[Xen-devel] [PATCH 1/2] x86/boot: fix early error display

[Doug Goldstein <cardoe@xxxxxxxxxx>]

From: David Esler <drumandstrum@xxxxxxxxx>

In 9180f5365524 a change was made to the send_chr function to take in
C-strings and print out a character at a time until a NULL was
encountered. However there is no code to increment the current character
position resulting in an endless loop of the first character. This adds
a simple increment.

Reviewed-by: Doug Goldstein <cardoe@xxxxxxxxxx>
Signed-off-by: David Esler <drumandstrum@xxxxxxxxx>
---
 xen/arch/x86/boot/head.S | 1 +
 1 file changed, 1 insertion(+)

diff --git a/xen/arch/x86/boot/head.S b/xen/arch/x86/boot/head.S
index fd6fc337fe..f48bbbd2e5 100644
--- a/xen/arch/x86/boot/head.S
+++ b/xen/arch/x86/boot/head.S
@@ -174,6 +174,7 @@ not_multiboot:
         mov     sym_esi(vga_text_buffer),%edi
 .Lsend_chr:
         mov     (%esi),%bl
+        inc     %esi
         test    %bl,%bl        # Terminate on '\0' sentinel
         je      .Lhalt
         mov     $0x3f8+5,%dx   # UART Line Status Register
-- 
2.13.5


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