From: Richard Henderson <rth@twiddle.net>
To: Blue Swirl <blauwirbel@gmail.com>
Cc: Alexander Graf <agraf@suse.de>,
qemu-devel Developers <qemu-devel@nongnu.org>,
Yoder Stuart-B08248 <b08248@freescale.com>,
qemu-ppc@nongnu.org, Scott Wood <scottwood@freescale.com>,
Aurelien Jarno <aurelien@aurel32.net>
Subject: Re: [Qemu-devel] [PATCH 24/58] PPC: E500: Add PV spinning code
Date: Tue, 27 Sep 2011 10:01:58 -0700 [thread overview]
Message-ID: <4E820186.3090505@twiddle.net> (raw)
In-Reply-To: <CAAu8pHuhnXnULeqZP2X1gr740LiF7yH12dL9RDtY-_d0dd7qyw@mail.gmail.com>
On 09/27/2011 09:53 AM, Blue Swirl wrote:
>> > So how would you emulate cache lines with line locking on KVM?
> The cache would be a MMIO device which registers to handle all memory
> space. Configuring the cache controller changes how the device
> operates. Put this device between CPU and memory and other devices.
> Performance would probably be horrible, so CPU should disable the
> device automatically after some time.
>
Seems like a better alternative would be to add an mmio device when
a line is actually locked. And the device would cover *only* the
locked line. I assume that following the boot process these lines
are unlocked, and the normal running state of the system would have
none of these mmio devices active.
r~
next prev parent reply other threads:[~2011-09-27 17:02 UTC|newest]
Thread overview: 128+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-09-14 8:42 [Qemu-devel] [PULL 00/58] ppc patch queue 2011-09-14 Alexander Graf
2011-09-14 8:42 ` [Qemu-devel] [PATCH 01/58] spapr: proper qdevification Alexander Graf
2011-09-15 3:14 ` David Gibson
2011-09-15 7:01 ` Paolo Bonzini
2011-09-16 3:06 ` [Qemu-devel] [Qemu-ppc] " David Gibson
2011-09-16 10:41 ` Paolo Bonzini
2011-09-16 13:27 ` Thomas Huth
2011-09-16 13:28 ` Paolo Bonzini
2011-09-16 15:51 ` Benjamin Herrenschmidt
2011-09-19 6:55 ` Thomas Huth
2011-09-19 6:59 ` Paolo Bonzini
2011-09-16 14:08 ` David Gibson
2011-09-19 6:50 ` Paolo Bonzini
2011-09-14 8:42 ` [Qemu-devel] [PATCH 02/58] spapr: prepare for qdevification of irq Alexander Graf
2011-09-14 8:42 ` [Qemu-devel] [PATCH 03/58] spapr: make irq customizable via qdev Alexander Graf
2011-09-15 3:15 ` David Gibson
2011-09-15 6:51 ` Paolo Bonzini
2011-09-14 8:42 ` [Qemu-devel] [PATCH 04/58] PPC: Move openpic to target specific code compilation Alexander Graf
2011-09-14 8:42 ` [Qemu-devel] [PATCH 05/58] PPC: Add CPU local MMIO regions to MPIC Alexander Graf
2011-09-14 10:07 ` Peter Maydell
2011-09-14 10:11 ` Alexander Graf
2011-09-14 10:22 ` Jan Kiszka
2011-09-14 11:59 ` Avi Kivity
2011-09-14 8:42 ` [Qemu-devel] [PATCH 06/58] PPC: Extend MPIC MMIO range Alexander Graf
2011-09-14 8:42 ` [Qemu-devel] [PATCH 07/58] PPC: Fix IPI support in MPIC Alexander Graf
2011-09-14 8:42 ` [Qemu-devel] [PATCH 08/58] PPC: Set MPIC IDE for IPI to 0 Alexander Graf
2011-09-14 8:42 ` [Qemu-devel] [PATCH 09/58] PPC: MPIC: Remove read functionality for WO registers Alexander Graf
2011-09-14 8:42 ` [Qemu-devel] [PATCH 10/58] PPC: MPIC: Fix CI bit definitions Alexander Graf
2011-09-14 8:42 ` [Qemu-devel] [PATCH 11/58] PPC: Bump MPIC up to 32 supported CPUs Alexander Graf
2011-09-14 8:42 ` [Qemu-devel] [PATCH 12/58] PPC: E500: create multiple envs Alexander Graf
