[SeaBIOS] [PATCH] Update qemu_cfg_read to use "rep insb".
Kevin O'Connor
kevin at koconnor.net
Thu Aug 26 03:46:12 CEST 2010
Use rep insb instead of manual loop - the host may be able to optimize
the rep insb instruction.
---
src/paravirt.c | 3 +--
1 files changed, 1 insertions(+), 2 deletions(-)
diff --git a/src/paravirt.c b/src/paravirt.c
index da72c71..ca646d4 100644
--- a/src/paravirt.c
+++ b/src/paravirt.c
@@ -24,8 +24,7 @@ qemu_cfg_select(u16 f)
static void
qemu_cfg_read(u8 *buf, int len)
{
- while (len--)
- *(buf++) = inb(PORT_QEMU_CFG_DATA);
+ insb(PORT_QEMU_CFG_DATA, buf, len);
}
static void
--
1.7.2.2
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