[PATCH 1/1] qemu_tpm: Start swtpm(8) daemon with --terminate switch

Nick Chevsky nchevsky at gmail.com
Mon Sep 13 06:16:18 UTC 2021


Launch swtpm(8) with the --terminate switch, which guarantees that
the daemon will shut itself down when QEMU dies (current behavior).
We had so far been getting this "for free" (i.e. without --terminate)
due to a defect in upstream's connection handling logic [1], on which
libvirt should not rely since it will eventually be fixed. Adding
--terminate preserves and guarantees the current behavior.

[1] https://github.com/stefanberger/swtpm/pull/509

Signed-off-by: Nick Chevsky <nchevsky at gmail.com>
---
 src/qemu/qemu_tpm.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/src/qemu/qemu_tpm.c b/src/qemu/qemu_tpm.c
index 477a26dc69..100481503c 100644
--- a/src/qemu/qemu_tpm.c
+++ b/src/qemu/qemu_tpm.c
@@ -576,6 +576,8 @@ qemuTPMEmulatorBuildCommand(virDomainTPMDef *tpm,
     virCommandAddArg(cmd, "--log");
     virCommandAddArgFormat(cmd, "file=%s", tpm->data.emulator.logfile);
 
+    virCommandAddArg(cmd, "--terminate");
+
     virCommandSetUID(cmd, swtpm_user);
     virCommandSetGID(cmd, swtpm_group);
 
-- 
2.30.2





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