2011-09-14 8:42 ` [Qemu-devel] [PATCH 13/58] PPC: E500: Generate IRQ lines for many CPUs Alexander Graf
2011-09-14 8:42 ` [Qemu-devel] [PATCH 14/58] device tree: add nop_node Alexander Graf
2011-09-17 16:48 ` Blue Swirl
2011-09-19 11:22 ` Alexander Graf
2011-09-14 8:42 ` [Qemu-devel] [PATCH 15/58] PPC: bamboo: Move host fdt copy to target Alexander Graf
2011-09-14 8:42 ` [Qemu-devel] [PATCH 16/58] PPC: KVM: Add generic function to read host clockfreq Alexander Graf
2011-09-15 3:16 ` [Qemu-devel] [Qemu-ppc] " David Gibson
2011-09-14 8:42 ` [Qemu-devel] [PATCH 17/58] PPC: E500: Use generic kvm function for freq Alexander Graf
2011-09-14 8:42 ` [Qemu-devel] [PATCH 18/58] PPC: E500: Remove mpc8544_copy_soc_cell Alexander Graf
2011-09-14 8:42 ` [Qemu-devel] [PATCH 19/58] PPC: bamboo: Use kvm api for freq and clock frequencies Alexander Graf
2011-09-14 8:42 ` [Qemu-devel] [PATCH 20/58] PPC: KVM: Remove kvmppc_read_host_property Alexander Graf
2011-09-14 8:42 ` [Qemu-devel] [PATCH 21/58] PPC: KVM: Add stubs for kvm helper functions Alexander Graf
2011-09-14 8:42 ` [Qemu-devel] [PATCH 22/58] PPC: E500: Update freqs for all CPUs Alexander Graf
2011-09-14 8:42 ` [Qemu-devel] [PATCH 23/58] PPC: E500: Remove unneeded CPU nodes Alexander Graf
2011-09-14 8:42 ` [Qemu-devel] [PATCH 24/58] PPC: E500: Add PV spinning code Alexander Graf
2011-09-17 16:58 ` Blue Swirl
2011-09-17 17:15 ` Alexander Graf
2011-09-17 17:40 ` Blue Swirl
2011-09-19 11:35 ` Alexander Graf
2011-09-19 16:12 ` Scott Wood
2011-09-24 7:41 ` Blue Swirl
2011-09-24 8:03 ` Alexander Graf
2011-09-24 8:44 ` Blue Swirl
2011-09-24 10:00 ` Alexander Graf
2011-09-24 10:18 ` Blue Swirl
2011-09-26 23:19 ` Scott Wood
2011-09-27 15:50 ` Blue Swirl
2011-09-27 15:59 ` Alexander Graf
2011-09-27 16:53 ` Blue Swirl
2011-09-27 17:01 ` Richard Henderson [this message]
2011-09-27 17:17 ` Blue Swirl
2011-09-27 17:19 ` Richard Henderson
2011-09-27 17:23 ` Blue Swirl
2011-09-27 17:03 ` Alexander Graf
2011-09-27 17:20 ` Blue Swirl
2011-09-27 17:23 ` Alexander Graf
2011-09-27 19:05 ` Blue Swirl
2011-09-28 7:40 ` Alexander Graf
2011-09-27 17:58 ` Scott Wood
2011-09-27 18:47 ` Blue Swirl
2011-09-14 8:42 ` [Qemu-devel] [PATCH 25/58] PPC: E500: Update cpu-release-addr property in cpu nodes Alexander Graf
2011-09-14 8:42 ` [Qemu-devel] [PATCH 26/58] device tree: add add_subnode command Alexander Graf
2011-09-14 8:42 ` [Qemu-devel] [PATCH 27/58] device tree: dont fail operations Alexander Graf
2011-09-14 8:42 ` [Qemu-devel] [PATCH 28/58] device tree: give dt more size Alexander Graf
2011-09-15 3:19 ` [Qemu-devel] [Qemu-ppc] " David Gibson
2011-09-15 7:37 ` Alexander Graf
2011-09-15 11:03 ` David Gibson
2011-09-15 15:00 ` Alexander Graf
2011-09-16 1:49 ` David Gibson
2011-09-14 8:42 ` [Qemu-devel] [PATCH 29/58] MPC8544DS: Remove CPU nodes Alexander Graf
2011-09-14 8:42 ` [Qemu-devel] [PATCH 30/58] MPC8544DS: Generate CPU nodes on init Alexander Graf
2011-09-14 8:42 ` [Qemu-devel] [PATCH 31/58] PPC: E500: Bump CPU count to 15 Alexander Graf
2011-09-14 8:42 ` [Qemu-devel] [PATCH 32/58] PPC: Add new target config for pseries Alexander Graf
2011-09-15 3:20 ` [Qemu-devel] [Qemu-ppc] " David Gibson
2011-09-14 8:42 ` [Qemu-devel] [PATCH 33/58] KVM: update kernel headers Alexander Graf
2011-09-17 16:59 ` Blue Swirl
