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c0cb86e1d5
Rather than using the clunky, old, slower wireguard-linux-compat out of tree module, this commit does a patch-by-patch backport of upstream's wireguard to 5.4. This specific backport is in widespread use, being part of SUSE's enterprise kernel, Oracle's enterprise kernel, Google's Android kernel, Gentoo's distro kernel, and probably more I've forgotten about. It's definately the "more proper" way of adding wireguard to a kernel than the ugly compat.h hell of the wireguard-linux-compat repo. And most importantly for OpenWRT, it allows using the same module configuration code for 5.10 as for 5.4, with no need for bifurcation. These patches are from the backport tree which is maintained in the open here: https://git.zx2c4.com/wireguard-linux/log/?h=backport-5.4.y I'll be sending PRs to update this as needed. Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com> (cherry picked from commit3888fa7880) (cherry picked from commitd540725871) (cherry picked from commit196f3d586f) (cherry picked from commit3500fd7938) (cherry picked from commit23b801d3ba) (cherry picked from commit0c0cb97da7) (cherry picked from commit2a27f6f90a) Signed-off-by: Ilya Lipnitskiy <ilya.lipnitskiy@gmail.com>
60 lines
1.9 KiB
Diff
60 lines
1.9 KiB
Diff
From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
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From: Uros Bizjak <ubizjak@gmail.com>
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Date: Thu, 27 Aug 2020 19:38:31 +0200
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Subject: [PATCH] crypto: poly1305-x86_64 - Use XORL r32,32
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commit 7dfd1e01b3dfc13431b1b25720cf2692a7e111ef upstream.
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x86_64 zero extends 32bit operations, so for 64bit operands,
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XORL r32,r32 is functionally equal to XORQ r64,r64, but avoids
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a REX prefix byte when legacy registers are used.
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Signed-off-by: Uros Bizjak <ubizjak@gmail.com>
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Cc: Herbert Xu <herbert@gondor.apana.org.au>
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Cc: "David S. Miller" <davem@davemloft.net>
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Acked-by: Jason A. Donenfeld <Jason@zx2c4.com>
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Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
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Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
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---
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arch/x86/crypto/poly1305-x86_64-cryptogams.pl | 8 ++++----
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1 file changed, 4 insertions(+), 4 deletions(-)
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--- a/arch/x86/crypto/poly1305-x86_64-cryptogams.pl
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+++ b/arch/x86/crypto/poly1305-x86_64-cryptogams.pl
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@@ -246,7 +246,7 @@ $code.=<<___ if (!$kernel);
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___
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&declare_function("poly1305_init_x86_64", 32, 3);
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$code.=<<___;
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- xor %rax,%rax
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+ xor %eax,%eax
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mov %rax,0($ctx) # initialize hash value
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mov %rax,8($ctx)
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mov %rax,16($ctx)
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@@ -2869,7 +2869,7 @@ $code.=<<___;
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.type poly1305_init_base2_44,\@function,3
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.align 32
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poly1305_init_base2_44:
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- xor %rax,%rax
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+ xor %eax,%eax
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mov %rax,0($ctx) # initialize hash value
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mov %rax,8($ctx)
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mov %rax,16($ctx)
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@@ -3963,7 +3963,7 @@ xor128_decrypt_n_pad:
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mov \$16,$len
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sub %r10,$len
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xor %eax,%eax
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- xor %r11,%r11
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+ xor %r11d,%r11d
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.Loop_dec_byte:
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mov ($inp,$otp),%r11b
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mov ($otp),%al
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@@ -4101,7 +4101,7 @@ avx_handler:
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.long 0xa548f3fc # cld; rep movsq
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mov $disp,%rsi
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- xor %rcx,%rcx # arg1, UNW_FLAG_NHANDLER
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+ xor %ecx,%ecx # arg1, UNW_FLAG_NHANDLER
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mov 8(%rsi),%rdx # arg2, disp->ImageBase
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mov 0(%rsi),%r8 # arg3, disp->ControlPc
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mov 16(%rsi),%r9 # arg4, disp->FunctionEntry
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