e1531466e1
This change updates grub to the 2.04 release. The new release changed how grub is built, so the bootstrap and bootstrap.conf files have to be added to the dist-git. Also, the gitignore file changed so it has to be updated. Since the patches have been forward ported to 2.04, there's no need for a logic to maintain a patch with the delta between the release and the grub master branch. So the release-to-master.patch is dropped and no longer is updated by the do-rebase script. Also since gnulib isn't part of the grub repository anymore and cloned by the boostrap tool, a gnulib tarball is included as other source file and copied before calling the bootstrap tool. That way grub can be built even in builders that only have access to the sources lookaside cache. Resolves: rhbz#1727279 Signed-off-by: Javier Martinez Canillas <javierm@redhat.com>
46 lines
2.3 KiB
Diff
46 lines
2.3 KiB
Diff
From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
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From: Masahiro Matsuya <mmatsuya@redhat.com>
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Date: Sat, 29 Oct 2016 08:35:26 +0900
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Subject: [PATCH] bz1374141 fix incorrect mask for ppc64
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The netmask configured in firmware is not respected on ppc64 (big endian).
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When 255.255.252.0 is set as netmask in firmware, the following is the value of bootpath string in grub_ieee1275_parse_bootpath().
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/vdevice/l-lan@30000002:speed=auto,duplex=auto,192.168.88.10,,192.168.89.113,192.168.88.1,5,5,255.255.252.0,512
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The netmask in this bootpath is no problem, since it's a value specified in firmware. But,
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The value of 'subnet_mask.ipv4' was set with 0xfffffc00, and __builtin_ctz (~grub_le_to_cpu32 (subnet_mask.ipv4)) returned 16 (not 22).
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As a result, 16 was used for netmask wrongly.
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1111 1111 1111 1111 1111 1100 0000 0000 # subnet_mask.ipv4 (=0xfffffc00)
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0000 0000 1111 1100 1111 1111 1111 1111 # grub_le_to_cpu32 (subnet_mask.ipv4)
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1111 1111 0000 0011 0000 0000 0000 0000 # ~grub_le_to_cpu32 (subnet_mask.ipv4)
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And, the count of zero with __builtin_ctz can be 16.
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This patch changes it as below.
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1111 1111 1111 1111 1111 1100 0000 0000 # subnet_mask.ipv4 (=0xfffffc00)
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0000 0000 1111 1100 1111 1111 1111 1111 # grub_le_to_cpu32 (subnet_mask.ipv4)
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1111 1111 1111 1111 1111 1100 0000 0000 # grub_swap_bytes32(grub_le_to_cpu32 (subnet_mask.ipv4))
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0000 0000 0000 0000 0000 0011 1111 1111 # ~grub_swap_bytes32(grub_le_to_cpu32 (subnet_mask.ipv4))
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The count of zero with __builtin_clz can be 22. (clz counts the number of one bits preceding the most significant zero bit)
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---
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grub-core/net/drivers/ieee1275/ofnet.c | 3 +--
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1 file changed, 1 insertion(+), 2 deletions(-)
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diff --git a/grub-core/net/drivers/ieee1275/ofnet.c b/grub-core/net/drivers/ieee1275/ofnet.c
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index ac4e62a95c9..3860b6f78d8 100644
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--- a/grub-core/net/drivers/ieee1275/ofnet.c
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+++ b/grub-core/net/drivers/ieee1275/ofnet.c
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@@ -220,8 +220,7 @@ grub_ieee1275_parse_bootpath (const char *devpath, char *bootpath,
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flags);
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inter->vlantag = vlantag;
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grub_net_add_ipv4_local (inter,
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- __builtin_ctz (~grub_le_to_cpu32 (subnet_mask.ipv4)));
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-
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+ __builtin_clz (~grub_swap_bytes32(grub_le_to_cpu32 (subnet_mask.ipv4))));
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}
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if (gateway_addr.ipv4 != 0)
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