motorhead/qemu
1
0
Fork 0
mirror of https://github.com/Motorhead1991/qemu.git synced 2025-08-06 09:13:55 -06:00
Code Issues Projects Releases Packages Wiki Activity Actions

target/arm: Use probe_access_full for BTI

Browse source 
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
Download patch file Download diff file Expand all files Collapse all files

7
target/arm/ptw.c
View file

@ -1313,9 +1313,10 @@ static bool get_phys_addr_lpae(CPUARMState *env, uint64_t address,
*/
result->f.attrs.secure = false;
}
/* When in aarch64 mode, and BTI is enabled, remember GP in the IOTLB. */
if (aarch64 && guarded && cpu_isar_feature(aa64_bti, cpu)) {
arm_tlb_bti_gp(&result->f.attrs) = true;
/* When in aarch64 mode, and BTI is enabled, remember GP in the TLB. */
if (aarch64 && cpu_isar_feature(aa64_bti, cpu)) {
result->f.guarded = guarded;
}
if (mmu_idx == ARMMMUIdx_Stage2 || mmu_idx == ARMMMUIdx_Stage2_S) {