50a9ff6df4
The kernel is moved ahead to version 3.10.0-693.21.1.el7 To summarize: CVE-2017-5753 [bounds check bypass] aka 'Spectre Variant 1' This is fixed by load fences and is "baked in" and cannot be turned off. CVE-2017-5715 [branch target injection] aka 'Spectre Variant 2' This is fixed by a combination of retpolines and IBPB, or IBRS+IBPB if on skylake. This requires a microcode change in the processors. This feature, if on, has a significant performance impact. It is assumed on unless turned off via the "nospectre_v2" bootarg. CVE-2017-5754 [rogue data cache load] aka 'Meltdown' aka 'Variant 3' This is fixed by page table isolation using the Kaiser patches. This feature is assumed on unless turned off via the "nopti" bootarg. As of the commit date, we have changed the installer kickstarts to issue both "nopti nospectre_v2" bootargs to minimize realtime impacts by default. The customer will be able to optionally sacrifice performance for extra security at datafill time. Change-Id: Id7c99923f2ee2ee91f77c7bd9940e684eff8b476 Signed-off-by: Jim Somerville <Jim.Somerville@windriver.com>
38 lines
1.3 KiB
Diff
38 lines
1.3 KiB
Diff
From bfce6a674ed9879b29ad1f832ed5f01cd4113c42 Mon Sep 17 00:00:00 2001
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Message-Id: <bfce6a674ed9879b29ad1f832ed5f01cd4113c42.1522795097.git.Jim.Somerville@windriver.com>
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In-Reply-To: <21c11de06542297206c798b405b54a3ec9052aa4.1522795097.git.Jim.Somerville@windriver.com>
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References: <21c11de06542297206c798b405b54a3ec9052aa4.1522795097.git.Jim.Somerville@windriver.com>
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From: Chris Friesen <chris.friesen@windriver.com>
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Date: Thu, 12 May 2016 18:00:00 -0400
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Subject: [PATCH 09/33] Make kernel start eth devices at offset
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In order to avoid naming collisions, we want to make the kernel
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start naming its "ethX" devices at eth1000 instead of eth0. This
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will let us rename to a range starting at eth0.
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Signed-off-by: Jim Somerville <Jim.Somerville@windriver.com>
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---
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net/core/dev.c | 6 ++++++
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1 file changed, 6 insertions(+)
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diff --git a/net/core/dev.c b/net/core/dev.c
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index 82c06bc..5324eb6 100644
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--- a/net/core/dev.c
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+++ b/net/core/dev.c
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@@ -1057,6 +1057,12 @@ static int __dev_alloc_name(struct net *net, const char *name, char *buf)
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set_bit(i, inuse);
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}
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+ /* WRS extension, want kernel to start at eth1000 */
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+ if (strcmp(name, "eth%d") == 0) {
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+ for (i=0; i < 1000; i++)
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+ set_bit(i, inuse);
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+ }
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+
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i = find_first_zero_bit(inuse, max_netdevices);
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free_page((unsigned long) inuse);
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}
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--
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1.8.3.1
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