aboutsummaryrefslogtreecommitdiff
path: root/arch/powerpc/lib/test-code-patching.c
diff options
context:
space:
mode:
authorJohannes Berg <[email protected]>2024-10-09 08:59:14 +0200
committerJohannes Berg <[email protected]>2024-10-09 08:59:22 +0200
commita0efa2f362a69e47b9d8b48f770ef3a0249a7911 (patch)
tree384d2c79a9b613213ef7591583d820d18c7be9c3 /arch/powerpc/lib/test-code-patching.c
parentdb03488897a70367aeafe82d07a78943d2a6068e (diff)
parent36efaca9cb28a893cad98f0448c39a8b698859e2 (diff)
Merge net-next/main to resolve conflicts
The wireless-next tree was based on something older, and there are now conflicts between -rc2 and work here. Merge net-next, which has enough of -rc2 for the conflicts to happen, resolving them in the process. Signed-off-by: Johannes Berg <[email protected]>
Diffstat (limited to 'arch/powerpc/lib/test-code-patching.c')
-rw-r--r--arch/powerpc/lib/test-code-patching.c41
1 files changed, 41 insertions, 0 deletions
diff --git a/arch/powerpc/lib/test-code-patching.c b/arch/powerpc/lib/test-code-patching.c
index f76030087f98..8cd3b32f805b 100644
--- a/arch/powerpc/lib/test-code-patching.c
+++ b/arch/powerpc/lib/test-code-patching.c
@@ -438,6 +438,46 @@ static void __init test_multi_instruction_patching(void)
vfree(buf);
}
+static void __init test_data_patching(void)
+{
+ void *buf;
+ u32 *addr32;
+
+ buf = vzalloc(PAGE_SIZE);
+ check(buf);
+ if (!buf)
+ return;
+
+ addr32 = buf + 128;
+
+ addr32[1] = 0xA0A1A2A3;
+ addr32[2] = 0xB0B1B2B3;
+
+ check(!patch_uint(&addr32[1], 0xC0C1C2C3));
+
+ check(addr32[0] == 0);
+ check(addr32[1] == 0xC0C1C2C3);
+ check(addr32[2] == 0xB0B1B2B3);
+ check(addr32[3] == 0);
+
+ /* Unaligned patch_ulong() should fail */
+ if (IS_ENABLED(CONFIG_PPC64))
+ check(patch_ulong(&addr32[1], 0xD0D1D2D3) == -EINVAL);
+
+ check(!patch_ulong(&addr32[2], 0xD0D1D2D3));
+
+ check(addr32[0] == 0);
+ check(addr32[1] == 0xC0C1C2C3);
+ check(*(unsigned long *)(&addr32[2]) == 0xD0D1D2D3);
+
+ if (!IS_ENABLED(CONFIG_PPC64))
+ check(addr32[3] == 0);
+
+ check(addr32[4] == 0);
+
+ vfree(buf);
+}
+
static int __init test_code_patching(void)
{
pr_info("Running code patching self-tests ...\n");
@@ -448,6 +488,7 @@ static int __init test_code_patching(void)
test_translate_branch();
test_prefixed_patching();
test_multi_instruction_patching();
+ test_data_patching();
return 0;
}