xemu/target
Peter Maydell b9377d1c5f target/arm: Always honour HCR_EL2.TSC when HCR_EL2.NV is set
The HCR_EL2.TSC trap for trapping EL1 execution of SMC instructions
has a behaviour change for FEAT_NV when EL3 is not implemented:

 * in older architecture versions TSC was required to have no
   effect (i.e. the SMC insn UNDEFs)
 * with FEAT_NV, when HCR_EL2.NV == 1 the trap must apply
   (i.e. SMC traps to EL2, as it already does in all cases when
   EL3 is implemented)
 * in newer architecture versions, the behaviour either without
   FEAT_NV or with FEAT_NV and HCR_EL2.NV == 0 is relaxed to
   an IMPDEF choice between UNDEF and trap-to-EL2 (i.e. it is
   permitted to always honour HCR_EL2.TSC) for AArch64 only

Add the condition to honour the trap bit when HCR_EL2.NV == 1.  We
leave the HCR_EL2.NV == 0 case with the existing (UNDEF) behaviour,
as our IMPDEF choice (both because it avoids a behaviour change
for older CPU models and because we'd have to distinguish AArch32
from AArch64 if we opted to trap to EL2).

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Tested-by: Miguel Luis <miguel.luis@oracle.com>
2024-01-09 14:43:46 +00:00
..
alpha target/alpha: Use generic cpu_list() 2024-01-05 16:20:14 +01:00
arm target/arm: Always honour HCR_EL2.TSC when HCR_EL2.NV is set 2024-01-09 14:43:46 +00:00
avr target/avr: Use generic cpu_list() 2024-01-05 16:20:14 +01:00
cris target/cris: Use generic cpu_list() 2024-01-05 16:20:14 +01:00
hexagon target/hexagon: Use generic cpu_list() 2024-01-05 16:20:14 +01:00
hppa system/cpus: rename qemu_mutex_lock_iothread() to bql_lock() 2024-01-08 10:45:43 -05:00
i386 qemu/main-loop: rename qemu_cond_wait_iothread() to qemu_cond_wait_bql() 2024-01-08 10:45:43 -05:00
loongarch system/cpus: rename qemu_mutex_lock_iothread() to bql_lock() 2024-01-08 10:45:43 -05:00
m68k target/m68k: Use generic cpu_list() 2024-01-05 16:20:14 +01:00
microblaze target/microblaze: Constify VMState in machine.c 2023-12-29 11:17:30 +11:00
mips system/cpus: rename qemu_mutex_lock_iothread() to bql_lock() 2024-01-08 10:45:43 -05:00
nios2 target: Move ArchCPUClass definition to 'cpu.h' 2023-11-07 13:08:48 +01:00
openrisc system/cpus: rename qemu_mutex_lock_iothread() to bql_lock() 2024-01-08 10:45:43 -05:00
ppc qemu/main-loop: rename QEMU_IOTHREAD_LOCK_GUARD to BQL_LOCK_GUARD 2024-01-08 10:45:43 -05:00
riscv qemu/main-loop: rename QEMU_IOTHREAD_LOCK_GUARD to BQL_LOCK_GUARD 2024-01-08 10:45:43 -05:00
rx target/rx: Use generic cpu_list() 2024-01-05 16:20:14 +01:00
s390x system/cpus: rename qemu_mutex_lock_iothread() to bql_lock() 2024-01-08 10:45:43 -05:00
sh4 target/sh4: Use generic cpu_list() 2024-01-05 16:20:14 +01:00
sparc system/cpus: rename qemu_mutex_lock_iothread() to bql_lock() 2024-01-08 10:45:43 -05:00
tricore target/tricore: Use generic cpu_list() 2024-01-05 16:20:14 +01:00
xtensa system/cpus: rename qemu_mutex_lock_iothread() to bql_lock() 2024-01-08 10:45:43 -05:00
Kconfig hw/loongarch: Add support loongson3 virt machine type. 2022-06-06 18:09:03 +00:00
meson.build target/loongarch: Add target build suport 2022-06-06 18:09:03 +00:00