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accel/tcg: Introduce probe_access_full

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Add an interface to return the CPUTLBEntryFull struct
that goes with the lookup.  The result is not intended
to be valid across multiple lookups, so the user must
use the results immediately.

Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
This commit is contained in:
Richard Henderson
2022-08-19 15:49:41 -07:00
parent c3c8bf579b
commit af803a4fcb
3 changed files with 45 additions and 18 deletions
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15
include/exec/exec-all.h
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@@ -434,6 +434,21 @@ int probe_access_flags(CPUArchState *env, target_ulong addr,
MMUAccessType access_type, int mmu_idx,
bool nonfault, void **phost, uintptr_t retaddr);
#ifndef CONFIG_USER_ONLY
/**
* probe_access_full:
* Like probe_access_flags, except also return into @pfull.
*
* The CPUTLBEntryFull structure returned via @pfull is transient
* and must be consumed or copied immediately, before any further
* access or changes to TLB @mmu_idx.
*/
int probe_access_full(CPUArchState *env, target_ulong addr,
MMUAccessType access_type, int mmu_idx,
bool nonfault, void **phost,
CPUTLBEntryFull **pfull, uintptr_t retaddr);
#endif
#define CODE_GEN_ALIGN 16 /* must be >= of the size of a icache line */
/* Estimated block size for TB allocation. */