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[Qemu-devel] [PATCH 1/9] exec: introduce cpu_reload_memory_map
From: |
Paolo Bonzini |
Subject: |
[Qemu-devel] [PATCH 1/9] exec: introduce cpu_reload_memory_map |
Date: |
Fri, 6 Feb 2015 17:55:20 +0100 |
This for now is a simple TLB flush. This can change later for two
reasons:
1) an AddressSpaceDispatch will be cached in the CPUState object
2) it will not be possible to do tlb_flush once the TCG-generated code
runs outside the BQL.
Reviewed-by: Fam Zheng <address@hidden>
Signed-off-by: Paolo Bonzini <address@hidden>
---
cpu-exec.c | 6 ++++++
exec.c | 2 +-
include/exec/exec-all.h | 1 +
3 files changed, 8 insertions(+), 1 deletion(-)
diff --git a/cpu-exec.c b/cpu-exec.c
index fa506e6..78fe382 100644
--- a/cpu-exec.c
+++ b/cpu-exec.c
@@ -141,6 +141,12 @@ void cpu_resume_from_signal(CPUState *cpu, void *puc)
cpu->exception_index = -1;
siglongjmp(cpu->jmp_env, 1);
}
+
+void cpu_reload_memory_map(CPUState *cpu)
+{
+ /* The TLB is protected by the iothread lock. */
+ tlb_flush(cpu, 1);
+}
#endif
/* Execute a TB, and fix up the CPU state afterwards if necessary */
diff --git a/exec.c b/exec.c
index 6b79ad1..5a75909 100644
--- a/exec.c
+++ b/exec.c
@@ -2026,7 +2026,7 @@ static void tcg_commit(MemoryListener *listener)
if (cpu->tcg_as_listener != listener) {
continue;
}
- tlb_flush(cpu, 1);
+ cpu_reload_memory_map(cpu);
}
}
diff --git a/include/exec/exec-all.h b/include/exec/exec-all.h
index 6a15448..1b30813 100644
--- a/include/exec/exec-all.h
+++ b/include/exec/exec-all.h
@@ -96,6 +96,7 @@ void tb_invalidate_phys_page_range(tb_page_addr_t start,
tb_page_addr_t end,
void tb_invalidate_phys_range(tb_page_addr_t start, tb_page_addr_t end,
int is_cpu_write_access);
#if !defined(CONFIG_USER_ONLY)
+void cpu_reload_memory_map(CPUState *cpu);
void tcg_cpu_address_space_init(CPUState *cpu, AddressSpace *as);
/* cputlb.c */
void tlb_flush_page(CPUState *cpu, target_ulong addr);
--
1.8.3.1
- [Qemu-devel] [PATCH v3 0/9] RCUification of the memory API, part 2, Paolo Bonzini, 2015/02/06
- [Qemu-devel] [PATCH 3/9] exec: RCUify AddressSpaceDispatch, Paolo Bonzini, 2015/02/06
- [Qemu-devel] [PATCH 5/9] rcu: introduce RCU-enabled QLIST, Paolo Bonzini, 2015/02/06
- [Qemu-devel] [PATCH 8/9] exec: convert ram_list to QLIST, Paolo Bonzini, 2015/02/06
- [Qemu-devel] [PATCH 1/9] exec: introduce cpu_reload_memory_map,
Paolo Bonzini <=
- [Qemu-devel] [PATCH 7/9] cosmetic changes preparing for the following patches, Paolo Bonzini, 2015/02/06
- [Qemu-devel] [PATCH 6/9] exec: protect mru_block with RCU, Paolo Bonzini, 2015/02/06
- [Qemu-devel] [PATCH 2/9] exec: make iotlb RCU-friendly, Paolo Bonzini, 2015/02/06
- [Qemu-devel] [PATCH 4/9] rcu: prod call_rcu thread when calling synchronize_rcu, Paolo Bonzini, 2015/02/06
- [Qemu-devel] [PATCH 9/9] Convert ram_list to RCU, Paolo Bonzini, 2015/02/06