From 2c933ac6a883606b85f8cf271bfb40379d077e97 Mon Sep 17 00:00:00 2001 From: Paolo Bonzini Date: Mon, 1 Mar 2021 12:14:14 +0100 Subject: KVM: x86: deprecate -M kernel-irqchip=off except for -M isapc The userspace local APIC is basically untested and does not support many features such as TSC deadline timer, x2APIC or PV spinlocks. On the other hand, the PIT and IOAPIC are okay as they are not tied to the processor and are tested with -M kernel-irqchip=split. Therefore, deprecate the local APIC and, with it, limit -M kernel-irqchip=off to the ISA PC machine type, which does not have a local APIC at all. Reviewed-by: Maxim Levitsky Signed-off-by: Paolo Bonzini --- docs/system/deprecated.rst | 7 +++++++ 1 file changed, 7 insertions(+) (limited to 'docs/system') diff --git a/docs/system/deprecated.rst b/docs/system/deprecated.rst index 561c916da2..fcf0ca4068 100644 --- a/docs/system/deprecated.rst +++ b/docs/system/deprecated.rst @@ -153,6 +153,13 @@ The ``-writeconfig`` option is not able to serialize the entire contents of the QEMU command line. It is thus considered a failed experiment and deprecated, with no current replacement. +Userspace local APIC with KVM (x86, since 6.0) +'''''''''''''''''''''''''''''''''''''''''''''' + +Using ``-M kernel-irqchip=off`` with x86 machine types that include a local +APIC is deprecated. The ``split`` setting is supported, as is using +``-M kernel-irqchip=off`` with the ISA PC machine type. + QEMU Machine Protocol (QMP) commands ------------------------------------ -- cgit v1.2.3-55-g7522 From fe636424caabb4e8b5b96d8a994f58e321bd71d9 Mon Sep 17 00:00:00 2001 From: Paolo Bonzini Date: Thu, 25 Feb 2021 11:51:30 +0100 Subject: qemu-option: do not suggest using the delay option The "delay" option was a hack that was introduced to allow writing "nodelay". We are adding a "nodelay" option to be used as "nodelay=on", so recommend it instead of "delay". This is quite ugly, but a proper deprecation of "delay" cannot be done if QEMU starts suggesting it. Since it's the only case I opted for this very much ad-hoc patch. Reviewed-by: Daniel P. Berrangé Signed-off-by: Paolo Bonzini --- docs/system/deprecated.rst | 6 ++++++ util/qemu-option.c | 6 +++++- 2 files changed, 11 insertions(+), 1 deletion(-) (limited to 'docs/system') diff --git a/docs/system/deprecated.rst b/docs/system/deprecated.rst index fcf0ca4068..cfabe69846 100644 --- a/docs/system/deprecated.rst +++ b/docs/system/deprecated.rst @@ -134,6 +134,12 @@ Boolean options such as ``share=on``/``share=off`` could be written in short form as ``share`` and ``noshare``. This is now deprecated and will cause a warning. +``delay`` option for socket character devices (since 6.0) +''''''''''''''''''''''''''''''''''''''''''''''''''''''''' + +The replacement for the ``nodelay`` short-form boolean option is ``nodelay=on`` +rather than ``delay=off``. + ``--enable-fips`` (since 6.0) ''''''''''''''''''''''''''''' diff --git a/util/qemu-option.c b/util/qemu-option.c index 40564a12eb..9678d5b682 100644 --- a/util/qemu-option.c +++ b/util/qemu-option.c @@ -785,7 +785,11 @@ static const char *get_opt_name_value(const char *params, } if (!is_help && warn_on_flag) { warn_report("short-form boolean option '%s%s' deprecated", prefix, *name); - error_printf("Please use %s=%s instead\n", *name, *value); + if (g_str_equal(*name, "delay")) { + error_printf("Please use nodelay=%s instead\n", prefix[0] ? "on" : "off"); + } else { + error_printf("Please use %s=%s instead\n", *name, *value); + } } } } else { -- cgit v1.2.3-55-g7522