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x86: make sure the CPA test code's use of _PAGE_UNUSED1 is obvious

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The CPA test code uses _PAGE_UNUSED1, so make sure its obvious.

Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
Cc: Nick Piggin <nickpiggin@yahoo.com.au>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
This commit is contained in:
Jeremy Fitzhardinge 2008-08-28 13:58:39 -07:00 committed by Ingo Molnar
parent c09ff7e174
commit 110e0358e7
2 changed files with 5 additions and 3 deletions
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6
arch/x86/mm/pageattr-test.c
View file

@ -32,7 +32,7 @@ enum {
GPS = (1<<30)
};
#define PAGE_TESTBIT __pgprot(_PAGE_UNUSED1)
#define PAGE_CPA_TEST __pgprot(_PAGE_CPA_TEST)
static int pte_testbit(pte_t pte)
{
@ -174,7 +174,7 @@ static int pageattr_test(void)
}
test_addr = addr[i];
err = change_page_attr_set(&test_addr, len[i], PAGE_TESTBIT, 0);
err = change_page_attr_set(&test_addr, len[i], PAGE_CPA_TEST, 0);
if (err < 0) {
printk(KERN_ERR "CPA %d failed %d\n", i, err);
failed++;
@ -207,7 +207,7 @@ static int pageattr_test(void)
continue;
}
test_addr = addr[i];
err = change_page_attr_clear(&test_addr, len[i], PAGE_TESTBIT, 0);
err = change_page_attr_clear(&test_addr, len[i], PAGE_CPA_TEST, 0);
if (err < 0) {
printk(KERN_ERR "CPA reverting failed: %d\n", err);
failed++;

2
include/asm-x86/pgtable.h
View file

@ -19,6 +19,7 @@
#define _PAGE_BIT_UNUSED3 11
#define _PAGE_BIT_PAT_LARGE 12 /* On 2MB or 1GB pages */
#define _PAGE_BIT_SPECIAL _PAGE_BIT_UNUSED1
#define _PAGE_BIT_CPA_TEST _PAGE_BIT_UNUSED1
#define _PAGE_BIT_NX 63 /* No execute: only valid after cpuid check */
#define _PAGE_PRESENT (_AT(pteval_t, 1) << _PAGE_BIT_PRESENT)
@ -36,6 +37,7 @@
#define _PAGE_PAT (_AT(pteval_t, 1) << _PAGE_BIT_PAT)
#define _PAGE_PAT_LARGE (_AT(pteval_t, 1) << _PAGE_BIT_PAT_LARGE)
#define _PAGE_SPECIAL (_AT(pteval_t, 1) << _PAGE_BIT_SPECIAL)
#define _PAGE_CPA_TEST (_AT(pteval_t, 1) << _PAGE_BIT_CPA_TEST)
#define __HAVE_ARCH_PTE_SPECIAL
#if defined(CONFIG_X86_64) || defined(CONFIG_X86_PAE)