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README.caveats: change version-specific RHEL mentions to RHEL 9

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It makes little sense in some places, but that is subject to some future
fixes.

Resolves: #1880064
Signed-off-by: Eugene Syromiatnikov <esyr@redhat.com>
This commit is contained in:
Eugene Syromiatnikov 2021-07-26 19:01:12 +02:00
parent 86fea180fd
commit 8c3a1d071c
1 changed files with 7 additions and 7 deletions
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README.caveats
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@ -10,8 +10,8 @@ behaviour.
General behaviour
=================
In RHEL 8 (as well as RHEL 7 before it), there are currently two main handlers
for CPU microcode update:
In RHEL 9 (as well as in RHEL 7 and RHEL 8 before it), there are currently
two main handlers for CPU microcode update:
* Early microcode update. It uses GenuineIntel.bin or AuthenticAMD.bin file
placed at the beginning of an initramfs image
(/boot/initramfs-KERNEL_VERSION.img, where "KERNEL_VERSION" is a kernel
@ -45,10 +45,10 @@ zero-filled.
The early microcode is placed into initramfs image by the "dracut" script, which
scans the aforementioned subdirectories of the configured list of firmware
directories (by default, the list consists of two directories in RHEL 8,
directories (by default, the list consists of two directories in RHEL 9,
"/lib/firmware/updates" and "/lib/firmware").
In RHEL 8, AMD CPU microcode is shipped as a part of the linux-firmware package,
In RHEL 9, AMD CPU microcode is shipped as a part of the linux-firmware package,
and Intel microcode is shipped as a part of the microcode_ctl package.
The microcode_ctl package currently includes the following:
@ -613,7 +613,7 @@ Mitigation: microcode loading is disabled for the affected CPU model.
Minimum versions of the kernel package that contain the aforementioned patch
series:
- Upstream/RHEL 8: 4.17.0
- Upstream/RHEL 8/RHEL 9: 4.17.0
- RHEL 7.6 onwards: 3.10.0-894
- RHEL 7.5: 3.10.0-862.6.1
- RHEL 7.4: 3.10.0-693.35.1
@ -628,7 +628,7 @@ series:
Early microcode load inside a virtual machine
---------------------------------------------
RHEL 8 kernel supports performing microcode update during early boot stage
RHEL 9 kernel supports performing microcode update during early boot stage
from a cpio archive placed at the beginning of the initramfs image. However,
when an early microcode update is attempted inside some virtualised
environments, that may result in unexpected system behaviour.
@ -643,7 +643,7 @@ Mitigation: early microcode loading is disabled for all CPU models on kernels
without the fix.
Minimum versions of the kernel package that contain the fix:
- Upstream/RHEL 8: 4.10.0
- Upstream/RHEL 8/RHEL 9: 4.10.0
- RHEL 7.6 onwards: 3.10.0-930
- RHEL 7.5: 3.10.0-862.14.1
- RHEL 7.4: 3.10.0-693.38.1