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authorPeter Zijlstra <peterz@infradead.org>2018-12-03 20:03:45 +0300
committerIngo Molnar <mingo@kernel.org>2018-12-17 20:54:22 +0300
commitecc729f1f47142ad31741549f400b611435c1af7 (patch)
tree13490d84db27996d9cdc59cdc654b07cde21a2ea /arch/x86/mm
parent02117e42db7470e59910088b2b0ee42d581d2651 (diff)
downloadlinux-ecc729f1f47142ad31741549f400b611435c1af7.tar.xz
x86/mm/cpa: Add ARRAY and PAGES_ARRAY selftests
The current pageattr-test code only uses the regular range interface, add code that also tests the array and pages interface. 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> Cc: Tom.StDenis@amd.com Cc: dave.hansen@intel.com Link: http://lkml.kernel.org/r/20181203171043.162771364@infradead.org Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'arch/x86/mm')
-rw-r--r--arch/x86/mm/pageattr-test.c28
1 files changed, 24 insertions, 4 deletions
diff --git a/arch/x86/mm/pageattr-test.c b/arch/x86/mm/pageattr-test.c
index 08f8f76a4852..b6b6468530f1 100644
--- a/arch/x86/mm/pageattr-test.c
+++ b/arch/x86/mm/pageattr-test.c
@@ -23,7 +23,8 @@
static __read_mostly int print = 1;
enum {
- NTEST = 400,
+ NTEST = 3 * 100,
+ NPAGES = 100,
#ifdef CONFIG_X86_64
LPS = (1 << PMD_SHIFT),
#elif defined(CONFIG_X86_PAE)
@@ -110,6 +111,9 @@ static int print_split(struct split_state *s)
static unsigned long addr[NTEST];
static unsigned int len[NTEST];
+static struct page *pages[NPAGES];
+static unsigned long addrs[NPAGES];
+
/* Change the global bit on random pages in the direct mapping */
static int pageattr_test(void)
{
@@ -137,7 +141,7 @@ static int pageattr_test(void)
unsigned long pfn = prandom_u32() % max_pfn_mapped;
addr[i] = (unsigned long)__va(pfn << PAGE_SHIFT);
- len[i] = prandom_u32() % 100;
+ len[i] = prandom_u32() % NPAGES;
len[i] = min_t(unsigned long, len[i], max_pfn_mapped - pfn - 1);
if (len[i] == 0)
@@ -167,14 +171,30 @@ static int pageattr_test(void)
break;
}
__set_bit(pfn + k, bm);
+ addrs[k] = addr[i] + k*PAGE_SIZE;
+ pages[k] = pfn_to_page(pfn + k);
}
if (!addr[i] || !pte || !k) {
addr[i] = 0;
continue;
}
- test_addr = addr[i];
- err = change_page_attr_set(&test_addr, len[i], PAGE_CPA_TEST, 0);
+ switch (i % 3) {
+ case 0:
+ test_addr = addr[i];
+ err = change_page_attr_set(&test_addr, len[i], PAGE_CPA_TEST, 0);
+ break;
+
+ case 1:
+ err = change_page_attr_set(addrs, len[1], PAGE_CPA_TEST, 1);
+ break;
+
+ case 2:
+ err = cpa_set_pages_array(pages, len[i], PAGE_CPA_TEST);
+ break;
+ }
+
+
if (err < 0) {
printk(KERN_ERR "CPA %d failed %d\n", i, err);
failed++;