| Message ID | 20241005200600.493604-20-richard.henderson@linaro.org (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | accel/tcg: Introduce tlb_fill_align hook | expand |
On 10/5/24 22:05, Richard Henderson wrote: > Determine cache attributes, and thence Device vs Normal memory, "thence" ? Other than that I have no arm knowledge to review the patch below.... Helge > earlier in the function. We have an existing regime_is_stage2 > if block into which this can be slotted. > > Signed-off-by: Richard Henderson <richard.henderson@linaro.org> > --- > target/arm/ptw.c | 49 ++++++++++++++++++++++++------------------------ > 1 file changed, 25 insertions(+), 24 deletions(-) > > diff --git a/target/arm/ptw.c b/target/arm/ptw.c > index 238b2c92a9..0a1a820362 100644 > --- a/target/arm/ptw.c > +++ b/target/arm/ptw.c > @@ -2029,8 +2029,20 @@ static bool get_phys_addr_lpae(CPUARMState *env, S1Translate *ptw, > xn = extract64(attrs, 53, 2); > result->f.prot = get_S2prot(env, ap, xn, ptw->in_s1_is_el0); > } > + > + result->cacheattrs.is_s2_format = true; > + result->cacheattrs.attrs = extract32(attrs, 2, 4); > + /* > + * Security state does not really affect HCR_EL2.FWB; > + * we only need to filter FWB for aa32 or other FEAT. > + */ > + device = S2_attrs_are_device(arm_hcr_el2_eff(env), > + result->cacheattrs.attrs); > } else { > int nse, ns = extract32(attrs, 5, 1); > + uint8_t attrindx; > + uint64_t mair; > + > switch (out_space) { > case ARMSS_Root: > /* > @@ -2102,6 +2114,19 @@ static bool get_phys_addr_lpae(CPUARMState *env, S1Translate *ptw, > */ > result->f.prot = get_S1prot(env, mmu_idx, aarch64, ap, xn, pxn, > result->f.attrs.space, out_space); > + > + /* Index into MAIR registers for cache attributes */ > + attrindx = extract32(attrs, 2, 3); > + mair = env->cp15.mair_el[regime_el(env, mmu_idx)]; > + assert(attrindx <= 7); > + result->cacheattrs.is_s2_format = false; > + result->cacheattrs.attrs = extract64(mair, attrindx * 8, 8); > + > + /* When in aarch64 mode, and BTI is enabled, remember GP in the TLB. */ > + if (aarch64 && cpu_isar_feature(aa64_bti, cpu)) { > + result->f.extra.arm.guarded = extract64(attrs, 50, 1); /* GP */ > + } > + device = S1_attrs_are_device(result->cacheattrs.attrs); > } > > if (!(result->f.prot & (1 << access_type))) { > @@ -2131,30 +2156,6 @@ static bool get_phys_addr_lpae(CPUARMState *env, S1Translate *ptw, > result->f.attrs.space = out_space; > result->f.attrs.secure = arm_space_is_secure(out_space); > > - if (regime_is_stage2(mmu_idx)) { > - result->cacheattrs.is_s2_format = true; > - result->cacheattrs.attrs = extract32(attrs, 2, 4); > - /* > - * Security state does not really affect HCR_EL2.FWB; > - * we only need to filter FWB for aa32 or other FEAT. > - */ > - device = S2_attrs_are_device(arm_hcr_el2_eff(env), > - result->cacheattrs.attrs); > - } else { > - /* Index into MAIR registers for cache attributes */ > - uint8_t attrindx = extract32(attrs, 2, 3); > - uint64_t mair = env->cp15.mair_el[regime_el(env, mmu_idx)]; > - assert(attrindx <= 7); > - result->cacheattrs.is_s2_format = false; > - result->cacheattrs.attrs = extract64(mair, attrindx * 8, 8); > - > - /* When in aarch64 mode, and BTI is enabled, remember GP in the TLB. */ > - if (aarch64 && cpu_isar_feature(aa64_bti, cpu)) { > - result->f.extra.arm.guarded = extract64(attrs, 50, 1); /* GP */ > - } > - device = S1_attrs_are_device(result->cacheattrs.attrs); > - } > - > /* > * Enable alignment checks on Device memory. > *
