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Disable mdraid < 1.1 on ppc64le

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Signed-off-by: Robbie Harwood <rharwood@redhat.com>
This commit is contained in:
Robbie Harwood 2023-01-31 18:54:07 +00:00
parent f8f88e1235
commit e4be65856a
2 changed files with 52 additions and 26 deletions
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73
0318-ppc64le-signed-boot-media-changes.patch
View file

@ -3,7 +3,7 @@ From: Robbie Harwood <rharwood@redhat.com>
Date: Wed, 25 Jan 2023 16:10:58 -0500
Subject: [PATCH] ppc64le: signed boot media changes
Skip diskfilter on isos since mdraid* can't even
Skip mdraid < 1.1 on isos since mdraid* can't even
Prior to this change, on ppc64le with part_msdos and the mdraid* modules
enabled, we see:
@ -32,38 +32,61 @@ These latter two lines repeat many times, eventually ending in:
and the system drops to a "grub>" prompt.
The firmware and the iso image appear to diagree on the blocksize (512
vs. 2048), and the diskfilter RAID probing is too much for it. We won't
be seeing RAID on bootable CDs, so just turn it off.
Prior to 1.1, mdraid stored the superblock offset from the end of the
disk, and the firmware really doesn't like reads there. Best guess was
that the firmware and the iso image appear to diagree on the blocksize
(512 vs. 2048), and the diskfilter RAID probing is too much for it.
It's tempting to just skip probing for cdroms, but unfortunately isos
can be virtualized elsewhere - such as regular disks.
Fix detection of root.
Try the chrp path as a fallback if the built prefix doesn't work.
Also fix detection of root, and try the chrp path as a fallback if the
built prefix doesn't work.
Signed-off-by: Robbie Harwood <rharwood@redhat.com>
wip
---
grub-core/disk/diskfilter.c | 6 ++++++
grub-core/disk/mdraid1x_linux.c | 8 +++++++-
grub-core/disk/mdraid_linux.c | 5 +++++
grub-core/kern/ieee1275/openfw.c | 2 +-
grub-core/normal/main.c | 5 +++++
3 files changed, 12 insertions(+), 1 deletion(-)
4 files changed, 18 insertions(+), 2 deletions(-)
diff --git a/grub-core/disk/diskfilter.c b/grub-core/disk/diskfilter.c
index 7cdffe3ebd..68c836fc64 100644
--- a/grub-core/disk/diskfilter.c
+++ b/grub-core/disk/diskfilter.c
@@ -139,6 +139,12 @@ scan_disk_partition_iter (grub_disk_t disk, grub_partition_t p, void *data)
grub_util_info ("Scanning for DISKFILTER devices on disk %s", name);
#endif
+ if (p != NULL && (p->parent == NULL || p->parent->len == 0))
+ {
+ grub_dprintf ("diskfilter", "skipping %s due to unknown parent partition length", name);
+ return 0;
+ }
diff --git a/grub-core/disk/mdraid1x_linux.c b/grub-core/disk/mdraid1x_linux.c
index 38444b02c7..08c57ae16e 100644
--- a/grub-core/disk/mdraid1x_linux.c
+++ b/grub-core/disk/mdraid1x_linux.c
@@ -129,7 +129,13 @@ grub_mdraid_detect (grub_disk_t disk,
grub_uint32_t level;
struct grub_diskfilter_vg *array;
char *uuid;
-
+
disk->partition = p;
for (arr = array_list; arr != NULL; arr = arr->next)
+#ifdef __powerpc__
+ /* Firmware will yell at us for reading too far. */
+ if (minor_version == 0)
+ continue;
+#endif
+
if (size == GRUB_DISK_SIZE_UNKNOWN && minor_version == 0)
continue;
diff --git a/grub-core/disk/mdraid_linux.c b/grub-core/disk/mdraid_linux.c
index e40216f511..98fcfb1be6 100644
--- a/grub-core/disk/mdraid_linux.c
+++ b/grub-core/disk/mdraid_linux.c
@@ -189,6 +189,11 @@ grub_mdraid_detect (grub_disk_t disk,
grub_uint32_t level;
struct grub_diskfilter_vg *ret;
+#ifdef __powerpc__
+ /* Firmware will yell at us for reading too far. */
+ return NULL;
+#endif
+
/* The sector where the mdraid 0.90 superblock is stored, if available. */
size = grub_disk_native_sectors (disk);
if (size == GRUB_DISK_SIZE_UNKNOWN)
diff --git a/grub-core/kern/ieee1275/openfw.c b/grub-core/kern/ieee1275/openfw.c
index 3a6689abb1..0278054c61 100644
--- a/grub-core/kern/ieee1275/openfw.c

5
grub2.spec
View file

@ -17,7 +17,7 @@
Name: grub2
Epoch: 1
Version: 2.06
Release: 78%{?dist}
Release: 79%{?dist}
Summary: Bootloader with support for Linux, Multiboot and more
License: GPLv3+
URL: http://www.gnu.org/software/grub/
@ -544,6 +544,9 @@ mv ${EFI_HOME}/grub.cfg.stb ${EFI_HOME}/grub.cfg
%endif
%changelog
* Tue Jan 31 2023 Robbie Harwood <rharwood@redhat.com> - 2.06-79
- Disable mdraid < 1.1 on ppc64le
* Fri Jan 27 2023 Robbie Harwood <rharwood@redhat.com> - 2.06-78
- Fix grub2-probe issue with previous commit
- Resolves: #2165136