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readme: document -dbgsym package

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Signed-off-by: Fabian Grünbichler <f.gruenbichler@proxmox.com>
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Fabian Grünbichler 2021-07-21 14:10:41 +02:00 committed by Thomas Lamprecht
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README
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@ -98,6 +98,18 @@ which device is actually used for /dev/watchdog.
We ship this list in /lib/modprobe.d/blacklist_pve-kernel-<VERSION>.conf
The user typically edit /etc/modules to enable a specific watchdog device.
Debug kernel and modules
------------------------
In order to build a -dbgsym package containing an unstripped copy of the kernel
image and modules, enable the 'pkg.pve-kernel.debug' build profile (e.g. by
exporting DEB_BUILD_PROFILES='pkg.pve-kernel.debug'). The resulting package can
be used together with 'crash'/'kdump-tools' to debug kernel crashes.
Note: the -dbgsym package is only valid for the pve-kernel packages produced by
the same build. A kernel/module from a different build will likely not match,
even if both builds are of the same kernel and package version.
Additional information
----------------------