diff options
Diffstat (limited to 'app-emulation/qemu/files/qemu-4.0.0-pc-q35-4.0.patch')
| -rw-r--r-- | app-emulation/qemu/files/qemu-4.0.0-pc-q35-4.0.patch | 135 |
1 files changed, 0 insertions, 135 deletions
diff --git a/app-emulation/qemu/files/qemu-4.0.0-pc-q35-4.0.patch b/app-emulation/qemu/files/qemu-4.0.0-pc-q35-4.0.patch deleted file mode 100644 index ebabc0c4c294..000000000000 --- a/app-emulation/qemu/files/qemu-4.0.0-pc-q35-4.0.patch +++ /dev/null @@ -1,135 +0,0 @@ -Backport of QEMU v4.1 commit for stable v4.0.1 release - -commit c87759ce876a7a0b17c2bf4f0b964bd51f0ee871 -Author: Alex Williamson <address@hidden> -Date: Tue May 14 14:14:41 2019 -0600 - - q35: Revert to kernel irqchip - - Commit b2fc91db8447 ("q35: set split kernel irqchip as default") changed - the default for the pc-q35-4.0 machine type to use split irqchip, which - turned out to have disasterous effects on vfio-pci INTx support. KVM - resampling irqfds are registered for handling these interrupts, but - these are non-functional in split irqchip mode. We can't simply test - for split irqchip in QEMU as userspace handling of this interrupt is a - significant performance regression versus KVM handling (GeForce GPUs - assigned to Windows VMs are non-functional without forcing MSI mode or - re-enabling kernel irqchip). - - The resolution is to revert the change in default irqchip mode in the - pc-q35-4.1 machine and create a pc-q35-4.0.1 machine for the 4.0-stable - branch. The qemu-q35-4.0 machine type should not be used in vfio-pci - configurations for devices requiring legacy INTx support without - explicitly modifying the VM configuration to use kernel irqchip. - -Link: https://bugs.launchpad.net/qemu/+bug/1826422 -Fixes: b2fc91db8447 ("q35: set split kernel irqchip as default") -Cc: address@hidden -Reviewed-by: Peter Xu <address@hidden> -Signed-off-by: Alex Williamson <address@hidden> ---- - -Same code as v1, just updating the commit log as a formal backport of -the merged 4.1 commit. - - hw/core/machine.c | 3 +++ - hw/i386/pc.c | 3 +++ - hw/i386/pc_q35.c | 16 ++++++++++++++-- - include/hw/boards.h | 3 +++ - include/hw/i386/pc.h | 3 +++ - 5 files changed, 26 insertions(+), 2 deletions(-) - -diff --git a/hw/core/machine.c b/hw/core/machine.c -index 743fef28982c..5d046a43e3d2 100644 ---- a/hw/core/machine.c -+++ b/hw/core/machine.c -@@ -24,6 +24,9 @@ - #include "hw/pci/pci.h" - #include "hw/mem/nvdimm.h" - -+GlobalProperty hw_compat_4_0[] = {}; -+const size_t hw_compat_4_0_len = G_N_ELEMENTS(hw_compat_4_0); -+ - GlobalProperty hw_compat_3_1[] = { - { "pcie-root-port", "x-speed", "2_5" }, - { "pcie-root-port", "x-width", "1" }, -diff --git a/hw/i386/pc.c b/hw/i386/pc.c -index f2c15bf1f2c3..d98b737b8f3b 100644 ---- a/hw/i386/pc.c -+++ b/hw/i386/pc.c -@@ -115,6 +115,9 @@ struct hpet_fw_config hpet_cfg = {.count = UINT8_MAX}; - /* Physical Address of PVH entry point read from kernel ELF NOTE */ - static size_t pvh_start_addr; - -+GlobalProperty pc_compat_4_0[] = {}; -+const size_t pc_compat_4_0_len = G_N_ELEMENTS(pc_compat_4_0); -+ - GlobalProperty pc_compat_3_1[] = { - { "intel-iommu", "dma-drain", "off" }, - { "Opteron_G3" "-" TYPE_X86_CPU, "rdtscp", "off" }, -diff --git a/hw/i386/pc_q35.c b/hw/i386/pc_q35.c -index 372c6b73bebd..45cc29d1adb7 100644 ---- a/hw/i386/pc_q35.c -+++ b/hw/i386/pc_q35.c -@@ -357,7 +357,7 @@ static void pc_q35_machine_options(MachineClass *m) - m->units_per_default_bus = 1; - m->default_machine_opts = "firmware=bios-256k.bin"; - m->default_display = "std"; -- m->default_kernel_irqchip_split = true; -+ m->default_kernel_irqchip_split = false; - m->no_floppy = 1; - machine_class_allow_dynamic_sysbus_dev(m, TYPE_AMD_IOMMU_DEVICE); - machine_class_allow_dynamic_sysbus_dev(m, TYPE_INTEL_IOMMU_DEVICE); -@@ -365,12 +365,24 @@ static void pc_q35_machine_options(MachineClass *m) - m->max_cpus = 288; - } - --static void pc_q35_4_0_machine_options(MachineClass *m) -+static void pc_q35_4_0_1_machine_options(MachineClass *m) - { - pc_q35_machine_options(m); - m->alias = "q35"; - } - -+DEFINE_Q35_MACHINE(v4_0_1, "pc-q35-4.0.1", NULL, -+ pc_q35_4_0_1_machine_options); -+ -+static void pc_q35_4_0_machine_options(MachineClass *m) -+{ -+ pc_q35_4_0_1_machine_options(m); -+ m->default_kernel_irqchip_split = true; -+ m->alias = NULL; -+ compat_props_add(m->compat_props, hw_compat_4_0, hw_compat_4_0_len); -+ compat_props_add(m->compat_props, pc_compat_4_0, pc_compat_4_0_len); -+} -+ - DEFINE_Q35_MACHINE(v4_0, "pc-q35-4.0", NULL, - pc_q35_4_0_machine_options); - -diff --git a/include/hw/boards.h b/include/hw/boards.h -index e231860666a1..fe1885cbffa0 100644 ---- a/include/hw/boards.h -+++ b/include/hw/boards.h -@@ -293,6 +293,9 @@ struct MachineState { - } \ - type_init(machine_initfn##_register_types) - -+extern GlobalProperty hw_compat_4_0[]; -+extern const size_t hw_compat_4_0_len; -+ - extern GlobalProperty hw_compat_3_1[]; - extern const size_t hw_compat_3_1_len; - -diff --git a/include/hw/i386/pc.h b/include/hw/i386/pc.h -index ca65ef18afb4..43df7230a22b 100644 ---- a/include/hw/i386/pc.h -+++ b/include/hw/i386/pc.h -@@ -293,6 +293,9 @@ int e820_add_entry(uint64_t, uint64_t, uint32_t); - int e820_get_num_entries(void); - bool e820_get_entry(int, uint32_t, uint64_t *, uint64_t *); - -+extern GlobalProperty pc_compat_4_0[]; -+extern const size_t pc_compat_4_0_len; -+ - extern GlobalProperty pc_compat_3_1[]; - extern const size_t pc_compat_3_1_len; |