aboutsummaryrefslogtreecommitdiff
path: root/qemu-options.hx
diff options
context:
space:
mode:
Diffstat (limited to 'qemu-options.hx')
-rw-r--r--qemu-options.hx13
1 files changed, 10 insertions, 3 deletions
diff --git a/qemu-options.hx b/qemu-options.hx
index 0be16b4..30fb85d 100644
--- a/qemu-options.hx
+++ b/qemu-options.hx
@@ -2221,8 +2221,10 @@ DEFHEADING()
DEFHEADING(TPM device options:)
DEF("tpmdev", HAS_ARG, QEMU_OPTION_tpmdev, \
- "-tpmdev passthrough,id=id[,path=path]\n"
- " use path to provide path to a character device; default is /dev/tpm0\n",
+ "-tpmdev passthrough,id=id[,path=path][,cancel-path=path]\n"
+ " use path to provide path to a character device; default is /dev/tpm0\n"
+ " use cancel-path to provide path to TPM's cancel sysfs entry; if\n"
+ " not provided it will be searched for in /sys/class/misc/tpm?/device\n",
QEMU_ARCH_ALL)
STEXI
@@ -2244,7 +2246,7 @@ Use 'help' to print all available TPM backend types.
qemu -tpmdev help
@end example
-@item -tpmdev passthrough, id=@var{id}, path=@var{path}
+@item -tpmdev passthrough, id=@var{id}, path=@var{path}, cancel-path=@var{cancel-path}
(Linux-host only) Enable access to the host's TPM using the passthrough
driver.
@@ -2253,6 +2255,11 @@ driver.
a Linux host this would be @code{/dev/tpm0}.
@option{path} is optional and by default @code{/dev/tpm0} is used.
+@option{cancel-path} specifies the path to the host TPM device's sysfs
+entry allowing for cancellation of an ongoing TPM command.
+@option{cancel-path} is optional and by default QEMU will search for the
+sysfs entry to use.
+
Some notes about using the host's TPM with the passthrough driver:
The TPM device accessed by the passthrough driver must not be