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Re: [RFC v9 20/32] cpu: Move tlb_fill to tcg_ops
From: |
Alex Bennée |
Subject: |
Re: [RFC v9 20/32] cpu: Move tlb_fill to tcg_ops |
Date: |
Wed, 09 Dec 2020 16:12:40 +0000 |
User-agent: |
mu4e 1.5.7; emacs 28.0.50 |
Claudio Fontana <cfontana@suse.de> writes:
> On 12/9/20 12:26 PM, Alex Bennée wrote:
>>
>> Claudio Fontana <cfontana@suse.de> writes:
>>
>>> From: Eduardo Habkost <ehabkost@redhat.com>
>>>
>>> Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
>>> [claudio: wrapped in CONFIG_TCG]
>>> Signed-off-by: Claudio Fontana <cfontana@suse.de>
>>> Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
>>> ---
>>> accel/tcg/cputlb.c | 6 +++---
>>> accel/tcg/user-exec.c | 6 +++---
>>> include/hw/core/cpu.h | 9 ---------
>>> include/hw/core/tcg-cpu-ops.h | 12 ++++++++++++
>>> target/alpha/cpu.c | 2 +-
>>> target/arm/cpu.c | 2 +-
>>> target/avr/cpu.c | 2 +-
>>> target/cris/cpu.c | 2 +-
>>> target/hppa/cpu.c | 2 +-
>>> target/i386/tcg-cpu.c | 2 +-
>>> target/lm32/cpu.c | 2 +-
>>> target/m68k/cpu.c | 2 +-
>>> target/microblaze/cpu.c | 2 +-
>>> target/mips/cpu.c | 2 +-
>>> target/moxie/cpu.c | 2 +-
>>> target/nios2/cpu.c | 2 +-
>>> target/openrisc/cpu.c | 2 +-
>>> target/ppc/translate_init.c.inc | 2 +-
>>> target/riscv/cpu.c | 2 +-
>>> target/rx/cpu.c | 2 +-
>>> target/s390x/cpu.c | 2 +-
>>> target/sh4/cpu.c | 2 +-
>>> target/sparc/cpu.c | 2 +-
>>> target/tilegx/cpu.c | 2 +-
>>> target/tricore/cpu.c | 2 +-
>>> target/unicore32/cpu.c | 2 +-
>>> target/xtensa/cpu.c | 2 +-
>>> 27 files changed, 41 insertions(+), 38 deletions(-)
>>>
>>> diff --git a/accel/tcg/cputlb.c b/accel/tcg/cputlb.c
>>> index 42ab79c1a5..2dc71b5528 100644
>>> --- a/accel/tcg/cputlb.c
>>> +++ b/accel/tcg/cputlb.c
>>> @@ -1286,7 +1286,7 @@ static void tlb_fill(CPUState *cpu, target_ulong
>>> addr, int size,
>>> * This is not a probe, so only valid return is success; failure
>>> * should result in exception + longjmp to the cpu loop.
>>> */
>>> - ok = cc->tlb_fill(cpu, addr, size, access_type, mmu_idx, false,
>>> retaddr);
>>> + ok = cc->tcg_ops.tlb_fill(cpu, addr, size, access_type, mmu_idx,
>>> false, retaddr);
>>> assert(ok);
>>> }
>>>
>>> @@ -1557,8 +1557,8 @@ static int probe_access_internal(CPUArchState *env,
>>> target_ulong addr,
>>> CPUState *cs = env_cpu(env);
>>> CPUClass *cc = CPU_GET_CLASS(cs);
>>>
>>> - if (!cc->tlb_fill(cs, addr, fault_size, access_type,
>>> - mmu_idx, nonfault, retaddr)) {
>>> + if (!cc->tcg_ops.tlb_fill(cs, addr, fault_size, access_type,
>>> + mmu_idx, nonfault, retaddr)) {
>>> /* Non-faulting page table read failed. */
>>> *phost = NULL;
>>> return TLB_INVALID_MASK;
>>> diff --git a/accel/tcg/user-exec.c b/accel/tcg/user-exec.c
>>> index 4ebe25461a..7f53992251 100644
>>> --- a/accel/tcg/user-exec.c
>>> +++ b/accel/tcg/user-exec.c
>>> @@ -186,7 +186,7 @@ static inline int handle_cpu_signal(uintptr_t pc,
>>> siginfo_t *info,
>>> clear_helper_retaddr();
>>>
>>> cc = CPU_GET_CLASS(cpu);
>>> - cc->tlb_fill(cpu, address, 0, access_type, MMU_USER_IDX, false, pc);
>>> + cc->tcg_ops.tlb_fill(cpu, address, 0, access_type, MMU_USER_IDX,
>>> false, pc);
>>> g_assert_not_reached();
>>> }
>>>
>>> @@ -216,8 +216,8 @@ static int probe_access_internal(CPUArchState *env,
>>> target_ulong addr,
