Ilya Maximets 850cd20b07 virtio: use shadow_avail_idx while checking number of heads ... We do not need the most up to date number of heads, we only want to know if there is at least one. Use shadow variable as long as it is not equal to the last available index checked. This avoids expensive qatomic dereference of the RCU-protected memory region cache as well as the memory access itself. The change improves performance of the af-xdp network backend by 2-3%. Signed-off-by: Ilya Maximets <i.maximets@ovn.org> Message-Id: <20230927135157.2316982-1-i.maximets@ovn.org> Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>		2023-10-04 18:15:06 -04:00
..
9pfs	fsdev: Use ThrottleDirection instread of bool is_write	2023-08-29 10:49:24 +02:00
acpi	hw/acpi/core: Trace enable and status registers of GPE separately	2023-10-04 18:15:05 -04:00
adc	meson: Replace softmmu_ss -> system_ss	2023-06-20 10:01:30 +02:00
alpha	hw/alpha: Use MachineClass->default_nic in the alpha machine	2023-05-26 09:10:49 +02:00
arm	sbsa-ref: add non-secure EL2 virtual timer	2023-09-21 16:07:14 +01:00
audio	hw/audio/lm4549: Add errp error reporting to init function	2023-09-22 16:30:07 +02:00
avr	Remove qemu-common.h include from most units	2022-04-06 14:31:55 +02:00
block	hw/other: spelling fixes	2023-09-21 11:31:16 +03:00
char	hw/other: spelling fixes	2023-09-21 11:31:16 +03:00
core	pci: SLT must be RO	2023-10-04 04:53:52 -04:00
cpu	hw/other: spelling fixes	2023-09-21 11:31:16 +03:00
cris	Do not include exec/address-spaces.h if it's not really necessary	2021-05-02 17:24:51 +02:00
cxl	hw/cxl: Support 4 HDM decoders at all levels of topology	2023-10-04 18:15:06 -04:00
display	hw/display/xlnx_dp.c: Add audiodev property	2023-09-22 16:30:07 +02:00
dma	hw/other: spelling fixes	2023-09-21 11:31:16 +03:00
gpio	hw/gpio/nrf51: implement DETECT signal	2023-08-22 17:30:59 +01:00
hppa	target/hppa: Report and clear BTLBs via fw_cfg at startup	2023-09-15 17:34:38 +02:00
hyperv	win32: replace closesocket() with close() wrapper	2023-03-13 15:39:31 +04:00
i2c	aspeed queue:	2023-09-06 11:14:55 -04:00
i386	hw/i386/pc: improve physical address space bound check for 32-bit x86 systems	2023-10-04 18:15:06 -04:00
ide	hw/ide/ahci: fix broken SError handling	2023-09-06 22:48:04 -04:00
input	* add host ticks function for RISC-V	2023-09-25 10:09:38 -04:00
intc	hw/other: spelling fixes	2023-09-21 11:31:16 +03:00
ipack	meson: Replace softmmu_ss -> system_ss	2023-06-20 10:01:30 +02:00
ipmi	hw/other: spelling fixes	2023-09-21 11:31:16 +03:00
isa	hw/acpi/acpi_dev_interface: Remove now unused madt_cpu virtual method	2023-10-04 18:15:05 -04:00
loongarch	hw/loongarch: Fix ACPI processor id off-by-one error	2023-08-24 16:58:16 +08:00
m68k	hw: Add compat machines for 8.2	2023-08-23 12:06:39 +02:00
mem	hw/cxl: Support 4 HDM decoders at all levels of topology	2023-10-04 18:15:06 -04:00
microblaze	trivial: Simplify the spots that use TARGET_BIG_ENDIAN as a numeric value	2023-09-08 13:08:52 +03:00
