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From 5cc978db25b2c92707f68b15098ac39901fb5aac 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 120/124] 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 d6876d506220..fca09af81b2c 100644
--- a/drivers/char/random.c
+++ b/drivers/char/random.c
@@ -1638,6 +1638,8 @@ static void 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())));
--
2.11.1
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