Signed-off-by: Benjamin Thiel <b.thiel@posteo.de>
Signed-off-by: Borislav Petkov <bp@suse.de>
Link: https://lkml.kernel.org/r/20200320145028.6013-1-b.thiel@posteo.de
This commit is contained in:
Benjamin Thiel 2020-03-27 11:26:06 +01:00 committed by Borislav Petkov
parent 860f89e618
commit 5bacdc0982
3 changed files with 6 additions and 7 deletions
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2
arch/x86/include/asm/set_memory.h
View File

@ -46,6 +46,8 @@ int set_memory_4k(unsigned long addr, int numpages);
int set_memory_encrypted(unsigned long addr, int numpages);
int set_memory_decrypted(unsigned long addr, int numpages);
int set_memory_np_noalias(unsigned long addr, int numpages);
int set_memory_nonglobal(unsigned long addr, int numpages);
int set_memory_global(unsigned long addr, int numpages);
int set_pages_array_uc(struct page **pages, int addrinarray);
int set_pages_array_wc(struct page **pages, int addrinarray);

3
arch/x86/mm/pat/set_memory.c
View File

@ -15,6 +15,7 @@
#include <linux/gfp.h>
#include <linux/pci.h>
#include <linux/vmalloc.h>
#include <linux/libnvdimm.h>
#include <asm/e820/api.h>
#include <asm/processor.h>
@ -304,11 +305,13 @@ void clflush_cache_range(void *vaddr, unsigned int size)
}
EXPORT_SYMBOL_GPL(clflush_cache_range);
#ifdef CONFIG_ARCH_HAS_PMEM_API
void arch_invalidate_pmem(void *addr, size_t size)
{
clflush_cache_range(addr, size);
}
EXPORT_SYMBOL_GPL(arch_invalidate_pmem);
#endif
static void __cpa_flush_all(void *arg)
{

8
arch/x86/mm/pti.c
View File

@ -39,6 +39,7 @@
#include <asm/tlbflush.h>
#include <asm/desc.h>
#include <asm/sections.h>
#include <asm/set_memory.h>
#undef pr_fmt
#define pr_fmt(fmt) "Kernel/User page tables isolation: " fmt
@ -554,13 +555,6 @@ static inline bool pti_kernel_image_global_ok(void)
return true;
}
/*
* This is the only user for these and it is not arch-generic
* like the other set_memory.h functions. Just extern them.
*/
extern int set_memory_nonglobal(unsigned long addr, int numpages);
extern int set_memory_global(unsigned long addr, int numpages);
/*
* For some configurations, map all of kernel text into the user page
* tables. This reduces TLB misses, especially on non-PCID systems.