The quilt patch titled
Subject: mm: update uffd-stress to handle EINVAL for unset config features
has been removed from the -mm tree. Its filename was
update-uffd-stress-to-handle-einval-for-unset-config-features.patch
This patch was dropped because it was merged into the mm-stable branch
of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
------------------------------------------------------
From: Audra Mitchell <audra@xxxxxxxxxx>
Subject: mm: update uffd-stress to handle EINVAL for unset config features
Date: Wed, 26 Jun 2024 09:05:12 -0400
Now that we have updated userfaultfd_api to correctly return EINVAL when a
feature is requested but not available, let's fix the uffd-stress test to
only set the UFFD_FEATURE_WP_UNPOPULATED feature when the config is set.
In addition, still run the test if the CONFIG_PTE_MARKER_UFFD_WP is not
set, just dont use the corresponding UFFD_FEATURE_WP_UNPOPULATED feature.
Link: https://lkml.kernel.org/r/20240626130513.120193-2-audra@xxxxxxxxxx
Signed-off-by: Audra Mitchell <audra@xxxxxxxxxx>
Cc: Al Viro <viro@xxxxxxxxxxxxxxxxxx>
Cc: Andrea Arcangeli <aarcange@xxxxxxxxxx>
Cc: Christian Brauner <brauner@xxxxxxxxxx>
Cc: Jan Kara <jack@xxxxxxx>
Cc: Mike Rapoport <rppt@xxxxxxxxxxxxxxxxxx>
Cc: Peter Xu <peterx@xxxxxxxxxx>
Cc: Rafael Aquini <raquini@xxxxxxxxxx>
Cc: Shaohua Li <shli@xxxxxx>
Cc: Shuah Khan <shuah@xxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
tools/testing/selftests/mm/uffd-stress.c | 14 +++++++++-----
1 file changed, 9 insertions(+), 5 deletions(-)
--- a/tools/testing/selftests/mm/uffd-stress.c~update-uffd-stress-to-handle-einval-for-unset-config-features
+++ a/tools/testing/selftests/mm/uffd-stress.c
@@ -36,6 +36,8 @@
#include <asm-generic/unistd.h>
#include "uffd-common.h"
+uint64_t features;
+
#define BOUNCE_RANDOM (1<<0)
#define BOUNCE_RACINGFAULTS (1<<1)
#define BOUNCE_VERIFY (1<<2)
@@ -245,10 +247,14 @@ static int userfaultfd_stress(void)
unsigned long nr;
struct uffd_args args[nr_cpus];
uint64_t mem_size = nr_pages * page_size;
+ int flags = 0;
memset(args, 0, sizeof(struct uffd_args) * nr_cpus);
- if (uffd_test_ctx_init(UFFD_FEATURE_WP_UNPOPULATED, NULL))
+ if (features & UFFD_FEATURE_WP_UNPOPULATED && test_type == TEST_ANON)
+ flags = UFFD_FEATURE_WP_UNPOPULATED;
+
+ if (uffd_test_ctx_init(flags, NULL))
err("context init failed");
if (posix_memalign(&area, page_size, page_size))
@@ -383,8 +389,6 @@ static void set_test_type(const char *ty
static void parse_test_type_arg(const char *raw_type)
{
- uint64_t features = UFFD_API_FEATURES;
-
set_test_type(raw_type);
if (!test_type)
@@ -407,8 +411,8 @@ static void parse_test_type_arg(const ch
* feature.
*/
- if (userfaultfd_open(&features))
- err("Userfaultfd open failed");
+ if (uffd_get_features(&features))
+ err("failed to get available features");
test_uffdio_wp = test_uffdio_wp &&
(features & UFFD_FEATURE_PAGEFAULT_FLAG_WP);
_
Patches currently in -mm which might be from audra@xxxxxxxxxx are
