The patch titled
From: Jeremy Fitzhardinge <jeremy@xxxxxxxx>
has been added to the -mm tree. Its filename is
xen-paravirt_ops-add-early-printk-support-via-hvc-console.patch
*** Remember to use Documentation/SubmitChecklist when testing your code ***
See http://www.zip.com.au/~akpm/linux/patches/stuff/added-to-mm.txt to find
out what to do about this
------------------------------------------------------
Subject: From: Jeremy Fitzhardinge <jeremy@xxxxxxxx>
From: Gerd Hoffmann <kraxel@xxxxxxx>
Add early printk support via hvc console, enable using
"earlyprintk=xen" on the kernel command line.
Signed-off-by: Jeremy Fitzhardinge <jeremy@xxxxxxxxxxxxx>
---
===================================================================
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
arch/x86_64/kernel/early_printk.c | 8 ++++++++
drivers/xen/hvc-console.c | 24 ++++++++++++++++++++++++
2 files changed, 32 insertions(+)
diff -puN arch/x86_64/kernel/early_printk.c~xen-paravirt_ops-add-early-printk-support-via-hvc-console arch/x86_64/kernel/early_printk.c
--- a/arch/x86_64/kernel/early_printk.c~xen-paravirt_ops-add-early-printk-support-via-hvc-console
+++ a/arch/x86_64/kernel/early_printk.c
@@ -197,6 +197,10 @@ static struct console simnow_console = {
.index = -1,
};
+#ifdef CONFIG_XEN
+extern struct console xenboot_console;
+#endif
+
/* Direct interface for emergencies */
struct console *early_console = &early_vga_console;
static int early_console_initialized = 0;
@@ -243,6 +247,10 @@ static int __init setup_early_printk(cha
simnow_init(buf + 6);
early_console = &simnow_console;
keep_early = 1;
+#ifdef CONFIG_XEN
+ } else if (!strncmp(buf, "xen", 3)) {
+ early_console = &xenboot_console;
+#endif
}
if (keep_early)
diff -puN drivers/xen/hvc-console.c~xen-paravirt_ops-add-early-printk-support-via-hvc-console drivers/xen/hvc-console.c
--- a/drivers/xen/hvc-console.c~xen-paravirt_ops-add-early-printk-support-via-hvc-console
+++ a/drivers/xen/hvc-console.c
@@ -132,3 +132,27 @@ static int xen_cons_init(void)
module_init(xen_init);
module_exit(xen_fini);
console_initcall(xen_cons_init);
+
+static void xenboot_write_console(struct console *console, const char *string,
+ unsigned len)
+{
+ unsigned int linelen, off = 0;
+ const char *pos;
+
+ while (off < len && NULL != (pos = strchr(string+off, '\n'))) {
+ linelen = pos-string+off;
+ if (off + linelen > len)
+ break;
+ write_console(0, string+off, linelen);
+ write_console(0, "\r\n", 2);
+ off += linelen + 1;
+ }
+ if (off < len)
+ write_console(0, string+off, len-off);
+}
+
+struct console xenboot_console = {
+ .name = "xenboot",
+ .write = xenboot_write_console,
+ .flags = CON_PRINTBUFFER | CON_BOOT,
+};
_
Patches currently in -mm which might be from jeremy@xxxxxxxx are
xen-paravirt_ops-no-need-to-use-traditional-for-processing-asm-in-arch-i386.patch
xen-paravirt_ops-clean-up-elf-note-generation.patch
xen-paravirt_ops-fix-typo-in-sync_constant_test_bits-name.patch
xen-paravirt_ops-ignore-vgacon-if-hardware-not-present.patch
xen-paravirt_ops-add-pagetable-accessors-to-pack-and-unpack-pagetable-entries.patch
xen-paravirt_ops-paravirt_ops-hooks-to-set-up-initial-pagetable.patch
xen-paravirt_ops-paravirt_ops-allocate-a-fixmap-slot.patch
xen-paravirt_ops-allow-paravirt-backend-to-choose-kernel-pmd-sharing.patch
xen-paravirt_ops-add-hooks-to-intercept-mm-creation-and-destruction.patch
xen-paravirt_ops-remove-have_arch_mm_lifetime-define-no-op-architecture-implementations.patch
xen-paravirt_ops-add-apply_to_page_range-which-applies-a-function-to-a-pte-range.patch
xen-paravirt_ops-allocate-and-free-vmalloc-areas.patch
xen-paravirt_ops-add-nosegneg-capability-to-the-vsyscall-page-notes.patch
xen-paravirt_ops-add-xen-config-options.patch
xen-paravirt_ops-add-xen-interface-header-files.patch
xen-paravirt_ops-core-xen-implementation.patch
xen-paravirt_ops-some-generic-early-printk-boot-console-fixups.patch
xen-paravirt_ops-use-the-hvc-console-infrastructure-for-xen-console.patch
xen-paravirt_ops-add-early-printk-support-via-hvc-console.patch
xen-paravirt_ops-add-xen-grant-table-support.patch
xen-paravirt_ops-add-the-xenbus-sysfs-and-virtual-device-hotplug-driver.patch
xen-paravirt_ops-add-xen-virtual-block-device-driver.patch
xen-paravirt_ops-add-the-xen-virtual-network-device-driver.patch
fixes-and-cleanups-for-earlyprintk-aka-boot-console.patch
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