[RFC PATCH v1 20/57] crypto: Remove PAGE_SIZE compile-time constant assumption

Ryan Roberts
2024-10-14T11:52:02Z

To prepare for supporting boot-time page size selection, refactor code
to remove assumptions about PAGE_SIZE being compile-time constant. Code
intended to be equivalent when compile-time page size is active.

Updated BUILD_BUG_ON() to test against limit.

Signed-off-by: Ryan Roberts <ryan.roberts@arm.com>
---

***NOTE***
Any confused maintainers may want to read the cover note here for context:
https://lore.kernel.org/all/20241014105514.3206191-1-ryan.roberts@arm.com/

crypto/lskcipher.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/crypto/lskcipher.c b/crypto/lskcipher.c
index cdb4897c63e6f..2b84cefba7cd1 100644
--- a/crypto/lskcipher.c
+++ b/crypto/lskcipher.c
@@ -79,8 +79,8 @@ static int crypto_lskcipher_crypt_unaligned(
u8 *tiv;
u8 *p;

- BUILD_BUG_ON(MAX_CIPHER_BLOCKSIZE > PAGE_SIZE ||
- MAX_CIPHER_ALIGNMASK >= PAGE_SIZE);
+ BUILD_BUG_ON(MAX_CIPHER_BLOCKSIZE > PAGE_SIZE_MIN ||
+ MAX_CIPHER_ALIGNMASK >= PAGE_SIZE_MIN);

tiv = kmalloc(PAGE_SIZE, GFP_ATOMIC);
if (!tiv)
--
2.43.0