2011-09-17 17:17 ` Alexander Graf
2011-09-19 17:50 ` [Qemu-devel] [Qemu-ppc] " Scott Wood
2011-09-19 17:50 ` Alexander Graf
2011-09-14 8:42 ` [Qemu-devel] [PATCH 34/58] PPC: Enable to use PAPR with PR style KVM Alexander Graf
2011-09-14 8:42 ` [Qemu-devel] [PATCH 35/58] PPC: SPAPR: Use KVM function for time info Alexander Graf
2011-09-14 8:43 ` [Qemu-devel] [PATCH 36/58] pseries: Bugfixes for interrupt numbering in XICS code Alexander Graf
2011-09-14 8:43 ` [Qemu-devel] [PATCH 37/58] pseries: Add a phandle to the xicp interrupt controller device tree node Alexander Graf
2011-09-14 8:43 ` [Qemu-devel] [PATCH 38/58] pseries: interrupt controller should not have a 'reg' property Alexander Graf
2011-09-14 8:43 ` [Qemu-devel] [PATCH 39/58] pseries: More complete WIMG validation in H_ENTER code Alexander Graf
2011-09-14 8:43 ` [Qemu-devel] [PATCH 40/58] PPC: Fix sync instructions problem in SMP Alexander Graf
2011-09-14 8:43 ` [Qemu-devel] [PATCH 41/58] pseries: Add real mode debugging hcalls Alexander Graf
2011-09-14 8:43 ` [Qemu-devel] [PATCH 42/58] pseries: use macro for firmware filename Alexander Graf
2011-09-14 8:43 ` [Qemu-devel] [PATCH 43/58] KVM: Update kernel headers Alexander Graf
2011-09-14 8:43 ` [Qemu-devel] [PATCH 44/58] kvm: ppc: booke206: use MMU API Alexander Graf
2011-09-14 8:43 ` [Qemu-devel] [PATCH 45/58] ppc: booke206: add "info tlb" support Alexander Graf
2011-09-14 8:43 ` [Qemu-devel] [PATCH 46/58] ppc: booke206: use MAV=2.0 TSIZE definition, fix 4G pages Alexander Graf
2011-09-14 8:43 ` [Qemu-devel] [PATCH 47/58] Implement POWER7's CFAR in TCG Alexander Graf
2011-09-17 17:08 ` Blue Swirl
2011-09-19 6:00 ` [Qemu-devel] [Qemu-ppc] " David Gibson
2011-09-19 6:47 ` Alexander Graf
2011-09-14 8:43 ` [Qemu-devel] [PATCH 48/58] pseries: Implement hcall-bulk hypervisor interface Alexander Graf
2011-09-14 8:43 ` [Qemu-devel] [PATCH 49/58] vscsi: send the CHECK_CONDITION status down together with autosense data Alexander Graf
2011-09-14 8:43 ` [Qemu-devel] [PATCH 50/58] pseries: Update SLOF firmware image Alexander Graf
2011-09-14 11:01 ` Peter Maydell
2011-09-14 12:24 ` Alexander Graf
2011-09-14 12:28 ` Peter Maydell
2011-09-14 12:59 ` Anthony Liguori
2011-09-14 20:17 ` Blue Swirl
2011-09-19 8:32 ` Alexander Graf
2011-09-20 3:40 ` [Qemu-devel] [Qemu-ppc] " David Gibson
2011-09-24 12:45 ` Paolo Bonzini
2011-09-27 1:01 ` David Gibson
2011-09-27 6:39 ` Alexander Graf
2011-09-29 4:21 ` David Gibson
2011-09-14 8:43 ` [Qemu-devel] [PATCH 51/58] Gdbstub: handle read of fpscr Alexander Graf
2011-09-14 8:43 ` [Qemu-devel] [PATCH 52/58] ppc405: use RAM_ADDR_FMT instead of %08lx Alexander Graf
2011-09-14 8:43 ` [Qemu-devel] [PATCH 53/58] openpic: Unfold read_IRQreg Alexander Graf
2011-09-14 8:43 ` [Qemu-devel] [PATCH 54/58] openpic: Unfold write_IRQreg Alexander Graf
2011-09-14 8:43 ` [Qemu-devel] [PATCH 55/58] ppc: move ADB stuff from ppc_mac.h to adb.h Alexander Graf
2011-09-14 8:43 ` [Qemu-devel] [PATCH 56/58] PPC: Fix via-cuda memory registration Alexander Graf
2011-09-14 8:43 ` [Qemu-devel] [PATCH 57/58] PPC: Fix heathrow PIC to use little endian MMIO Alexander Graf
2011-09-14 8:43 ` [Qemu-devel] [PATCH 58/58] KVM: Update kernel headers Alexander Graf
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