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Re: [PATCH v8 42/45] target/arm: Cache the Tagged bit for a page in MemT
From: |
Peter Maydell |
Subject: |
Re: [PATCH v8 42/45] target/arm: Cache the Tagged bit for a page in MemTxAttrs |
Date: |
Thu, 25 Jun 2020 13:59:17 +0100 |
On Tue, 23 Jun 2020 at 20:37, Richard Henderson
<richard.henderson@linaro.org> wrote:
>
> This "bit" is a particular value of the page's MemAttr.
>
> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
> ---
> v6: Test HCR_EL2.{DC,DCT}; test Stage2 attributes.
> v8: Fill in cacheattrs for S1 disabled; retain tagging when
> combining attributes; set mte_tagging in arm_cpu_tlb_fill.
> ---
> target/arm/helper.c | 48 ++++++++++++++++++++++++++++++++++++++---
> target/arm/tlb_helper.c | 5 +++++
> 2 files changed, 50 insertions(+), 3 deletions(-)
> + } else if (access_type == MMU_INST_FETCH) {
> + if (regime_sctlr(env, mmu_idx) & SCTLR_I) {
> + memattr = 0xee; /* Normal, WT, RA, NT */
> + } else {
> + memattr = 0x44; /* Normal, NC, No */
> + }
> + cacheattrs->shareability = 2; /* outersharable */
"outer shareable"
Otherwise
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
thanks
-- PMM
- Re: [PATCH v8 38/45] target/arm: Complete TBI clearing for user-only for SVE, (continued)
[PATCH v8 37/45] target/arm: Add mte helpers for sve scatter/gather memory ops, Richard Henderson, 2020/06/23
[PATCH v8 39/45] target/arm: Implement data cache set allocation tags, Richard Henderson, 2020/06/23
[PATCH v8 40/45] target/arm: Set PSTATE.TCO on exception entry, Richard Henderson, 2020/06/23
[PATCH v8 41/45] target/arm: Always pass cacheattr to get_phys_addr, Richard Henderson, 2020/06/23
[PATCH v8 42/45] target/arm: Cache the Tagged bit for a page in MemTxAttrs, Richard Henderson, 2020/06/23
- Re: [PATCH v8 42/45] target/arm: Cache the Tagged bit for a page in MemTxAttrs,
Peter Maydell <=
[PATCH v8 43/45] target/arm: Create tagged ram when MTE is enabled, Richard Henderson, 2020/06/23
[PATCH v8 44/45] target/arm: Add allocation tag storage for system mode, Richard Henderson, 2020/06/23
[PATCH v8 45/45] target/arm: Enable MTE, Richard Henderson, 2020/06/23
Re: [PATCH v8 00/45] target/arm: Implement ARMv8.5-MemTag, system mode, Derrick McKee, 2020/06/23