x86/mm: Remove set_pages_x() and set_pages_nx()

These wrappers don't provide a real benefit over just using
set_memory_x() and set_memory_nx().

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: Andy Lutomirski <luto@kernel.org>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Dave Hansen <dave.hansen@linux.intel.com>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Rik van Riel <riel@surriel.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Link: https://lkml.kernel.org/r/20190826075558.8125-4-hch@lst.de
Signed-off-by: Ingo Molnar <mingo@kernel.org>

diff --git a/arch/x86/include/asm/set_memory.h b/arch/x86/include/asm/set_memory.h
index 899ec9a..fd549c3 100644 (file)
--- a/arch/x86/include/asm/set_memory.h
+++ b/arch/x86/include/asm/set_memory.h
@@ -75,8 +75,6 @@ int set_pages_array_wb(struct page **pages, int addrinarray);
 
 int set_pages_uc(struct page *page, int numpages);
 int set_pages_wb(struct page *page, int numpages);
-int set_pages_x(struct page *page, int numpages);
-int set_pages_nx(struct page *page, int numpages);
 int set_pages_ro(struct page *page, int numpages);
 int set_pages_rw(struct page *page, int numpages);
 

diff --git a/arch/x86/kernel/machine_kexec_32.c b/arch/x86/kernel/machine_kexec_32.c
index 77854b1..7b45e8d 100644 (file)
--- a/arch/x86/kernel/machine_kexec_32.c
+++ b/arch/x86/kernel/machine_kexec_32.c
@@ -148,7 +148,7 @@ int machine_kexec_prepare(struct kimage *image)
 {
        int error;
 
-       set_pages_x(image->control_code_page, 1);
+       set_memory_x((unsigned long)page_address(image->control_code_page), 1);
        error = machine_kexec_alloc_page_tables(image);
        if (error)
                return error;
@@ -162,7 +162,7 @@ int machine_kexec_prepare(struct kimage *image)
  */
 void machine_kexec_cleanup(struct kimage *image)
 {
-       set_pages_nx(image->control_code_page, 1);
+       set_memory_nx((unsigned long)page_address(image->control_code_page), 1);
        machine_kexec_free_page_tables(image);
 }
 

diff --git a/arch/x86/mm/init_32.c b/arch/x86/mm/init_32.c
index 4068abb..930edeb 100644 (file)
--- a/arch/x86/mm/init_32.c
+++ b/arch/x86/mm/init_32.c
@@ -916,7 +916,7 @@ static void mark_nxdata_nx(void)
 
        if (__supported_pte_mask & _PAGE_NX)
                printk(KERN_INFO "NX-protecting the kernel data: %luk\n", size >> 10);
-       set_pages_nx(virt_to_page(start), size >> PAGE_SHIFT);
+       set_memory_nx(start, size >> PAGE_SHIFT);
 }
 
 void mark_rodata_ro(void)

diff --git a/arch/x86/mm/pageattr.c b/arch/x86/mm/pageattr.c
index 1f97a72..d5586a0 100644 (file)
--- a/arch/x86/mm/pageattr.c
+++ b/arch/x86/mm/pageattr.c
@@ -2113,22 +2113,6 @@ int set_pages_array_wb(struct page **pages, int numpages)
 }
 EXPORT_SYMBOL(set_pages_array_wb);
 
-int set_pages_x(struct page *page, int numpages)
-{
-       unsigned long addr = (unsigned long)page_address(page);
-
-       return set_memory_x(addr, numpages);
-}
-EXPORT_SYMBOL(set_pages_x);
-
-int set_pages_nx(struct page *page, int numpages)
-{
-       unsigned long addr = (unsigned long)page_address(page);
-
-       return set_memory_nx(addr, numpages);
-}
-EXPORT_SYMBOL(set_pages_nx);
-
 int set_pages_ro(struct page *page, int numpages)
 {
        unsigned long addr = (unsigned long)page_address(page);