target/arm: Use probe_access_full for BTI

Add a field to TARGET_PAGE_ENTRY_EXTRA to hold the guarded bit.
In is_guarded_page, use probe_access_full instead of just guessing
that the tlb entry is still present.  Also handles the FIXME about
executing from device memory.

Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20221011031911.2408754-4-richard.henderson@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
This commit is contained in:
Richard Henderson 2022-10-10 20:18:50 -07:00 committed by Peter Maydell
parent b8967ddf39
commit 937f224559
5 changed files with 20 additions and 31 deletions

View file

@ -1095,6 +1095,7 @@ typedef struct ARMCacheAttrs {
unsigned int attrs:8;
unsigned int shareability:2; /* as in the SH field of the VMSAv8-64 PTEs */
bool is_s2_format:1;
bool guarded:1; /* guarded bit of the v8-64 PTE */
} ARMCacheAttrs;
/* Fields that are valid upon success. */