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qemu/hw/usb
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Daniel P. Berrangé 14997d521d hw/usb/hcd-ohci: skip automatic zero-init of large array 
The 'ohci_service_iso_td' method has a 8k byte array used for copying
data between guest and host. Skip the automatic zero-init of this
array to eliminate the performance overhead in the I/O hot path.

The 'buf' array will be fully initialized when reading data from guest
memory.

Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Reviewed-by: Klaus Jensen <k.jensen@samsung.com>
Reviewed-by: Harsh Prateek Bora <harshpb@linux.ibm.com>
Message-id: 20250610123709.835102-27-berrange@redhat.com
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2025-06-12 13:40:16 -04:00
..
bus-stub.c include: Rename sysemu/ -> system/ 2024-12-20 17:44:56 +01:00
bus.c qom: Make InterfaceInfo[] uses const 2025-04-25 17:00:41 +02:00
canokey.c qom: Have class_init() take a const data argument 2025-04-25 17:00:41 +02:00
canokey.h hw/usb/canokey: Fix buffer overflow for OUT packet 2025-01-28 18:40:19 +00:00
ccid-card-emulated.c qom: Have class_init() take a const data argument 2025-04-25 17:00:41 +02:00
ccid-card-passthru.c qom: Have class_init() take a const data argument 2025-04-25 17:00:41 +02:00
ccid.h Use OBJECT_DECLARE_TYPE when possible 2020-09-18 14:12:32 -04:00
chipidea.c qom: Have class_init() take a const data argument 2025-04-25 17:00:41 +02:00
combined-packet.c usb: limit combined packets to 1 MiB (CVE-2021-3527) 2021-05-05 15:06:01 +02:00
core.c usb: add pcap support. 2021-01-22 14:51:35 +01:00
desc-msos.c hw/usb: Fix typo in comments and print 2021-09-01 06:37:13 +02:00
desc.c hw/usb: Silence compiler warnings in USB code when compiling with -Wshadow 2023-10-06 13:27:48 +02:00
desc.h usb: allow max 8192 bytes for desc 2022-01-13 10:22:37 +01:00
dev-audio.c qom: Have class_init() take a const data argument 2025-04-25 17:00:41 +02:00
dev-hid.c qom: Have class_init() take a const data argument 2025-04-25 17:00:41 +02:00
dev-hub.c qom: Have class_init() take a const data argument 2025-04-25 17:00:41 +02:00
dev-mtp.c qom: Have class_init() take a const data argument 2025-04-25 17:00:41 +02:00
dev-network.c qom: Have class_init() take a const data argument 2025-04-25 17:00:41 +02:00
dev-serial.c qom: Have class_init() take a const data argument 2025-04-25 17:00:41 +02:00
dev-smartcard-reader.c qom: Make InterfaceInfo[] uses const 2025-04-25 17:00:41 +02:00
dev-storage-bot.c qom: Have class_init() take a const data argument 2025-04-25 17:00:41 +02:00
dev-storage-classic.c qom: Have class_init() take a const data argument 2025-04-25 17:00:41 +02:00
dev-storage.c qom: Have class_init() take a const data argument 2025-04-25 17:00:41 +02:00
dev-uas.c qom: Have class_init() take a const data argument 2025-04-25 17:00:41 +02:00
dev-wacom.c qom: Have class_init() take a const data argument 2025-04-25 17:00:41 +02:00
hcd-dwc2.c qom: Have class_init() take a const data argument 2025-04-25 17:00:41 +02:00
hcd-dwc2.h include: Rename sysemu/ -> system/ 2024-12-20 17:44:56 +01:00
hcd-dwc3.c qom: Have class_init() take a const data argument 2025-04-25 17:00:41 +02:00
hcd-ehci-pci.c qom: Make InterfaceInfo[] uses const 2025-04-25 17:00:41 +02:00
