qemu/target
Daniel Henrique Barboza 1474ba6d10 target/ppc: enable PMU counter overflow with cycle events
The PowerISA v3.1 defines that if the proper bits are set (MMCR0_PMC1CE
for PMC1 and MMCR0_PMCjCE for the remaining PMCs), counter negative
conditions are enabled. This means that if the counter value overflows
(i.e. exceeds 0x80000000) a performance monitor alert will occur. This alert
can trigger an event-based exception (to be implemented in the next patches)
if the MMCR0_EBE bit is set.

For now, overflowing the counter when the PMC is counting cycles will
just trigger a performance monitor alert. This is done by starting the
overflow timer to expire in the moment the overflow would be occuring. The
timer will call fire_PMC_interrupt() (via cpu_ppc_pmu_timer_cb) which will
trigger the PMU alert and, if the conditions are met, an EBB exception.

Reviewed-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Daniel Henrique Barboza <danielhb413@gmail.com>
Message-Id: <20211201151734.654994-6-danielhb413@gmail.com>
Signed-off-by: Cédric Le Goater <clg@kaod.org>
2021-12-17 17:57:18 +01:00
..
alpha target/alpha: Implement alpha_cpu_record_sigbus 2021-11-02 07:00:52 -04:00
arm Revert "arm: tcg: Adhere to SMCCC 1.3 section 5.2" 2021-11-22 13:41:48 +00:00
avr target/avr: Drop checks for singlestep_enabled 2021-10-15 16:39:14 -07:00
cris target/cris: Make cris_cpu_tlb_fill sysemu only 2021-11-02 07:00:52 -04:00
hexagon This series adds support for the Hexagon Vector eXtensions (HVX) 2021-11-04 06:34:36 -04:00
hppa target/hppa: Make hppa_cpu_tlb_fill sysemu only 2021-11-02 07:00:52 -04:00
i386 Bugfixes for 6.2. 2021-11-19 17:16:57 +01:00
m68k target/m68k: Make m68k_cpu_tlb_fill sysemu only 2021-11-02 07:00:52 -04:00
microblaze target/microblaze: Do not set MO_ALIGN for user-only 2021-11-02 07:00:52 -04:00
mips MIPS patches queue 2021-11-02 15:12:11 -04:00
nios2 target/nios2: Implement nios2_cpu_record_sigsegv 2021-11-02 07:00:52 -04:00
openrisc target/openrisc: Make openrisc_cpu_tlb_fill sysemu only 2021-11-02 07:00:52 -04:00
ppc target/ppc: enable PMU counter overflow with cycle events 2021-12-17 17:57:18 +01:00
riscv target/riscv: machine: Sort the .subsections 2021-11-17 19:18:22 +10:00
rx target/rx: Drop checks for singlestep_enabled 2021-10-15 16:39:14 -07:00
s390x target/s390x/cpu.h: Remove unused SIGP_MODE defines 2021-11-17 10:17:28 +01:00
sh4 target/sh4: Set fault address in superh_cpu_do_unaligned_access 2021-11-02 07:00:52 -04:00
sparc target/sparc: Set fault address in sparc_cpu_do_unaligned_access 2021-11-02 07:00:52 -04:00
tricore target/tricore: Drop check for singlestep_enabled 2021-10-15 16:39:14 -07:00
xtensa Trivial patches branch pull request 20211101 v2 2021-11-03 11:24:09 -04:00
Kconfig meson: Introduce target-specific Kconfig 2021-07-09 18:21:34 +02:00
meson.build Drop the deprecated unicore32 target 2021-05-12 18:20:52 +02:00