From: Richard Henderson <richard.henderson@linaro.org>
To: Dave Martin <Dave.Martin@arm.com>, Andrew Jones <drjones@redhat.com>
Cc: "peter.maydell@linaro.org" <peter.maydell@linaro.org>,
"qemu-devel@nongnu.org" <qemu-devel@nongnu.org>,
"armbru@redhat.com" <armbru@redhat.com>,
"qemu-arm@nongnu.org" <qemu-arm@nongnu.org>,
"abologna@redhat.com" <abologna@redhat.com>,
"alex.bennee@linaro.org" <alex.bennee@linaro.org>
Subject: Re: [Qemu-devel] [PATCH 05/13] target/arm/kvm: Add kvm_arch_get/put_sve
Date: Mon, 13 May 2019 09:58:59 -0700 [thread overview]
Message-ID: <956f9bc9-1024-b02a-e792-98b01d016ef4@linaro.org> (raw)
In-Reply-To: <20190513143929.GK28398@e103592.cambridge.arm.com>
On 5/13/19 7:39 AM, Dave Martin wrote:
> On that point, could TCG easily be made to expose a larger vector length
> to the kernel? I'd be interested to see what happened.
It would be easy enough to extend the maximum vector length within TCG.
Increase ARM_MAX_VQ. Alter the couple of places where we manipulate ZCR.LEN to
extend the current 4-bit mask.
How large do you need the max to be, for testing?
r~
WARNING: multiple messages have this Message-ID (diff)
From: Richard Henderson <richard.henderson@linaro.org>
To: Dave Martin <Dave.Martin@arm.com>, Andrew Jones <drjones@redhat.com>
Cc: "peter.maydell@linaro.org" <peter.maydell@linaro.org>,
"armbru@redhat.com" <armbru@redhat.com>,
"qemu-devel@nongnu.org" <qemu-devel@nongnu.org>,
"abologna@redhat.com" <abologna@redhat.com>,
"qemu-arm@nongnu.org" <qemu-arm@nongnu.org>,
"alex.bennee@linaro.org" <alex.bennee@linaro.org>
Subject: Re: [Qemu-devel] [PATCH 05/13] target/arm/kvm: Add kvm_arch_get/put_sve
Date: Mon, 13 May 2019 09:58:59 -0700 [thread overview]
Message-ID: <956f9bc9-1024-b02a-e792-98b01d016ef4@linaro.org> (raw)
In-Reply-To: <20190513143929.GK28398@e103592.cambridge.arm.com>
On 5/13/19 7:39 AM, Dave Martin wrote:
> On that point, could TCG easily be made to expose a larger vector length
> to the kernel? I'd be interested to see what happened.
It would be easy enough to extend the maximum vector length within TCG.
Increase ARM_MAX_VQ. Alter the couple of places where we manipulate ZCR.LEN to
extend the current 4-bit mask.
How large do you need the max to be, for testing?
