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| author | Jan Beulich <jbeulich@suse.com> | 2021-09-30 14:17:41 +0200 |
|---|---|---|
| committer | Juergen Gross <jgross@suse.com> | 2021-10-05 08:36:00 +0200 |
| commit | adf330a7cd64a8bb959dc48a9c282285c1d5b4d5 (patch) | |
| tree | 5388e0c7393cba01e0c544dcb5cc75bbe35642b8 /Documentation/driver-api/pm | |
| parent | xen/x86: allow PVH Dom0 without XEN_PV=y (diff) | |
| download | linux-adf330a7cd64a8bb959dc48a9c282285c1d5b4d5.tar.xz linux-adf330a7cd64a8bb959dc48a9c282285c1d5b4d5.zip | |
xen/x86: make "earlyprintk=xen" work better for PVH Dom0
The xen_hvm_early_write() path better wouldn't be taken in this case;
while port 0xE9 can be used, the hypercall path is quite a bit more
efficient. Put that first, as it may also work for DomU-s (see also
xen_raw_console_write()).
While there also bail from the function when the first
domU_write_console() failed - later ones aren't going to succeed.
Signed-off-by: Jan Beulich <jbeulich@suse.com>
Reviewed-by: Juergen Gross <jgross@suse.com>
Link: https://lore.kernel.org/r/4fd89dcb-cfc5-c740-2e94-bb271e432d3e@suse.com
Signed-off-by: Juergen Gross <jgross@suse.com>
Diffstat (limited to 'Documentation/driver-api/pm')
0 files changed, 0 insertions, 0 deletions