From: Thomas Gleixner <tglx@linutronix.de>
To: "Jason A. Donenfeld" <Jason@zx2c4.com>,
linux-kernel@vger.kernel.org, patches@lists.linux.dev
Cc: "Jason A. Donenfeld" <Jason@zx2c4.com>,
linux-crypto@vger.kernel.org, linux-api@vger.kernel.org,
x86@kernel.org, Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
Adhemerval Zanella Netto <adhemerval.zanella@linaro.org>,
Carlos O'Donell <carlos@redhat.com>,
Florian Weimer <fweimer@redhat.com>,
Arnd Bergmann <arnd@arndb.de>, Jann Horn <jannh@google.com>,
Christian Brauner <brauner@kernel.org>,
David Hildenbrand <dhildenb@redhat.com>,
Samuel Neves <sneves@dei.uc.pt>
Subject: Re: [PATCH v18 5/5] x86: vdso: Wire up getrandom() vDSO implementation
Date: Fri, 28 Jun 2024 15:57:47 +0200 [thread overview]
Message-ID: <87pls1xj8k.ffs@tglx> (raw)
In-Reply-To: <20240620005339.1273434-6-Jason@zx2c4.com>
On Thu, Jun 20 2024 at 02:53, Jason A. Donenfeld wrote:
> Hook up the generic vDSO implementation to the x86 vDSO data page. Since
> the existing vDSO infrastructure is heavily based on the timekeeping
> functionality, which works over arrays of bases, a new macro is
> introduced for vvars that are not arrays.
>
> The vDSO function requires a ChaCha20 implementation that does not write
> to the stack, yet can still do an entire ChaCha20 permutation, so
> provide this using SSE2, since this is userland code that must work on
> all x86-64 processors. There's a simple test for this code as well.
>
> Reviewed-by: Samuel Neves <sneves@dei.uc.pt> # for vgetrandom-chacha.S
> Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
Reviewed-by: Thomas Gleixner <tglx@linutronix.de>
prev parent reply other threads:[~2024-06-28 13:57 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-06-20 0:53 [PATCH v18 0/5] implement getrandom() in vDSO Jason A. Donenfeld
2024-06-20 0:53 ` [PATCH v18 1/5] mm: add VM_DROPPABLE for designating always lazily freeable mappings Jason A. Donenfeld
2024-06-20 0:53 ` [PATCH v18 2/5] random: add vgetrandom_alloc() syscall Jason A. Donenfeld
2024-06-20 2:13 ` Aleksa Sarai
2024-06-20 12:18 ` Jason A. Donenfeld
2024-06-28 13:56 ` Thomas Gleixner
2024-06-28 14:09 ` Jason A. Donenfeld
2024-06-28 14:11 ` Jason A. Donenfeld
2024-07-01 11:53 ` Jason A. Donenfeld
2024-07-01 13:59 ` Jason A. Donenfeld
2024-06-20 0:53 ` [PATCH v18 3/5] arch: allocate vgetrandom_alloc() syscall number Jason A. Donenfeld
2024-06-20 0:53 ` [PATCH v18 4/5] random: introduce generic vDSO getrandom() implementation Jason A. Donenfeld
2024-06-28 13:57 ` Thomas Gleixner
2024-06-20 0:53 ` [PATCH v18 5/5] x86: vdso: Wire up getrandom() vDSO implementation Jason A. Donenfeld
2024-06-28 13:57 ` Thomas Gleixner [this message]
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