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5255fcf8e4
qemu/hw
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Peter Maydell 5255fcf8e4 nvic: Add cached vectpending_prio state 
Instead of looking up the pending priority
in nvic_pending_prio(), cache it in a new state struct
field. The calculation of the pending priority given
the interrupt number is more complicated in v8M with
the security extension, so the caching will be worthwhile.

This changes nvic_pending_prio() from returning a full
(group + subpriority) priority value to returning a group
priority. This doesn't require changes to its callsites
because we use it only in comparisons of the form
  execution_prio > nvic_pending_prio()
and execution priority is always a group priority, so
a test (exec prio > full prio) is true if and only if
(execprio > group_prio).

(Architecturally the expected comparison is with the
group priority for this sort of "would we preempt" test;
we were only doing a test with a full priority as an
optimisation to avoid the mask, which is possible
precisely because the two comparisons always give the
same answer.)

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 1505240046-11454-5-git-send-email-peter.maydell@linaro.org
2017-09-21 16:29:27 +01:00
..
9pfs 9pfs: check the size of transport buffer before marshaling 2017-09-20 08:48:52 +02:00
acpi Convert multi-line fprintf() to warn_report() 2017-09-19 14:09:34 +02:00
adc STM32F2xx: Add the ADC device 2016-10-04 13:28:07 +01:00
alpha cpu: make cpu_generic_init() abort QEMU on error 2017-09-19 09:09:32 -03:00
arm Machine/CPU/NUMA queue, 2017-09-19 2017-09-20 17:35:36 +01:00
audio audio: intel-hda: do not use old_mmio accesses 2017-09-18 13:13:32 +02:00
block xen-disk: use g_new0 to fix build 2017-09-20 19:05:26 -07:00
bt bt: stop the sdp memory allocation craziness 2017-08-01 17:27:33 +02:00
char qapi: Mechanically convert FOO_lookup[...] to FOO_str(...) 2017-09-04 13:09:13 +02:00
core numa: cpu: calculate/set default node-ids after all -numa CLI options are parsed 2017-09-19 16:51:33 -03:00
cpu cpu: don't allow negative core id 2017-08-02 18:30:13 -03:00
cris cris: replace cpu_cris_init() with cpu_generic_init() 2017-09-01 11:54:24 -03:00
display virtio-gpu: Handle endian conversion 2017-09-19 18:31:32 +02:00
dma xilinx_axidma: Convert to DEFINE_PROP_LINK 2017-09-07 13:54:51 +01:00
gpio qdev: Replace cannot_instantiate_with_device_add_yet with !user_creatable 2017-05-17 10:37:00 -03:00
i2c ppc4xx_i2c: Move to hw/i2c 2017-09-08 09:30:55 +10:00
i386 Machine/CPU/NUMA queue, 2017-09-19 2017-09-20 17:35:36 +01:00
ide hw/ide: Convert DeviceClass init to realize 2017-09-18 19:43:38 -04:00
input qapi: Mechanically convert FOO_lookup[...] to FOO_str(...) 2017-09-04 13:09:13 +02:00
intc nvic: Add cached vectpending_prio state 2017-09-21 16:29:27 +01:00
ipack ipack: Update e-mail address 2016-05-18 15:04:27 +03:00
ipmi qom: enforce readonly nature of link's check callback 2017-07-14 12:04:42 +02:00
isa trace-events: fix code style: print 0x before hex numbers 2017-08-01 12:13:07 +01:00
lm32 cpu: make cpu_generic_init() abort QEMU on error 2017-09-19 09:09:32 -03:00
m68k cpu: make cpu_generic_init() abort QEMU on error 2017-09-19 09:09:32 -03:00
mem qmp: introduce query-memory-size-summary command 2017-09-14 15:52:10 +01:00
microblaze hw: Use new memory_region_init_{ram, rom, rom_device}() functions 2017-07-14 17:59:42 +01:00
mips mips: replace cpu_mips_init() with cpu_generic_init() 2017-09-21 13:25:37 +01:00
misc hw/misc/ivshmem: Fix ivshmem_recv_msg() to also work on big endian systems 2017-09-19 18:21:33 +02:00
moxie cpu: make cpu_generic_init() abort QEMU on error 2017-09-19 09:09:32 -03:00
net net: add Sun HME (Happy Meal Ethernet) on-board NIC 2017-09-21 08:38:42 +01:00
nios2 nios2: replace cpu_nios2_init() with cpu_generic_init() 2017-09-01 11:54:24 -03:00
nvram pc, pci, virtio: patches queued before 2.10 2017-09-08 16:04:42 +01:00
openrisc cpu: make cpu_generic_init() abort QEMU on error 2017-09-19 09:09:32 -03:00
pci net: Add SunGEM device emulation as found on Apple UniNorth 2017-09-15 10:29:48 +10:00
pci-bridge hw/pci: add QEMU-specific PCI capability to the Generic PCI Express Root Port 2017-09-08 16:15:17 +03:00
pci-host hw/pci-host/gpex: Implement PCI INTx routing 2017-09-14 18:43:19 +01:00
pcmcia
ppc numa: cpu: calculate/set default node-ids after all -numa CLI options are parsed 2017-09-19 16:51:33 -03:00
s390x virtio-ccw: Create a virtio gpu device for the ccw bus 2017-09-19 18:31:32 +02:00
scsi osdep.h: Prohibit disabling assert() in supported builds 2017-09-19 16:20:49 +02:00
sd trace-events: fix code style: print 0x before hex numbers 2017-08-01 12:13:07 +01:00
sh4 cpu: make cpu_generic_init() abort QEMU on error 2017-09-19 09:09:32 -03:00
smbios stubs: move smbios stubs to hw/smbios 2017-01-16 17:52:35 +01:00
sparc cpu: make cpu_generic_init() abort QEMU on error 2017-09-19 09:09:32 -03:00
sparc64 sun4u: use sunhme as default on-board NIC 2017-09-21 08:38:42 +01:00
ssi xlnx-qspi: add a property for mmio-execution 2017-08-14 14:17:18 +01:00
timer i8254: use QEMU_ALIGN_DOWN 2017-08-31 12:29:07 +02:00
tpm clean-up: removed duplicate #includes 2016-10-28 18:17:24 +03:00
tricore cpu: make cpu_generic_init() abort QEMU on error 2017-09-19 09:09:32 -03:00
unicore32 cpu: make cpu_generic_init() abort QEMU on error 2017-09-19 09:09:32 -03:00
usb Convert single line fprintf(.../n) to warn_report() 2017-09-19 14:09:34 +02:00
vfio vfio, spapr: Fix levels calculation 2017-09-15 10:29:48 +10:00
virtio osdep.h: Prohibit disabling assert() in supported builds 2017-09-19 16:20:49 +02:00
watchdog watchdog: wdt_aspeed: Add support for the reset width register 2017-09-04 15:21:54 +01:00
xen xen/pt: allow QEMU to request MSI unmasking at bind time 2017-09-20 19:05:27 -07:00
xenpv xenfb: remove xen_init_display "temporary" hack 2017-07-07 11:10:03 -07:00
xtensa cpu: make cpu_generic_init() abort QEMU on error 2017-09-19 09:09:32 -03:00
Makefile.objs 9pfs: fix dependencies 2017-08-30 18:23:25 +02:00