r~
next prev parent reply other threads:[~2019-05-13 16:59 UTC|newest]
Thread overview: 131+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-05-12 8:36 [PATCH 00/13] target/arm/kvm: enable SVE in guests Andrew Jones
2019-05-12 8:36 ` [Qemu-devel] " Andrew Jones
2019-05-12 8:36 ` [PATCH 01/13] target/arm/kvm64: fix error returns Andrew Jones
2019-05-12 8:36 ` [Qemu-devel] " Andrew Jones
2019-06-05 7:20 ` Auger Eric
2019-05-12 8:36 ` [PATCH 02/13] update-linux-headers: Add sve_context.h to asm-arm64 Andrew Jones
2019-05-12 8:36 ` [Qemu-devel] " Andrew Jones
2019-06-05 7:21 ` Auger Eric
2019-06-05 7:30 ` Andrew Jones
2019-06-05 7:30 ` Andrew Jones
2019-05-12 8:36 ` [PATCH 03/13] HACK: linux header update Andrew Jones
2019-05-12 8:36 ` [Qemu-devel] " Andrew Jones
2019-05-12 8:36 ` [PATCH 04/13] target/arm/kvm: Move the get/put of fpsimd registers out Andrew Jones
2019-05-12 8:36 ` [Qemu-devel] " Andrew Jones
2019-06-05 7:15 ` Auger Eric
2019-06-05 7:27 ` Andrew Jones
2019-06-05 7:27 ` Andrew Jones
2019-05-12 8:36 ` [PATCH 05/13] target/arm/kvm: Add kvm_arch_get/put_sve Andrew Jones
2019-05-12 8:36 ` [Qemu-devel] " Andrew Jones
2019-05-13 12:31 ` Dave Martin
2019-05-13 12:31 ` [Qemu-devel] " Dave Martin
2019-05-13 13:55 ` Andrew Jones
2019-05-13 13:55 ` Andrew Jones
2019-05-13 15:31 ` Dave Martin
2019-05-13 15:31 ` Dave Martin
2019-05-13 15:40 ` Peter Maydell
2019-05-13 15:40 ` Peter Maydell
2019-05-13 16:05 ` Dave Martin
2019-05-13 16:05 ` Dave Martin
2019-05-13 16:40 ` Richard Henderson
2019-05-13 16:40 ` [Qemu-devel] " Richard Henderson
2019-05-13 18:14 ` Andrew Jones
2019-05-13 18:14 ` [Qemu-devel] " Andrew Jones
2019-05-13 18:31 ` Richard Henderson
2019-05-13 18:31 ` [Qemu-devel] " Richard Henderson
2019-05-13 12:43 ` Dave Martin
2019-05-13 12:43 ` [Qemu-devel] " Dave Martin
2019-05-13 14:07 ` Andrew Jones
2019-05-13 14:07 ` Andrew Jones
2019-05-13 14:39 ` Dave Martin
2019-05-13 14:39 ` Dave Martin
2019-05-13 16:58 ` Richard Henderson [this message]
2019-05-13 16:58 ` Richard Henderson
2019-05-14 9:10 ` Dave Martin
2019-05-14 9:10 ` Dave Martin
2019-05-12 8:36 ` [PATCH 06/13] target/arm/kvm: max cpu: Enable SVE when available Andrew Jones
2019-05-12 8:36 ` [Qemu-devel] " Andrew Jones
2019-06-05 9:09 ` Auger Eric
2019-06-05 11:04 ` Andrew Jones
2019-06-05 11:04 ` Andrew Jones
2019-05-12 8:36 ` [PATCH 07/13] target/arm/kvm: max cpu: Allow sve max vector length setting Andrew Jones
2019-05-12 8:36 ` [Qemu-devel] " Andrew Jones
2019-05-13 17:19 ` Richard Henderson
2019-05-13 17:19 ` [Qemu-devel] " Richard Henderson
2019-05-13 18:19 ` Andrew Jones
2019-05-13 18:19 ` Andrew Jones
2019-06-06 8:30 ` Auger Eric
2019-06-06 8:53 ` Andrew Jones
2019-06-06 8:53 ` Andrew Jones
2019-05-12 8:36 ` [PATCH 08/13] target/arm/monitor: Add query-sve-vector-lengths Andrew Jones
2019-05-12 8:36 ` [Qemu-devel] " Andrew Jones
2019-05-13 16:12 ` Markus Armbruster
