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[PATCH v8 4/7] xen/serial: switch txbuf runtime allocation to xvmalloc
- To: xen-devel@xxxxxxxxxxxxxxxxxxxx
- From: dmukhin@xxxxxxxx
- Date: Mon, 27 Jul 2026 23:50:46 -0700
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From: Denis Mukhin <dmukhin@xxxxxxxx>
Switch 'txbuf' allocation to xvmalloc_array() since there is no
hard requirement to have buffer physically contiguous.
Suggested-by: Jan Beulich <jbeulich@xxxxxxxx>
Signed-off-by: Denis Mukhin <dmukhin@xxxxxxxx>
---
Changes since v7:
- new patch
---
xen/drivers/char/serial.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/xen/drivers/char/serial.c b/xen/drivers/char/serial.c
index e3c356408987..cf0abf1893e5 100644
--- a/xen/drivers/char/serial.c
+++ b/xen/drivers/char/serial.c
@@ -12,6 +12,7 @@
#include <xen/param.h>
#include <xen/sections.h>
#include <xen/serial.h>
+#include <xen/xvmalloc.h>
#include <asm/processor.h>
@@ -524,8 +525,7 @@ void __init serial_async_transmit(struct serial_port *port)
serial_txbufsz = PAGE_SIZE;
while ( serial_txbufsz & (serial_txbufsz - 1) )
serial_txbufsz &= serial_txbufsz - 1;
- port->txbuf = alloc_xenheap_pages(
- get_order_from_bytes(serial_txbufsz), 0);
+ port->txbuf = xvmalloc_array(char, serial_txbufsz);
}
/*
--
2.54.0
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