blob: c5abf02e51a5d9d59b0a433d713beb3ec837640c (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
|
From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Arjan van de Ven <arjan@linux.intel.com>
Date: Fri, 29 Jul 2016 19:10:52 +0000
Subject: [PATCH] give rdrand some credit
try to credit rdrand/rdseed with some entropy
In VMs but even modern hardware, we're super starved for entropy, and while we can
and do wear a tin foil hat, it's very hard to argue that
rdrand and rdtsc add zero entropy.
---
drivers/char/random.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/drivers/char/random.c b/drivers/char/random.c
index 2a41b21623ae..d4ecc0e9aef7 100644
--- a/drivers/char/random.c
+++ b/drivers/char/random.c
@@ -1781,6 +1781,8 @@ static void __init init_std_data(struct entropy_store *r)
if (!arch_get_random_seed_long(&rv) &&
!arch_get_random_long(&rv))
rv = random_get_entropy();
+ else
+ credit_entropy_bits(r, 1);
mix_pool_bytes(r, &rv, sizeof(rv));
}
mix_pool_bytes(r, utsname(), sizeof(*(utsname())));
--
https://clearlinux.org
|
