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| author | David Woodhouse <dwmw@amazon.co.uk> | 2021-01-06 15:39:56 +0000 |
|---|---|---|
| committer | Juergen Gross <jgross@suse.com> | 2021-01-13 16:12:06 +0100 |
| commit | b36b0fe96af13460278bf9b173beced1bd15f85d (patch) | |
| tree | f0f96ae68922154c71cf08bcb200cb10eeb34e4c /Documentation | |
| parent | 8f4fd86aa5d6aa122619623910065d236592e37c (diff) | |
| download | lwn-b36b0fe96af13460278bf9b173beced1bd15f85d.tar.gz lwn-b36b0fe96af13460278bf9b173beced1bd15f85d.zip | |
x86/xen: Add xen_no_vector_callback option to test PCI INTX delivery
It's useful to be able to test non-vector event channel delivery, to make
sure Linux will work properly on older Xen which doesn't have it.
It's also useful for those working on Xen and Xen-compatible hypervisors,
because there are guest kernels still in active use which use PCI INTX
even when vector delivery is available.
Signed-off-by: David Woodhouse <dwmw@amazon.co.uk>
Reviewed-by: Boris Ostrovsky <boris.ostrovsky@oracle.com>
Link: https://lore.kernel.org/r/20210106153958.584169-4-dwmw2@infradead.org
Signed-off-by: Juergen Gross <jgross@suse.com>
Diffstat (limited to 'Documentation')
| -rw-r--r-- | Documentation/admin-guide/kernel-parameters.txt | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/Documentation/admin-guide/kernel-parameters.txt b/Documentation/admin-guide/kernel-parameters.txt index 44fde25bb221..035d27b6272c 100644 --- a/Documentation/admin-guide/kernel-parameters.txt +++ b/Documentation/admin-guide/kernel-parameters.txt @@ -5964,6 +5964,10 @@ This option is obsoleted by the "nopv" option, which has equivalent effect for XEN platform. + xen_no_vector_callback + [KNL,X86,XEN] Disable the vector callback for Xen + event channel interrupts. + xen_scrub_pages= [XEN] Boolean option to control scrubbing pages before giving them back to Xen, for use by other domains. Can be also changed at runtime |