kernel: delete Linux 5.4 config and patches

As the upcoming release will be based on Linux 5.10 only, remove all
kernel configuration as well as patches for Linux 5.4.
There were no targets still actively using Linux 5.4.

Signed-off-by: Daniel Golle <daniel@makrotopia.org>
(cherry picked from commit 3a14580411adfb75f9a44eded9f41245b9e44606)

1 files changed, 0 insertions, 147 deletions

diff --git a/target/linux/generic/backport-5.4/080-wireguard-0059-crypto-x86-chacha-sse3-use-unaligned-loads-for-state.patch b/target/linux/generic/backport-5.4/080-wireguard-0059-crypto-x86-chacha-sse3-use-unaligned-loads-for-state.patch
deleted file mode 100644
index 52847877f6..0000000000
--- a/target/linux/generic/backport-5.4/080-wireguard-0059-crypto-x86-chacha-sse3-use-unaligned-loads-for-state.patch
+++ /dev/null
@@ -1,147 +0,0 @@
-From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
-From: Ard Biesheuvel <ardb@kernel.org>
-Date: Wed, 8 Jul 2020 12:11:18 +0300
-Subject: [PATCH] crypto: x86/chacha-sse3 - use unaligned loads for state array
-
-commit e79a31715193686e92dadb4caedfbb1f5de3659c upstream.
-
-Due to the fact that the x86 port does not support allocating objects
-on the stack with an alignment that exceeds 8 bytes, we have a rather
-ugly hack in the x86 code for ChaCha to ensure that the state array is
-aligned to 16 bytes, allowing the SSE3 implementation of the algorithm
-to use aligned loads.
-
-Given that the performance benefit of using of aligned loads appears to
-be limited (~0.25% for 1k blocks using tcrypt on a Corei7-8650U), and
-the fact that this hack has leaked into generic ChaCha code, let's just
-remove it.
-
-Cc: Martin Willi <martin@strongswan.org>
-Cc: Herbert Xu <herbert@gondor.apana.org.au>
-Cc: Eric Biggers <ebiggers@kernel.org>
-Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
-Reviewed-by: Martin Willi <martin@strongswan.org>
-Reviewed-by: Eric Biggers <ebiggers@google.com>
-Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
-Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
----
- arch/x86/crypto/chacha-ssse3-x86_64.S | 16 ++++++++--------
- arch/x86/crypto/chacha_glue.c         | 17 ++---------------
- include/crypto/chacha.h               |  4 ----
- 3 files changed, 10 insertions(+), 27 deletions(-)
-
---- a/arch/x86/crypto/chacha-ssse3-x86_64.S
-+++ b/arch/x86/crypto/chacha-ssse3-x86_64.S
-@@ -120,10 +120,10 @@ ENTRY(chacha_block_xor_ssse3)
- 	FRAME_BEGIN
- 
- 	# x0..3 = s0..3
--	movdqa		0x00(%rdi),%xmm0
--	movdqa		0x10(%rdi),%xmm1
--	movdqa		0x20(%rdi),%xmm2
--	movdqa		0x30(%rdi),%xmm3
-+	movdqu		0x00(%rdi),%xmm0
-+	movdqu		0x10(%rdi),%xmm1
-+	movdqu		0x20(%rdi),%xmm2
-+	movdqu		0x30(%rdi),%xmm3
- 	movdqa		%xmm0,%xmm8
- 	movdqa		%xmm1,%xmm9
- 	movdqa		%xmm2,%xmm10
-@@ -205,10 +205,10 @@ ENTRY(hchacha_block_ssse3)
- 	# %edx: nrounds
- 	FRAME_BEGIN
- 
--	movdqa		0x00(%rdi),%xmm0
--	movdqa		0x10(%rdi),%xmm1
--	movdqa		0x20(%rdi),%xmm2
--	movdqa		0x30(%rdi),%xmm3
-+	movdqu		0x00(%rdi),%xmm0
