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target/arm: do S1_ptw_translate() before address space lookup 

In the secure stage 2 translation regime, the VSTCR.SW and VTCR.NSW
bits can invert the secure flag for pagetable walks. This patchset
allows S1_ptw_translate() to change the non-secure bit.

Signed-off-by: Rémi Denis-Courmont <remi.denis.courmont@huawei.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20210112104511.36576-11-remi.denis.courmont@huawei.com
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
This commit is contained in:
Rémi Denis-Courmont 2021-01-12 12:45:03 +02:00 committed by Peter Maydell
parent c4f060e89e
commit 3d4bd39743
1 changed files with 6 additions and 3 deletions
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9
target/arm/helper.c
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@ -10393,7 +10393,7 @@ static bool get_level1_table_address(CPUARMState *env, ARMMMUIdx mmu_idx,
/* Translate a S1 pagetable walk through S2 if needed. */
static hwaddr S1_ptw_translate(CPUARMState *env, ARMMMUIdx mmu_idx,
hwaddr addr, MemTxAttrs txattrs,
hwaddr addr, bool *is_secure,
ARMMMUFaultInfo *fi)
{
if (arm_mmu_idx_is_stage1_of_2(mmu_idx) &&
@ -10403,6 +10403,9 @@ static hwaddr S1_ptw_translate(CPUARMState *env, ARMMMUIdx mmu_idx,
int s2prot;
int ret;
ARMCacheAttrs cacheattrs = {};
MemTxAttrs txattrs = {};
assert(!*is_secure); /* TODO: S-EL2 */
ret = get_phys_addr_lpae(env, addr, MMU_DATA_LOAD, ARMMMUIdx_Stage2,
false,
@ -10443,9 +10446,9 @@ static uint32_t arm_ldl_ptw(CPUState *cs, hwaddr addr, bool is_secure,
AddressSpace *as;
uint32_t data;
addr = S1_ptw_translate(env, mmu_idx, addr, &is_secure, fi);
attrs.secure = is_secure;
as = arm_addressspace(cs, attrs);
addr = S1_ptw_translate(env, mmu_idx, addr, attrs, fi);
if (fi->s1ptw) {
return 0;
}
@ -10472,9 +10475,9 @@ static uint64_t arm_ldq_ptw(CPUState *cs, hwaddr addr, bool is_secure,
AddressSpace *as;
uint64_t data;
addr = S1_ptw_translate(env, mmu_idx, addr, &is_secure, fi);
attrs.secure = is_secure;
as = arm_addressspace(cs, attrs);
addr = S1_ptw_translate(env, mmu_idx, addr, attrs, fi);
if (fi->s1ptw) {
return 0;
}