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| author | James Morris <james.l.morris@oracle.com> | 2014-01-06 22:23:01 +1100 |
|---|---|---|
| committer | James Morris <james.l.morris@oracle.com> | 2014-01-06 22:23:01 +1100 |
| commit | 38fd2c202a3d82bc12430bce5789fa2c2a406f71 (patch) | |
| tree | a73513dbb015155f5236b391709b9083916b3136 /drivers/tty/hvc/hvc_xen.c | |
| parent | dcf4e392867bf98d50ad108ed7c2bfb941e8c33d (diff) | |
| parent | d6e0a2dd12f4067a5bcefb8bbd8ddbeff800afbc (diff) | |
Merge to v3.13-rc7 for prerequisite changes in the Xen code for TPM
Diffstat (limited to 'drivers/tty/hvc/hvc_xen.c')
| -rw-r--r-- | drivers/tty/hvc/hvc_xen.c | 20 |
1 files changed, 18 insertions, 2 deletions
diff --git a/drivers/tty/hvc/hvc_xen.c b/drivers/tty/hvc/hvc_xen.c index e61c36cbb86..636c9baad7a 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; } @@ -636,12 +636,28 @@ struct console xenboot_console = { .name = "xenboot", .write = xenboot_write_console, .flags = CON_PRINTBUFFER | CON_BOOT | CON_ANYTIME, + .index = -1, }; #endif /* CONFIG_EARLY_PRINTK */ 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()) { + rc = dom0_write_console(0, str, len); +#ifdef CONFIG_X86 + 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); +#endif + } } void xen_raw_printk(const char *fmt, ...) |