diff options
Diffstat (limited to 'qemu-options.hx')
| -rw-r--r-- | qemu-options.hx | 30 |
1 files changed, 19 insertions, 11 deletions
diff --git a/qemu-options.hx b/qemu-options.hx index b2cb1debe6..64442b62ee 100644 --- a/qemu-options.hx +++ b/qemu-options.hx @@ -32,12 +32,9 @@ DEF("machine", HAS_ARG, QEMU_OPTION_machine, \ " selects emulated machine ('-machine help' for list)\n" " property accel=accel1[:accel2[:...]] selects accelerator\n" " supported accelerators are kvm, xen, hax, hvf, whpx or tcg (default: tcg)\n" - " kernel_irqchip=on|off|split controls accelerated irqchip support (default=off)\n" " vmport=on|off|auto controls emulation of vmport (default: auto)\n" - " kvm_shadow_mem=size of KVM shadow MMU in bytes\n" " dump-guest-core=on|off include guest memory in a core dump (default=on)\n" " mem-merge=on|off controls memory merge support (default: on)\n" - " igd-passthru=on|off controls IGD GFX passthrough support (default=off)\n" " aes-key-wrap=on|off controls support for AES key wrapping (default=on)\n" " dea-key-wrap=on|off controls support for DEA key wrapping (default=on)\n" " suppress-vmdesc=on|off disables self-describing migration (default=off)\n" @@ -69,16 +66,10 @@ This is used to enable an accelerator. Depending on the target architecture, kvm, xen, hax, hvf, whpx or tcg can be available. By default, tcg is used. If there is more than one accelerator specified, the next one is used if the previous one fails to initialize. -@item kernel_irqchip=on|off -Controls in-kernel irqchip support for the chosen accelerator when available. -@item gfx_passthru=on|off -Enables IGD GFX passthrough support for the chosen machine when available. @item vmport=on|off|auto Enables emulation of VMWare IO port, for vmmouse etc. auto says to select the value based on accel. For accel=xen the default is off otherwise the default is on. -@item kvm_shadow_mem=size -Defines the size of the KVM shadow MMU. @item dump-guest-core=on|off Include guest memory in a core dump. The default is on. @item mem-merge=on|off @@ -118,8 +109,12 @@ Select CPU model (@code{-cpu help} for list and additional feature selection) ETEXI DEF("accel", HAS_ARG, QEMU_OPTION_accel, - "-accel [accel=]accelerator[,thread=single|multi]\n" + "-accel [accel=]accelerator[,prop[=value][,...]]\n" " select accelerator (kvm, xen, hax, hvf, whpx or tcg; use 'help' for a list)\n" + " igd-passthru=on|off (enable Xen integrated Intel graphics passthrough, default=off)\n" + " kernel-irqchip=on|off|split controls accelerated irqchip support (default=on)\n" + " kvm-shadow-mem=size of KVM shadow MMU in bytes\n" + " tb-size=n (TCG translation block cache size)\n" " thread=single|multi (enable multi-threaded TCG)\n", QEMU_ARCH_ALL) STEXI @item -accel @var{name}[,prop=@var{value}[,...]] @@ -129,6 +124,18 @@ kvm, xen, hax, hvf, whpx or tcg can be available. By default, tcg is used. If th more than one accelerator specified, the next one is used if the previous one fails to initialize. @table @option +@item igd-passthru=on|off +When Xen is in use, this option controls whether Intel integrated graphics +devices can be passed through to the guest (default=off) +@item kernel-irqchip=on|off|split +Controls KVM in-kernel irqchip support. The default is full acceleration of the +interrupt controllers. On x86, split irqchip reduces the kernel attack +surface, at a performance cost for non-MSI interrupts. Disabling the in-kernel +irqchip completely is not recommended except for debugging purposes. +@item kvm-shadow-mem=size +Defines the size of the KVM shadow MMU. +@item tb-size=@var{n} +Controls the size (in MiB) of the TCG translation block cache. @item thread=single|multi Controls number of TCG threads. When the TCG is multi-threaded there will be one thread per vCPU therefor taking advantage of additional host cores. The default @@ -3923,7 +3930,8 @@ DEF("tb-size", HAS_ARG, QEMU_OPTION_tb_size, \ STEXI @item -tb-size @var{n} @findex -tb-size -Set TB size. +Set TCG translation block cache size. Deprecated, use @samp{-accel tcg,tb-size=@var{n}} +instead. ETEXI DEF("incoming", HAS_ARG, QEMU_OPTION_incoming, \ |