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Subject[PATCH] xen/hvc-console: Make it work with HVM guests.
Date
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
---
drivers/tty/hvc/hvc_xen.c | 17 +++++++++++++++--
1 files changed, 15 insertions(+), 2 deletions(-)

diff --git a/drivers/tty/hvc/hvc_xen.c b/drivers/tty/hvc/hvc_xen.c
index e61c36c..513a79b 100644
--- a/drivers/tty/hvc/hvc_xen.c
+++ b/drivers/tty/hvc/hvc_xen.c
@@ -183,7 +183,7 @@ static int dom0_write_console(uint32_t vtermno, const char *str, int len)
{
int rc = HYPERVISOR_console_io(CONSOLEIO_write, len, (char *)str);
if (rc < 0)
- return 0;
+ return rc;

return len;
}
@@ -641,7 +641,20 @@ struct console xenboot_console = {

void xen_raw_console_write(const char *str)
{
- dom0_write_console(0, str, strlen(str));
+ ssize_t len = strlen(str);
+ int rc = 0;
+
+ if (xen_domain()) {
+ dom0_write_console(0, str, len);
+ if (rc == -ENOSYS && xen_hvm_domain())
+ goto outb_print;
+
+ } else if (xen_cpuid_base()) {
+ int i;
+outb_print:
+ for (i = 0; i < len; i++)
+ outb(str[i], 0xe9);
+ }
}

void xen_raw_printk(const char *fmt, ...)
--
1.7.7.6


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