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Add CPUClass::tlb_fill.

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Improve tlb_vaddr_to_host for use by ARM SVE no-fault loads.
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Merge remote-tracking branch 'remotes/rth/tags/pull-tcg-20190510' into staging

Add CPUClass::tlb_fill.
Improve tlb_vaddr_to_host for use by ARM SVE no-fault loads.

# gpg: Signature made Fri 10 May 2019 19:48:37 BST
# gpg:                using RSA key 7A481E78868B4DB6A85A05C064DF38E8AF7E215F
# gpg:                issuer "richard.henderson@linaro.org"
# gpg: Good signature from "Richard Henderson <richard.henderson@linaro.org>" [full]
# Primary key fingerprint: 7A48 1E78 868B 4DB6 A85A  05C0 64DF 38E8 AF7E 215F

* remotes/rth/tags/pull-tcg-20190510: (27 commits)
  tcg: Use tlb_fill probe from tlb_vaddr_to_host
  tcg: Remove CPUClass::handle_mmu_fault
  tcg: Use CPUClass::tlb_fill in cputlb.c
  target/xtensa: Convert to CPUClass::tlb_fill
  target/unicore32: Convert to CPUClass::tlb_fill
  target/tricore: Convert to CPUClass::tlb_fill
  target/tilegx: Convert to CPUClass::tlb_fill
  target/sparc: Convert to CPUClass::tlb_fill
  target/sh4: Convert to CPUClass::tlb_fill
  target/s390x: Convert to CPUClass::tlb_fill
  target/riscv: Convert to CPUClass::tlb_fill
  target/ppc: Convert to CPUClass::tlb_fill
  target/openrisc: Convert to CPUClass::tlb_fill
  target/nios2: Convert to CPUClass::tlb_fill
  target/moxie: Convert to CPUClass::tlb_fill
  target/mips: Convert to CPUClass::tlb_fill
  target/mips: Tidy control flow in mips_cpu_handle_mmu_fault
  target/mips: Pass a valid error to raise_mmu_exception for user-only
  target/microblaze: Convert to CPUClass::tlb_fill
  target/m68k: Convert to CPUClass::tlb_fill
  ...

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
This commit is contained in:
Peter Maydell 2019-05-16 13:15:08 +01:00
commit d8276573da
83 changed files with 868 additions and 1131 deletions
Download patch file Download diff file Expand all files Collapse all files

50
include/exec/cpu_ldst.h
View file

@ -433,50 +433,20 @@ static inline CPUTLBEntry *tlb_entry(CPUArchState *env, uintptr_t mmu_idx,
* @mmu_idx: MMU index to use for lookup
*
* Look up the specified guest virtual index in the TCG softmmu TLB.
* If the TLB contains a host virtual address suitable for direct RAM
* access, then return it. Otherwise (TLB miss, TLB entry is for an
* I/O access, etc) return NULL.
*
* This is the equivalent of the initial fast-path code used by
* TCG backends for guest load and store accesses.
* If we can translate a host virtual address suitable for direct RAM
* access, without causing a guest exception, then return it.
* Otherwise (TLB entry is for an I/O access, guest software
* TLB fill required, etc) return NULL.
*/
#ifdef CONFIG_USER_ONLY
static inline void *tlb_vaddr_to_host(CPUArchState *env, abi_ptr addr,
int access_type, int mmu_idx)
MMUAccessType access_type, int mmu_idx)
{
#if defined(CONFIG_USER_ONLY)
return g2h(addr);
#else
CPUTLBEntry *tlbentry = tlb_entry(env, mmu_idx, addr);
abi_ptr tlb_addr;
uintptr_t haddr;
switch (access_type) {
case 0:
tlb_addr = tlbentry->addr_read;
break;
case 1:
tlb_addr = tlb_addr_write(tlbentry);
break;
case 2:
tlb_addr = tlbentry->addr_code;
break;
default:
g_assert_not_reached();
}
if (!tlb_hit(tlb_addr, addr)) {
/* TLB entry is for a different page */
return NULL;
}
if (tlb_addr & ~TARGET_PAGE_MASK) {
/* IO access */
return NULL;
}
haddr = addr + tlbentry->addend;
return (void *)haddr;
#endif /* defined(CONFIG_USER_ONLY) */
}
#else
void *tlb_vaddr_to_host(CPUArchState *env, abi_ptr addr,
MMUAccessType access_type, int mmu_idx);
#endif
#endif /* CPU_LDST_H */

9
include/exec/exec-all.h
View file

@ -474,15 +474,6 @@ static inline void assert_no_pages_locked(void)
*/
struct MemoryRegionSection *iotlb_to_section(CPUState *cpu,
hwaddr index, MemTxAttrs attrs);
/*
* Note: tlb_fill() can trigger a resize of the TLB. This means that all of the
* caller's prior references to the TLB table (e.g. CPUTLBEntry pointers) must
* be discarded and looked up again (e.g. via tlb_entry()).
*/
void tlb_fill(CPUState *cpu, target_ulong addr, int size,
MMUAccessType access_type, int mmu_idx, uintptr_t retaddr);
#endif
#if defined(CONFIG_USER_ONLY)