diff options
| author | David Woodhouse <dwmw@amazon.co.uk> | 2021-01-06 18:39:56 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2021-01-27 13:47:45 +0300 |
| commit | 5fa6987258a757a9fae70ff28188dff07f01bf50 (patch) | |
| tree | 1c50b34da76ec2703d82d0dc7e8f57d927cf99a8 /Documentation | |
| parent | a09d4e7acdbf276b2096661ee82454ae3dd24d2b (diff) | |
| download | linux-5fa6987258a757a9fae70ff28188dff07f01bf50.tar.xz | |
x86/xen: Add xen_no_vector_callback option to test PCI INTX delivery
[ Upstream commit b36b0fe96af13460278bf9b173beced1bd15f85d ]
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>
Signed-off-by: Sasha Levin <sashal@kernel.org>
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 74ba077e99e5..a19ae163c058 100644 --- a/Documentation/admin-guide/kernel-parameters.txt +++ b/Documentation/admin-guide/kernel-parameters.txt @@ -5452,6 +5452,10 @@ 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 |