Re: [PATCH v4 03/45] target/arm: Trap non-streaming usage when Streaming SVE is active

On Mon, 4 Jul 2022 at 09:28, Richard Henderson wrote: > > On 7/1/22 16:36, Peter Maydell wrote: > >> +/* > >> + * The SME exception we are testing for is raised via > >> + * AArch64.CheckFPAdvSIMDEnabled(), and for AArch32 this is called > >> + * when EL1 is using A64 or EL2 using

Re: [PATCH v4 03/45] target/arm: Trap non-streaming usage when Streaming SVE is active

On 7/1/22 16:36, Peter Maydell wrote: +/* + * The SME exception we are testing for is raised via + * AArch64.CheckFPAdvSIMDEnabled(), and for AArch32 this is called + * when EL1 is using A64 or EL2 using A64 and !TGE. + * See AArch32.CheckAdvSIMDOrFPEnabled(). + */ +

Re: [PATCH v4 03/45] target/arm: Trap non-streaming usage when Streaming SVE is active

On Tue, 28 Jun 2022 at 05:26, Richard Henderson wrote: > > This new behaviour is in the ARM pseudocode function > AArch64.CheckFPAdvSIMDEnabled, which applies to AArch32 > via AArch32.CheckAdvSIMDOrFPEnabled when the EL to which > the trap would be delivered is in AArch64 mode. > > Given that

[PATCH v4 03/45] target/arm: Trap non-streaming usage when Streaming SVE is active

This new behaviour is in the ARM pseudocode function AArch64.CheckFPAdvSIMDEnabled, which applies to AArch32 via AArch32.CheckAdvSIMDOrFPEnabled when the EL to which the trap would be delivered is in AArch64 mode. Given that ARMv9 drops support for AArch32 outside EL0, the trap EL detection ought