-+	movdqu		0x10(%rdi),%xmm1
-+	movdqu		0x20(%rdi),%xmm2
-+	movdqu		0x30(%rdi),%xmm3
- 
- 	mov		%edx,%r8d
- 	call		chacha_permute
---- a/arch/x86/crypto/chacha_glue.c
-+++ b/arch/x86/crypto/chacha_glue.c
-@@ -14,8 +14,6 @@
- #include <linux/module.h>
- #include <asm/simd.h>
- 
--#define CHACHA_STATE_ALIGN 16
--
- asmlinkage void chacha_block_xor_ssse3(u32 *state, u8 *dst, const u8 *src,
- 				       unsigned int len, int nrounds);
- asmlinkage void chacha_4block_xor_ssse3(u32 *state, u8 *dst, const u8 *src,
-@@ -125,8 +123,6 @@ static void chacha_dosimd(u32 *state, u8
- 
- void hchacha_block_arch(const u32 *state, u32 *stream, int nrounds)
- {
--	state = PTR_ALIGN(state, CHACHA_STATE_ALIGN);
--
- 	if (!static_branch_likely(&chacha_use_simd) || !crypto_simd_usable()) {
- 		hchacha_block_generic(state, stream, nrounds);
- 	} else {
-@@ -139,8 +135,6 @@ EXPORT_SYMBOL(hchacha_block_arch);
- 
- void chacha_init_arch(u32 *state, const u32 *key, const u8 *iv)
- {
--	state = PTR_ALIGN(state, CHACHA_STATE_ALIGN);
--
- 	chacha_init_generic(state, key, iv);
- }
- EXPORT_SYMBOL(chacha_init_arch);
-@@ -148,8 +142,6 @@ EXPORT_SYMBOL(chacha_init_arch);
- void chacha_crypt_arch(u32 *state, u8 *dst, const u8 *src, unsigned int bytes,
- 		       int nrounds)
- {
--	state = PTR_ALIGN(state, CHACHA_STATE_ALIGN);
--
- 	if (!static_branch_likely(&chacha_use_simd) || !crypto_simd_usable() ||
- 	    bytes <= CHACHA_BLOCK_SIZE)
- 		return chacha_crypt_generic(state, dst, src, bytes, nrounds);
-@@ -171,15 +163,12 @@ EXPORT_SYMBOL(chacha_crypt_arch);
- static int chacha_simd_stream_xor(struct skcipher_request *req,
- 				  const struct chacha_ctx *ctx, const u8 *iv)
- {
--	u32 *state, state_buf[16 + 2] __aligned(8);
-+	u32 state[CHACHA_STATE_WORDS] __aligned(8);
- 	struct skcipher_walk walk;
- 	int err;
- 
- 	err = skcipher_walk_virt(&walk, req, false);
- 
--	BUILD_BUG_ON(CHACHA_STATE_ALIGN != 16);
--	state = PTR_ALIGN(state_buf + 0, CHACHA_STATE_ALIGN);
--
- 	chacha_init_generic(state, ctx->key, iv);
- 
- 	while (walk.nbytes > 0) {
-@@ -218,12 +207,10 @@ static int xchacha_simd(struct skcipher_
- {
- 	struct crypto_skcipher *tfm = crypto_skcipher_reqtfm(req);
- 	struct chacha_ctx *ctx = crypto_skcipher_ctx(tfm);
--	u32 *state, state_buf[16 + 2] __aligned(8);
-+	u32 state[CHACHA_STATE_WORDS] __aligned(8);
- 	struct chacha_ctx subctx;
- 	u8 real_iv[16];
- 
--	BUILD_BUG_ON(CHACHA_STATE_ALIGN != 16);
--	state = PTR_ALIGN(state_buf + 0, CHACHA_STATE_ALIGN);
- 	chacha_init_generic(state, ctx->key, req->iv);
- 
- 	if (req->cryptlen > CHACHA_BLOCK_SIZE && crypto_simd_usable()) {
---- a/include/crypto/chacha.h
-+++ b/include/crypto/chacha.h
-@@ -25,11 +25,7 @@
- #define CHACHA_BLOCK_SIZE	64
- #define CHACHAPOLY_IV_SIZE	12
- 
--#ifdef CONFIG_X86_64
--#define CHACHA_STATE_WORDS	((CHACHA_BLOCK_SIZE + 12) / sizeof(u32))
--#else
- #define CHACHA_STATE_WORDS	(CHACHA_BLOCK_SIZE / sizeof(u32))
--#endif
- 
- /* 192-bit nonce, then 64-bit stream position */
- #define XCHACHA_IV_SIZE		32