hcd-ehci-sysbus.c qom: Have class_init() take a const data argument 2025-04-25 17:00:41 +02:00
hcd-ehci.c hw/usb/hcd-ehci: Fix debug printf format string 2025-01-31 19:36:44 +01:00
hcd-ehci.h include: Rename sysemu/ -> system/ 2024-12-20 17:44:56 +01:00
hcd-ohci-pci.c qom: Make InterfaceInfo[] uses const 2025-04-25 17:00:41 +02:00
hcd-ohci-sysbus.c qom: Have class_init() take a const data argument 2025-04-25 17:00:41 +02:00
hcd-ohci.c hw/usb/hcd-ohci: skip automatic zero-init of large array 2025-06-12 13:40:16 -04:00
hcd-ohci.h include: Rename sysemu/ -> system/ 2024-12-20 17:44:56 +01:00
hcd-uhci.c qom: Make InterfaceInfo[] uses const 2025-04-25 17:00:41 +02:00
hcd-uhci.h qom: Have class_init() take a const data argument 2025-04-25 17:00:41 +02:00
hcd-xhci-nec.c qom: Have class_init() take a const data argument 2025-04-25 17:00:41 +02:00
hcd-xhci-pci.c qom: Make InterfaceInfo[] uses const 2025-04-25 17:00:41 +02:00
hcd-xhci-pci.h hw/usb/hcd-xhci-pci: Adds property for disabling mapping in IRQ mode 2025-03-04 14:45:34 +01:00
hcd-xhci-sysbus.c qom: Have class_init() take a const data argument 2025-04-25 17:00:41 +02:00
hcd-xhci-sysbus.h usb/xhci: add include/hw/usb/xhci.h header file 2020-10-21 11:36:19 +02:00
hcd-xhci.c hw/usb/hcd-xhci: Unmap canceled packet 2025-04-25 17:00:42 +02:00
hcd-xhci.h hw/usb/hcd-xhci-pci: Adds property for disabling mapping in IRQ mode 2025-03-04 14:45:34 +01:00
host-libusb.c qom: Have class_init() take a const data argument 2025-04-25 17:00:41 +02:00
imx-usb-phy.c qom: Have class_init() take a const data argument 2025-04-25 17:00:41 +02:00
Kconfig Kconfig: Extract CONFIG_USB_CHIPIDEA from CONFIG_IMX 2025-02-20 14:20:29 +00:00
libhw.c include: Rename sysemu/ -> system/ 2024-12-20 17:44:56 +01:00
meson.build Kconfig: Extract CONFIG_USB_CHIPIDEA from CONFIG_IMX 2025-02-20 14:20:29 +00:00
pcap.c usb/pcap: set flag_setup 2021-02-17 14:29:12 +01:00
quirks-ftdi-ids.h hw/usb: Fix typo in comments and print 2021-09-01 06:37:13 +02:00
quirks-pl2303-ids.h hw/usb: fix tab indentation 2022-11-08 11:13:48 +01:00
quirks.c hw/usb/quirks: Use smaller types to reduce .rodata by 10KiB 2020-03-16 23:02:25 +01:00
quirks.h hw/usb: spelling fixes 2023-08-31 19:47:43 +02:00
redirect.c qom: Have class_init() take a const data argument 2025-04-25 17:00:41 +02:00
trace-events hw/usb/hcd-ohci: Fix ohci_service_td: accept zero-length TDs where CBP=BE+1 2024-06-21 16:20:45 +01:00
trace.h trace: switch position of headers to what Meson requires 2020-08-21 06:18:24 -04:00
u2f-emulated.c qom: Have class_init() take a const data argument 2025-04-25 17:00:41 +02:00
u2f-passthru.c qom: Have class_init() take a const data argument 2025-04-25 17:00:41 +02:00
u2f.c qom: Have class_init() take a const data argument 2025-04-25 17:00:41 +02:00
u2f.h hw/usb/u2f: Declare QOM macros using OBJECT_DECLARE_TYPE() 2023-02-27 22:29:02 +01:00
vt82c686-uhci-pci.c hw/usb/vt82c686-uhci-pci: Use ISA instead of PCI interrupts 2023-11-28 14:26:37 +01:00
xen-usb.c hw/xen: Prefer QOM cast for XenLegacyDevice 2025-02-16 14:25:08 +01:00
xlnx-usb-subsystem.c qom: Have class_init() take a const data argument 2025-04-25 17:00:41 +02:00
xlnx-versal-usb2-ctrl-regs.c qom: Have class_init() take a const data argument 2025-04-25 17:00:41 +02:00