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qemu/include/sysemu
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Paolo Bonzini 24b36e9813 block: add max_hw_transfer to BlockLimits 
For block host devices, I/O can happen through either the kernel file
descriptor I/O system calls (preadv/pwritev, io_submit, io_uring)
or the SCSI passthrough ioctl SG_IO.

In the latter case, the size of each transfer can be limited by the
HBA, while for file descriptor I/O the kernel is able to split and
merge I/O in smaller pieces as needed.  Applying the HBA limits to
file descriptor I/O results in more system calls and suboptimal
performance, so this patch splits the max_transfer limit in two:
max_transfer remains valid and is used in general, while max_hw_transfer
is limited to the maximum hardware size.  max_hw_transfer can then be
included by the scsi-generic driver in the block limits page, to ensure
that the stricter hardware limit is used.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2021-06-25 10:54:13 +02:00
..
accel-ops.h accel: replace struct CpusAccel with AccelOpsClass 2021-02-05 10:24:15 -10:00
arch_init.h Drop the deprecated unicore32 target 2021-05-12 18:20:52 +02:00
balloon.h qapi: Restrict balloon-related commands to machine code 2020-09-29 15:41:35 +02:00
block-backend.h block: add max_hw_transfer to BlockLimits 2021-06-25 10:54:13 +02:00
blockdev.h blockdev: Drop deprecated bogus -drive interface type 2021-03-19 15:18:43 +01:00
cpu-throttle.h
cpu-timers.h cpus: prepare new CpusAccel cpu accelerator interface 2020-10-05 16:41:22 +02:00
cpus.h sev/i386: Don't allow a system reset under an SEV-ES guest 2021-02-16 17:15:39 +01:00
cryptodev-vhost-user.h cryptodev: Fix Lesser GPL version number 2020-10-27 16:48:49 +01:00
cryptodev-vhost.h cryptodev: Fix Lesser GPL version number 2020-10-27 16:48:49 +01:00
cryptodev.h cryptodev: Fix Lesser GPL version number 2020-10-27 16:48:49 +01:00
device_tree.h device_tree: add qemu_fdt_setprop_string_array helper 2021-03-10 15:34:11 +00:00
dma.h dma: Introduce dma_aligned_pow2_mask() 2021-03-12 12:40:10 +00:00
dump-arch.h
dump.h
hax.h include/sysemu: Poison all accelerator CONFIG switches in common code 2021-05-14 12:31:44 +02:00
hostmem.h hostmem: Wire up RAM_NORESERVE via "reserve" property 2021-06-15 20:27:38 +02:00
hvf_int.h hvf: Introduce hvf vcpu struct 2021-06-03 16:43:27 +01:00
hvf.h include/sysemu: Poison all accelerator CONFIG switches in common code 2021-05-14 12:31:44 +02:00
hw_accel.h Add NVMM accelerator: acceleration enlightenments 2021-05-04 14:15:34 +02:00
iothread.h multi-process: define MPQemuMsg format and transmission functions 2021-02-10 09:23:28 +00:00
kvm_int.h KVM: Cache kvm slot dirty bitmap size 2021-05-26 14:49:45 +02:00
kvm.h exec: Get rid of phys_mem_set_alloc() 2021-03-15 11:01:23 +01:00
memory_mapping.h
numa.h numa: drop support for '-numa node' (without memory specified) 2020-09-30 19:09:20 +02:00
nvmm.h Add NVMM accelerator: acceleration enlightenments 2021-05-04 14:15:34 +02:00
os-posix.h osdep: Make os-win32.h and os-posix.h handle 'extern "C"' themselves 2021-05-10 17:21:54 +01:00
os-win32.h osdep: Make os-win32.h and os-posix.h handle 'extern "C"' themselves 2021-05-10 17:21:54 +01:00
qtest.h cpu-timers, icount: new modules 2020-10-05 16:41:22 +02:00
replay.h replay: fix icount request when replaying clock access 2021-02-16 17:15:39 +01:00
reset.h
rng-random.h Use OBJECT_DECLARE_SIMPLE_TYPE when possible 2020-09-18 14:12:32 -04:00
rng.h qom: Remove module_obj_name parameter from OBJECT_DECLARE* macros 2020-09-18 14:12:32 -04:00
runstate-action.h vl: Add option to avoid stopping VM upon guest panic 2020-12-15 12:51:58 -05:00
runstate.h sysemu: Let VMChangeStateHandler take boolean 'running' argument 2021-03-09 23:13:57 +01:00
seccomp.h
sev.h sev/i386: Allow AP booting under SEV-ES 2021-02-16 17:15:39 +01:00
sysemu.h qmp: generalize watchdog-set-action to -no-reboot/-no-shutdown 2020-12-15 12:51:57 -05:00
tcg.h accel/tcg: Merge tcg_exec_init into tcg_init_machine 2021-06-11 09:26:28 -07:00
tpm_backend.h sysemu: Make TPM structures inaccessible if CONFIG_TPM is not defined 2021-06-15 10:55:12 -04:00
tpm_util.h tpm: Fix Lesser GPL version number 2020-11-15 16:44:18 +01:00
tpm.h sysemu: Make TPM structures inaccessible if CONFIG_TPM is not defined 2021-06-15 10:55:12 -04:00
vhost-user-backend.h qom: Remove module_obj_name parameter from OBJECT_DECLARE* macros 2020-09-18 14:12:32 -04:00
watchdog.h
whpx.h include/sysemu: Poison all accelerator CONFIG switches in common code 2021-05-14 12:31:44 +02:00
xen-mapcache.h
xen.h sysemu/xen: Add missing 'exec/cpu-common.h' header for ram_addr_t type 2020-09-30 19:11:36 +02:00