On Sat, 5 Oct 2024 at 21:06, Richard Henderson <richard.henderson@linaro.org> wrote: > > Determine cache attributes, and thence Device vs Normal memory, > earlier in the function. We have an existing regime_is_stage2 > if block into which this can be slotted. > > Signed-off-by: Richard Henderson <richard.henderson@linaro.org> > --- > target/arm/ptw.c | 49 ++++++++++++++++++++++++------------------------ > 1 file changed, 25 insertions(+), 24 deletions(-) Reviewed-by: Peter Maydell <peter.maydell@linaro.org> thanks -- PMM
diff --git a/target/arm/ptw.c b/target/arm/ptw.c index 238b2c92a9..0a1a820362 100644 --- a/target/arm/ptw.c +++ b/target/arm/ptw.c @@ -2029,8 +2029,20 @@ static bool get_phys_addr_lpae(CPUARMState *env, S1Translate *ptw, xn = extract64(attrs, 53, 2); result->f.prot = get_S2prot(env, ap, xn, ptw->in_s1_is_el0); } + + result->cacheattrs.is_s2_format = true; + result->cacheattrs.attrs = extract32(attrs, 2, 4); + /* + * Security state does not really affect HCR_EL2.FWB; + * we only need to filter FWB for aa32 or other FEAT. + */ + device = S2_attrs_are_device(arm_hcr_el2_eff(env), + result->cacheattrs.attrs); } else { int nse, ns = extract32(attrs, 5, 1); + uint8_t attrindx; + uint64_t mair; + switch (out_space) { case ARMSS_Root: /* @@ -2102,6 +2114,19 @@ static bool get_phys_addr_lpae(CPUARMState *env, S1Translate *ptw, */ result->f.prot = get_S1prot(env, mmu_idx, aarch64, ap, xn, pxn, result->f.attrs.space, out_space); + + /* Index into MAIR registers for cache attributes */ + attrindx = extract32(attrs, 2, 3); + mair = env->cp15.mair_el[regime_el(env, mmu_idx)]; + assert(attrindx <= 7); + result->cacheattrs.is_s2_format = false; + result->cacheattrs.attrs = extract64(mair, attrindx * 8, 8); + + /* When in aarch64 mode, and BTI is enabled, remember GP in the TLB. */ + if (aarch64 && cpu_isar_feature(aa64_bti, cpu)) { + result->f.extra.arm.guarded = extract64(attrs, 50, 1); /* GP */ + } + device = S1_attrs_are_device(result->cacheattrs.attrs); } if (!(result->f.prot & (1 << access_type))) { @@ -2131,30 +2156,6 @@ static bool get_phys_addr_lpae(CPUARMState *env, S1Translate *ptw, result->f.attrs.space = out_space; result->f.attrs.secure = arm_space_is_secure(out_space); - if (regime_is_stage2(mmu_idx)) { - result->cacheattrs.is_s2_format = true; - result->cacheattrs.attrs = extract32(attrs, 2, 4); - /* - * Security state does not really affect HCR_EL2.FWB; - * we only need to filter FWB for aa32 or other FEAT. - */ - device = S2_attrs_are_device(arm_hcr_el2_eff(env), - result->cacheattrs.attrs); - } else { - /* Index into MAIR registers for cache attributes */ - uint8_t attrindx = extract32(attrs, 2, 3); - uint64_t mair = env->cp15.mair_el[regime_el(env, mmu_idx)]; - assert(attrindx <= 7); - result->cacheattrs.is_s2_format = false; - result->cacheattrs.attrs = extract64(mair, attrindx * 8, 8); - - /* When in aarch64 mode, and BTI is enabled, remember GP in the TLB. */ - if (aarch64 && cpu_isar_feature(aa64_bti, cpu)) { - result->f.extra.arm.guarded = extract64(attrs, 50, 1); /* GP */ - } - device = S1_attrs_are_device(result->cacheattrs.attrs); - } - /* * Enable alignment checks on Device memory. *
Determine cache attributes, and thence Device vs Normal memory, earlier in the function. We have an existing regime_is_stage2 if block into which this can be slotted. Signed-off-by: Richard Henderson <richard.henderson@linaro.org> --- target/arm/ptw.c | 49 ++++++++++++++++++++++++------------------------ 1 file changed, 25 insertions(+), 24 deletions(-)