From: "Jason A. Donenfeld" <Jason@zx2c4.com>
To: Adhemerval Zanella <adhemerval.zanella@linaro.org>
Cc: Theodore Ts'o <tytso@mit.edu>,
linux-kernel@vger.kernel.org, linux-crypto@vger.kernel.org,
linux-arm-kernel@lists.infradead.org, linux-arch@vger.kernel.org,
Catalin Marinas <catalin.marinas@arm.com>,
Will Deacon <will@kernel.org>,
Thomas Gleixner <tglx@linutronix.de>,
Eric Biggers <ebiggers@kernel.org>,
Christophe Leroy <christophe.leroy@csgroup.eu>
Subject: Re: [PATCH] aarch64: vdso: Wire up getrandom() vDSO implementation
Date: Mon, 26 Aug 2024 22:55:41 +0200 [thread overview]
Message-ID: <ZszrzRbL-eks6A3I@zx2c4.com> (raw)
In-Reply-To: <20240826181059.111536-1-adhemerval.zanella@linaro.org>
On Mon, Aug 26, 2024 at 06:10:40PM +0000, Adhemerval Zanella wrote:
> +static __always_inline ssize_t getrandom_syscall(void *buffer, size_t len, unsigned int flags)
> +{
> + register long int x8 asm ("x8") = __NR_getrandom;
> + register long int x0 asm ("x0") = (long int) buffer;
> + register long int x1 asm ("x1") = (long int) len;
> + register long int x2 asm ("x2") = (long int) flags;
> +
> + asm ("svc 0" : "=r"(x0) : "r"(x8), "0"(x0), "r"(x1), "r"(x2));
> +
> + return x0;
> +}
More generally, it might be best to follow the format used by
arch/arm64/include/asm/vdso/gettimeofday.h.
next prev parent reply other threads:[~2024-08-26 20:55 UTC|newest]
Thread overview: 29+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-08-26 18:10 [PATCH] aarch64: vdso: Wire up getrandom() vDSO implementation Adhemerval Zanella
2024-08-26 20:27 ` Jason A. Donenfeld
2024-08-27 13:17 ` Adhemerval Zanella Netto
2024-08-27 13:34 ` Jason A. Donenfeld
2024-08-27 13:39 ` Adhemerval Zanella Netto
2024-08-27 14:00 ` Christophe Leroy
2024-08-27 14:01 ` Adhemerval Zanella Netto
2024-08-27 14:10 ` Christophe Leroy
2024-08-27 14:14 ` Adhemerval Zanella Netto
2024-08-27 14:28 ` Jason A. Donenfeld
2024-08-27 14:30 ` Adhemerval Zanella Netto
2024-08-27 14:32 ` Jason A. Donenfeld
2024-08-27 14:35 ` Adhemerval Zanella Netto
2024-08-27 14:41 ` [PATCH] selftests/vDSO: separate LDLIBS from CFLAGS for libsodium Jason A. Donenfeld
2024-08-27 14:45 ` Adhemerval Zanella Netto
2024-08-27 14:52 ` Jason A. Donenfeld
2024-08-27 13:52 ` [PATCH] aarch64: vdso: Wire up getrandom() vDSO implementation Christophe Leroy
2024-08-26 20:55 ` Jason A. Donenfeld [this message]
2024-08-27 8:46 ` Christophe Leroy
2024-08-27 8:53 ` Jason A. Donenfeld
2024-08-27 15:16 ` Jason A. Donenfeld
2024-08-27 15:18 ` [PATCH] random: vDSO: move prototype of arch chacha function to vdso/getrandom.h Jason A. Donenfeld
2024-08-27 15:47 ` [PATCH v2] " Jason A. Donenfeld
2024-08-27 16:53 ` Christophe Leroy
2024-08-27 16:55 ` Jason A. Donenfeld
2024-08-27 14:07 ` [PATCH] aarch64: vdso: Wire up getrandom() vDSO implementation Adhemerval Zanella Netto
2024-08-27 13:51 ` Ard Biesheuvel
2024-08-27 14:00 ` Mark Rutland
2024-08-27 14:05 ` Adhemerval Zanella Netto
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