>>> } else {
>>> CPUState *cpu = env_cpu(env);
>>> CPUClass *cc = CPU_GET_CLASS(cpu);
>>> - cc->tlb_fill(cpu, addr, fault_size, access_type,
>>> - MMU_USER_IDX, false, ra);
>>> + cc->tcg_ops.tlb_fill(cpu, addr, fault_size, access_type,
>>> + MMU_USER_IDX, false, ra);
>>> g_assert_not_reached();
>>> }
>>> }
>>> diff --git a/include/hw/core/cpu.h b/include/hw/core/cpu.h
>>> index 52142e9094..c82ef261c6 100644
>>> --- a/include/hw/core/cpu.h
>>> +++ b/include/hw/core/cpu.h
>>> @@ -110,12 +110,6 @@ struct TranslationBlock;
>>> * If the target behaviour here is anything other than "set
>>> * the PC register to the value passed in" then the target must
>>> * also implement the synchronize_from_tb hook.
>>> - * @tlb_fill: Callback for handling a softmmu tlb miss or user-only
>>> - * address fault. For system mode, if the access is valid, call
>>> - * tlb_set_page and return true; if the access is invalid, and
>>> - * probe is true, return false; otherwise raise an exception and
>>> - * do not return. For user-only mode, always raise an exception
>>> - * and do not return.
>>> * @get_phys_page_debug: Callback for obtaining a physical address.
>>> * @get_phys_page_attrs_debug: Callback for obtaining a physical address
>>> and the
>>> * associated memory transaction attributes to use for the access.
>>> @@ -183,9 +177,6 @@ struct CPUClass {
>>> void (*get_memory_mapping)(CPUState *cpu, MemoryMappingList *list,
>>> Error **errp);
>>> void (*set_pc)(CPUState *cpu, vaddr value);
>>> - bool (*tlb_fill)(CPUState *cpu, vaddr address, int size,
>>> - MMUAccessType access_type, int mmu_idx,
>>> - bool probe, uintptr_t retaddr);
>>> hwaddr (*get_phys_page_debug)(CPUState *cpu, vaddr addr);
>>> hwaddr (*get_phys_page_attrs_debug)(CPUState *cpu, vaddr addr,
>>> MemTxAttrs *attrs);
>>> diff --git a/include/hw/core/tcg-cpu-ops.h b/include/hw/core/tcg-cpu-ops.h
>>> index e12f32919b..2ea94acca0 100644
>>> --- a/include/hw/core/tcg-cpu-ops.h
>>> +++ b/include/hw/core/tcg-cpu-ops.h
>>> @@ -37,6 +37,18 @@ typedef struct TcgCpuOperations {
>>> void (*cpu_exec_exit)(CPUState *cpu);
>>> /** @cpu_exec_interrupt: Callback for processing interrupts in
>>> cpu_exec */
>>> bool (*cpu_exec_interrupt)(CPUState *cpu, int interrupt_request);
>>> + /**
>>> + * @tlb_fill: Handle a softmmu tlb miss or user-only address fault
>>> + *
>>> + * For system mode, if the access is valid, call tlb_set_page
>>> + * and return true; if the access is invalid, and probe is
>>> + * true, return false; otherwise raise an exception and do
>>> + * not return. For user-only mode, always raise an exception
>>> + * and do not return.
>>> + */
>>> + bool (*tlb_fill)(CPUState *cpu, vaddr address, int size,
>>> + MMUAccessType access_type, int mmu_idx,
>>> + bool probe, uintptr_t retaddr);
>>
>> As per previous patch, here is a chance to clean-up the comment.
>
>
> Could you provide the text? I think you understand this better than I
> do...
As Eduardo pointed out the kernel-doc pass won't work with in-line
functions unless they are extracted and typedefed which seems excessive
considering we don't currently generate docs from these headers. Ignore
the request.
>
>
>>
>> Otherwise:
>>
>> Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
>>
>
> Thanks!
>
> Claudio
--
Alex Bennée