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Daniel P. Berrangé 8b1dac1ad5 hw/char/sclpconsole-lm: skip automatic zero-init of large array 
The 'process_mdb' method has a 4k byte array used for copying data
between the guest and the chardev backend. Skip the automatic zero-init
of this array to eliminate the performance overhead in the I/O hot
path.

The 'buffer' array will be selectively initialized when data is converted
between EBCDIC and ASCII.

Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Message-id: 20250610123709.835102-15-berrange@redhat.com
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2025-06-12 13:40:15 -04:00
..
avr_usart.c qom: Have class_init() take a const data argument 2025-04-25 17:00:41 +02:00
bcm2835_aux.c qom: Have class_init() take a const data argument 2025-04-25 17:00:41 +02:00
cadence_uart.c qom: Have class_init() take a const data argument 2025-04-25 17:00:41 +02:00
cmsdk-apb-uart.c qom: Have class_init() take a const data argument 2025-04-25 17:00:41 +02:00
debugcon.c qom: Have class_init() take a const data argument 2025-04-25 17:00:41 +02:00
digic-uart.c qom: Have class_init() take a const data argument 2025-04-25 17:00:41 +02:00
diva-gsp.c hw/char/serial: Remove unused prog_if compat property 2025-05-02 21:49:32 +02:00
escc.c qom: Have class_init() take a const data argument 2025-04-25 17:00:41 +02:00
exynos4210_uart.c qom: Have class_init() take a const data argument 2025-04-25 17:00:41 +02:00
goldfish_tty.c qom: Have class_init() take a const data argument 2025-04-25 17:00:41 +02:00
grlib_apbuart.c qom: Have class_init() take a const data argument 2025-04-25 17:00:41 +02:00
ibex_uart.c qom: Have class_init() take a const data argument 2025-04-25 17:00:41 +02:00
imx_serial.c qom: Have class_init() take a const data argument 2025-04-25 17:00:41 +02:00
ipoctal232.c qom: Have class_init() take a const data argument 2025-04-25 17:00:41 +02:00
Kconfig rust: Kconfig: Factor out whether PL011 is Rust or C 2025-03-20 09:23:18 +01:00
mcf_uart.c qom: Have class_init() take a const data argument 2025-04-25 17:00:41 +02:00
mchp_pfsoc_mmuart.c qom: Have class_init() take a const data argument 2025-04-25 17:00:41 +02:00
meson.build rust: Kconfig: Factor out whether PL011 is Rust or C 2025-03-20 09:23:18 +01:00
nrf51_uart.c qom: Have class_init() take a const data argument 2025-04-25 17:00:41 +02:00
omap_uart.c include/system: Move exec/address-spaces.h to system/address-spaces.h 2025-04-23 14:08:21 -07:00
parallel-isa.c include: Rename sysemu/ -> system/ 2024-12-20 17:44:56 +01:00
parallel.c qom: Make InterfaceInfo[] uses const 2025-04-25 17:00:41 +02:00
pl011.c qom: Have class_init() take a const data argument 2025-04-25 17:00:41 +02:00
renesas_sci.c qom: Have class_init() take a const data argument 2025-04-25 17:00:41 +02:00
riscv_htif.c include/system: Move exec/address-spaces.h to system/address-spaces.h 2025-04-23 14:08:21 -07:00
sclpconsole-lm.c hw/char/sclpconsole-lm: skip automatic zero-init of large array 2025-06-12 13:40:15 -04:00
sclpconsole.c qom: Have class_init() take a const data argument 2025-04-25 17:00:41 +02:00
serial-isa.c qom: Make InterfaceInfo[] uses const 2025-04-25 17:00:41 +02:00
serial-mm.c qom: Have class_init() take a const data argument 2025-04-25 17:00:41 +02:00
serial-pci-multi.c hw/char/serial: Remove unused prog_if compat property 2025-05-02 21:49:32 +02:00
serial-pci.c hw/char/serial: Remove unused prog_if compat property 2025-05-02 21:49:32 +02:00
serial.c qom: Have class_init() take a const data argument 2025-04-25 17:00:41 +02:00
sh_serial.c hw/char/sh_serial: Convert to TypeInfo 2025-06-10 10:58:59 +02:00
shakti_uart.c qom: Have class_init() take a const data argument 2025-04-25 17:00:41 +02:00
sifive_uart.c qom: Have class_init() take a const data argument 2025-04-25 17:00:41 +02:00
spapr_vty.c qom: Have class_init() take a const data argument 2025-04-25 17:00:41 +02:00
stm32f2xx_usart.c qom: Have class_init() take a const data argument 2025-04-25 17:00:41 +02:00
stm32l4x5_usart.c qom: Have class_init() take a const data argument 2025-04-25 17:00:41 +02:00
terminal3270.c qom: Have class_init() take a const data argument 2025-04-25 17:00:41 +02:00
trace-events hw/char/pl011: Improve RX flow tracing events 2025-03-04 14:45:34 +01:00
trace.h trace: switch position of headers to what Meson requires 2020-08-21 06:18:24 -04:00
virtio-console.c qom: Have class_init() take a const data argument 2025-04-25 17:00:41 +02:00
virtio-serial-bus.c vhost-user: return failure if backend crash when live migration 2025-05-14 05:39:15 -04:00
xen_console.c qom: Have class_init() take a const data argument 2025-04-25 17:00:41 +02:00
xilinx_uartlite.c qom: Have class_init() take a const data argument 2025-04-25 17:00:41 +02:00