mips	hw/mips/jazz: Simplify the NIC setup code	2023-09-25 07:58:14 +02:00
misc	hw/other: spelling fixes	2023-09-21 11:31:16 +03:00
net	virtio-net: Expose MAX_VLAN	2023-10-04 04:54:09 -04:00
nios2	trivial: Simplify the spots that use TARGET_BIG_ENDIAN as a numeric value	2023-09-08 13:08:52 +03:00
nubus	trace-events: Fix the name of the tracing.rst file	2023-09-08 13:08:51 +03:00
nvme	trivial patches for 2023-09-21	2023-09-21 09:32:47 -04:00
nvram	hw/other: spelling fixes	2023-09-21 11:31:16 +03:00
openrisc	*: Add missing includes of qemu/error-report.h	2023-03-22 15:06:57 +00:00
pci	pcie_sriov: unregister_vfs(): fix error path	2023-10-04 18:15:06 -04:00
pci-bridge	hw/pci-bridge/cxl-upstream: Add serial number extended capability support	2023-10-04 18:15:06 -04:00
pci-host	hw/pci: spelling fixes	2023-09-20 07:54:34 +03:00
pcmcia	meson: Replace softmmu_ss -> system_ss	2023-06-20 10:01:30 +02:00
ppc	ppc: spelling fixes	2023-09-20 07:54:34 +03:00
rdma	meson: Replace softmmu_ss -> system_ss	2023-06-20 10:01:30 +02:00
remote	exec/memory: Add symbol for memory listener priority for device backend	2023-06-28 14:27:59 +02:00
riscv	hw/riscv/virt.c: fix non-KVM --enable-debug build	2023-09-11 11:45:55 +10:00
rtc	hw/other: spelling fixes	2023-09-21 11:31:16 +03:00
rx	hw/other: spelling fixes	2023-09-21 11:31:16 +03:00
s390x	s390x: do a subsystem reset before the unprotect on reboot	2023-09-12 11:13:33 +02:00
scsi	vhost-user: move VhostUserProtocolFeature definition to header file	2023-10-04 04:54:28 -04:00
sd	aspeed queue:	2023-09-06 11:14:55 -04:00
sensor	hw/i2c: spelling fixes	2023-08-31 19:47:43 +02:00
sh4	hw/other: spelling fixes	2023-09-21 11:31:16 +03:00
smbios	hw/other: spelling fixes	2023-09-21 11:31:16 +03:00
sparc	other architectures: spelling fixes	2023-07-25 17:14:07 +03:00
sparc64	hw/pci/pci: Remove multifunction parameter from pci_new_multifunction()	2023-07-10 18:59:32 -04:00
ssi	hw/other: spelling fixes	2023-09-21 11:31:16 +03:00
timer	hw/other: spelling fixes	2023-09-21 11:31:16 +03:00
tpm	hw/tpm: spelling fixes	2023-09-20 07:54:34 +03:00
tricore	hw/tricore: fix inclusion of tricore_testboard	2021-07-20 20:10:21 +02:00
ufs	hw/ufs: Support for UFS logical unit	2023-09-07 14:01:29 -04:00
usb	hw/usb/hcd-xhci: Avoid variable-length array in xhci_get_port_bandwidth()	2023-08-31 19:47:43 +02:00
vfio	spapr: Remove support for NVIDIA V100 GPU with NVLink2	2023-09-18 07:25:28 -03:00
virtio	virtio: use shadow_avail_idx while checking number of heads	2023-10-04 18:15:06 -04:00
watchdog	meson: Replace softmmu_ss -> system_ss	2023-06-20 10:01:30 +02:00
xen	xen: spelling fix	2023-09-08 13:08:52 +03:00
xenpv	hw/xenpv: Initialize Xen backend operations	2023-03-24 14:52:14 +00:00
xtensa	trivial: Simplify the spots that use TARGET_BIG_ENDIAN as a numeric value	2023-09-08 13:08:52 +03:00
Kconfig	hw/ufs: Initial commit for emulated Universal-Flash-Storage	2023-09-07 14:01:29 -04:00
meson.build	hw/ufs: Initial commit for emulated Universal-Flash-Storage	2023-09-07 14:01:29 -04:00