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17dd1354c1
qemu/hw
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Nicholas Piggin 17dd1354c1 target/ppc: Decrementer fix BookE semantics 
The decrementer store function has logic that short-cuts the timer if a
very small value is stored (0, 1, or 2) and raises an interrupt
directly. There are two problem with this on BookE.

First is that BookE says a decrementer interrupt should not be raised
on a store of 0, only of a decrement from 1. Second is that raising
the irq directly will bypass the auto-reload logic in the booke decr
timer function, breaking autoreload when 1 or 2 is stored.

Fix this by removing that small-value special case. It makes this
tricky logic even more difficult to reason about, and it hardly matters
for performance.

Cc: sdicaro@DDCI.com
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Reviewed-by: Daniel Henrique Barboza <danielhb413@gmail.com>
Message-Id: <20230530131214.373524-2-npiggin@gmail.com>
Signed-off-by: Daniel Henrique Barboza <danielhb413@gmail.com>
2023-06-10 10:19:24 -03:00
..
9pfs 9pfs: prevent opening special files (CVE-2023-2861) 2023-06-08 17:04:58 +02:00
acpi hw/pci-bridge: Make PCIe and CXL PXB Devices inherit from TYPE_PXB_DEV 2023-04-24 22:56:55 -04:00
adc hw/adc: Make adci[*] R/W in NPCM7XX ADC 2022-07-18 13:20:14 +01:00
alpha hw/alpha: Use MachineClass->default_nic in the alpha machine 2023-05-26 09:10:49 +02:00
arm target-arm queue: 2023-06-06 12:11:34 -07:00
audio hw/audio/via-ac97: Basic implementation of audio playback 2023-03-08 00:37:48 +01:00
avr Remove qemu-common.h include from most units 2022-04-06 14:31:55 +02:00
block block: add blk_io_plug_call() API 2023-06-01 07:34:03 -04:00
char hw/arm/omap: Remove unused omap_uart_attach() 2023-06-05 07:43:23 +01:00
core numa: Check for qemu_strtosz_MiB error 2023-06-02 12:29:27 -05:00
cpu hw/cpu: Mark arm11 and realview mpcore as target-independent code 2023-01-16 17:51:20 +01:00
cris
cxl hw/cxl: Introduce cxl_device_get_timestamp() utility function 2023-05-19 10:30:46 -04:00
display bulk: Remove pointless QOM casts 2023-06-05 20:48:34 +02:00
dma hw/dma/xilinx_axidma: Check DMASR.HALTED to prevent infinite loop. 2023-05-30 15:50:16 +01:00
gpio replace TABs with spaces 2023-03-20 12:43:50 +01:00
hppa hw/hppa: Use MachineClass->default_nic in the hppa machine 2023-05-26 09:10:49 +02:00
hyperv win32: replace closesocket() with close() wrapper 2023-03-13 15:39:31 +04:00
i2c hw/i2c/allwinner-i2c: Fix subclassing of TYPE_AW_I2C_SUN6I 2023-04-11 14:13:29 +01:00
i386 hw/isa/piix3: Resolve redundant TYPE_PIIX3_XEN_DEVICE 2023-06-07 15:07:10 +01:00
ide hw: replace most qemu_bh_new calls with qemu_bh_new_guarded 2023-04-28 11:31:54 +02:00
input virtio-input: add a virtio-mulitouch device 2023-05-28 13:08:25 +04:00
intc pnv/xive2: Quiet down some error messages 2023-06-10 10:19:24 -03:00
ipack include/hw/pci: Split pci_device.h off pci.h 2023-01-08 01:54:22 -05:00
ipmi include/hw/pci: Split pci_device.h off pci.h 2023-01-08 01:54:22 -05:00
isa hw/isa/piix3: Resolve redundant TYPE_PIIX3_XEN_DEVICE 2023-06-07 15:07:10 +01:00
loongarch hw/loongarch64: Use MachineClass->default_nic in the virt machine 2023-05-26 09:10:49 +02:00