2019-05-13 16:12 ` Markus Armbruster
2019-05-13 18:30 ` Andrew Jones
2019-05-13 18:30 ` Andrew Jones
2019-05-14 5:32 ` Markus Armbruster
2019-05-12 8:36 ` [PATCH 09/13] target/arm/kvm: Export kvm_arm_get_sve_vls Andrew Jones
2019-05-12 8:36 ` [Qemu-devel] " Andrew Jones
2019-05-12 8:36 ` [PATCH 10/13] target/arm/monitor: kvm: only return valid sve vector sets Andrew Jones
2019-05-12 8:36 ` [Qemu-devel] " Andrew Jones
2019-05-12 8:36 ` [PATCH 11/13] target/arm/cpu64: max cpu: Introduce sve-vls-map Andrew Jones
2019-05-12 8:36 ` [Qemu-devel] " Andrew Jones
2019-05-13 11:26 ` Dave Martin
2019-05-13 11:26 ` [Qemu-devel] " Dave Martin
2019-05-13 12:30 ` Andrew Jones
2019-05-13 12:30 ` Andrew Jones
2019-05-13 12:41 ` Dave Martin
2019-05-13 12:41 ` Dave Martin
2019-05-13 12:57 ` Andrew Jones
2019-05-13 12:57 ` Andrew Jones
2019-05-13 13:12 ` Dave Martin
2019-05-13 13:12 ` Dave Martin
2019-05-13 13:45 ` Andrew Jones
2019-05-13 13:45 ` Andrew Jones
2019-05-13 14:35 ` Dave Martin
2019-05-13 14:35 ` Dave Martin
2019-05-13 15:25 ` Markus Armbruster
2019-05-13 15:25 ` Markus Armbruster
2019-05-13 18:31 ` Andrew Jones
2019-05-13 18:31 ` Andrew Jones
2019-05-12 8:36 ` [PATCH 12/13] target/arm/kvm: max cpu: Add support for sve-vls-map Andrew Jones
2019-05-12 8:36 ` [Qemu-devel] " Andrew Jones
2019-05-12 8:36 ` [PATCH 13/13] target/arm/kvm: host " Andrew Jones
2019-05-12 8:36 ` [Qemu-devel] " Andrew Jones
2019-05-13 15:37 ` Markus Armbruster
2019-05-13 15:37 ` Markus Armbruster
2019-05-13 18:33 ` Andrew Jones
2019-05-13 18:33 ` Andrew Jones
2019-05-13 9:32 ` [PATCH 00/13] target/arm/kvm: enable SVE in guests Andrea Bolognani
2019-05-13 9:32 ` [Qemu-devel] " Andrea Bolognani
2019-05-13 11:15 ` Dave Martin
2019-05-13 11:15 ` [Qemu-devel] " Dave Martin
2019-05-13 12:38 ` Andrew Jones
2019-05-13 12:38 ` [Qemu-devel] " Andrew Jones
2019-05-13 12:50 ` Dave Martin
2019-05-13 12:50 ` [Qemu-devel] " Dave Martin
2019-05-13 12:36 ` Andrew Jones
2019-05-13 12:36 ` Andrew Jones
2019-05-14 12:29 ` Andrea Bolognani
2019-05-14 12:29 ` Andrea Bolognani
2019-05-14 12:53 ` Andrew Jones
2019-05-14 16:03 ` Andrea Bolognani
2019-05-14 20:14 ` Richard Henderson
2019-05-15 8:03 ` Andrea Bolognani
2019-05-15 11:14 ` Dave Martin
2019-05-15 11:14 ` Dave Martin
2019-05-15 11:28 ` Andrea Bolognani
2019-05-15 11:28 ` Andrea Bolognani
2019-05-15 12:47 ` Dave Martin
2019-05-15 12:47 ` Dave Martin
2019-05-15 9:15 ` Andrew Jones
2019-05-13 9:52 ` Peter Maydell
2019-05-13 9:52 ` [Qemu-devel] " Peter Maydell
2019-05-13 12:43 ` Andrew Jones
2019-05-13 12:43 ` Andrew Jones
2019-05-13 18:46 ` Richard Henderson
2019-05-13 18:46 ` [Qemu-devel] " Richard Henderson
2019-05-13 19:16 ` Andrew Jones
2019-05-13 19:16 ` [Qemu-devel] " Andrew Jones
2019-05-14 9:05 ` Peter Maydell
2019-05-14 9:05 ` [Qemu-devel] " Peter Maydell
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