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No functional change intended. Signed-off-by: Roger Pau Monn=C3=A9 --- xen/drivers/char/Kconfig | 10 ++++++++++ xen/drivers/char/serial.c | 3 ++- 2 files changed, 12 insertions(+), 1 deletion(-) diff --git a/xen/drivers/char/Kconfig b/xen/drivers/char/Kconfig index e5f7b1d8eb..a349d55f18 100644 --- a/xen/drivers/char/Kconfig +++ b/xen/drivers/char/Kconfig @@ -74,3 +74,13 @@ config HAS_EHCI help This selects the USB based EHCI debug port to be used as a UART. If you have an x86 based system with USB, say Y. + +config SERIAL_TX_BUFSIZE + int "Size of the transmit serial buffer" + default 16384 + help + Controls the default size of the transmit buffer (in bytes) used by + the serial driver. 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Increasing the buffer to 32K does fix the issue and Linux boot messages are no longer dropped. There's no justification either on why 16K was chosen, and hence bumping to 32K in order to cope with current systems generating output faster does seem appropriate to have a better user experience with the provided defaults. Signed-off-by: Roger Pau Monn=C3=A9 --- xen/drivers/char/Kconfig | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/xen/drivers/char/Kconfig b/xen/drivers/char/Kconfig index a349d55f18..a8ac667ba2 100644 --- a/xen/drivers/char/Kconfig +++ b/xen/drivers/char/Kconfig @@ -77,10 +77,10 @@ config HAS_EHCI =20 config SERIAL_TX_BUFSIZE int "Size of the transmit serial buffer" - default 16384 + default 32768 help Controls the default size of the transmit buffer (in bytes) used by the serial driver. Note the value provided will be rounder up to PAGE_SIZE. =20 - Default value is 16384 (16KB). + Default value is 32768 (32KB). --=20 2.36.1