m68k bulk: Remove pointless QOM casts 2023-06-05 20:48:34 +02:00
mem hw/cxl: Multi-Region CXL Type-3 Devices (Volatile and Persistent) 2023-05-19 01:36:09 -04:00
microblaze hw/char/xilinx_uartlite: Open-code xilinx_uartlite_create() 2023-02-27 13:27:05 +00:00
mips hw/mips/malta: Fix the malta machine on big endian hosts 2023-06-05 20:48:34 +02:00
misc hw: arm: allwinner-sramc: Add SRAM Controller support for R40 2023-06-06 10:19:33 +01:00
net hw/net/can: Introduce Xilinx Versal CANFD controller 2023-06-06 10:19:30 +01:00
nios2 hw/nios2: set machine->fdt in nios2_load_dtb() 2022-10-17 16:15:10 -03:00
nubus hw/nubus/nubus-device: Fix memory leak in nubus_device_realize 2023-02-27 22:29:01 +01:00
nvme hw: replace most qemu_bh_new calls with qemu_bh_new_guarded 2023-04-28 11:31:54 +02:00
nvram aspeed queue: 2023-03-03 17:11:22 +00:00
openrisc *: Add missing includes of qemu/error-report.h 2023-03-22 15:06:57 +00:00
pci hw/pci/pci.c: Don't leak PCIBus::irq_count[] in pci_bus_irqs() 2023-06-07 15:07:10 +01:00
pci-bridge hw/pci-bridge: make building pcie-to-pci bridge configurable 2023-05-19 10:30:46 -04:00
pci-host bulk: Remove pointless QOM casts 2023-06-05 20:48:34 +02:00
pcmcia
ppc target/ppc: Decrementer fix BookE semantics 2023-06-10 10:19:24 -03:00
rdma hw/rdma: VMW_PVRDMA should depend on VMXNET3_PCI 2023-04-28 08:05:37 +02:00
remote vfio-user: update comments 2023-06-07 10:21:16 -04:00
riscv bulk: Remove pointless QOM casts 2023-06-05 20:48:34 +02:00
rtc replace TABs with spaces 2023-03-20 12:43:50 +01:00
rx bulk: Remove pointless QOM casts 2023-06-05 20:48:34 +02:00
s390x hw/s390x: Use MachineClass->default_nic in the s390x machine 2023-05-22 09:44:48 +02:00
scsi bulk: Remove pointless QOM casts 2023-06-05 20:48:34 +02:00
sd hw: sd: allwinner-sdhost: Add sun50i-a64 SoC support 2023-06-06 10:19:33 +01:00
sensor Do not include hw/hw.h if it is not necessary 2023-02-27 09:15:38 +01:00
sh4 hw/sh4: Use MachineClass->default_nic in the sh4 r2d machine 2023-05-22 09:44:48 +02:00
smbios hw/smbios: fix field corruption in type 4 table 2023-03-02 03:10:46 -05:00
sparc bulk: Remove pointless QOM casts 2023-06-05 20:48:34 +02:00
sparc64 hw/sparc64/sun4u: Use MachineClass->default_nic and MachineClass->no_parallel 2023-05-22 09:44:48 +02:00
ssi hw/ssi: Fix Linux driver init issue with xilinx_spi 2023-04-03 16:12:30 +01:00
timer hw/timer/i8254_common: Share "iobase" property via base class 2023-06-05 07:43:23 +01:00
tpm tpm: Add support for TPM device over I2C bus 2023-04-20 08:17:15 -04:00
tricore
usb usb/ohci: Set pad to 0 after frame update 2023-05-25 10:18:33 +02:00
vfio vfio/pci: Fix a use-after-free issue 2023-05-24 09:21:22 +02:00
virtio bulk: Remove pointless QOM casts 2023-06-05 20:48:34 +02:00
watchdog hw/watchdog: Allwinner WDT emulation for system reset 2023-04-20 10:21:13 +01:00
xen xen-block: fix segv on unrealize 2023-06-07 15:07:10 +01:00
xenpv hw/xenpv: Initialize Xen backend operations 2023-03-24 14:52:14 +00:00
xtensa hw/xtensa: Use MachineClass->default_nic in the virt machine 2023-05-26 09:10:49 +02:00
Kconfig xen: add CONFIG_XEN_BUS and CONFIG_XEN_EMU options for Xen emulation 2023-03-01 08:22:49 +00:00
meson.build hw/loongarch: Add support loongson3 virt machine type. 2022-06-06 18:09:03 +00:00