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zcryptstats: Add note about loading kernel module chsc_sch

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Dependent on kernel config option CHSC_SCH the device node /dev/chsc may
exist per default or not. In case the kernel is built with CHSC_SCH=M,
then the device driver is built as separate kernel module, and must
therefore be loaded using modprobe chsc_sch to make device node /dev/chsc
available.

Signed-off-by: Ingo Franzki <ifranzki@linux.ibm.com>
Signed-off-by: Jan Höppner <hoeppner@linux.ibm.com>
This commit is contained in:
Ingo Franzki
2019-07-18 15:57:39 +02:00
committed by Jan Höppner
parent 53f166673d
commit 784ac7d190
2 changed files with 9 additions and 0 deletions
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zconf/zcrypt/zcryptstats.8
+5
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@@ -72,6 +72,11 @@ the parallel execution of cryptographic operations.
Cryptographic performance measurement data might not be available when Linux
is running as guest under z/VM or under KVM. \fBzcryptstats\fP then displays an
error message and exits.
.PP
.B Note:
\fBzcryptstats\fP utilizes the device node \fB/dev/chsc\fP. When this device
node is not available, you might have to load kernel module \fBchsc_sch\fP using
\fBmodprobe chsc_sch\fP to make it available.
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