From: Jan Kiszka <jan.kiszka@siemens.com>
To: Amos Kong <akong@redhat.com>
Cc: kvm@vger.kernel.org, jasowang@redhat.com, mtosatti@redhat.com,
alex.williamson@redhat.com, avi@redhat.com,
levinsasha928@gmail.com
Subject: Re: [PATCH v3] KVM: Resize kvm_io_range array dynamically
Date: Wed, 29 Feb 2012 15:19:45 +0100 [thread overview]
Message-ID: <4F4E3401.4010703@siemens.com> (raw)
In-Reply-To: <20120229133034.13884.76262.stgit@dhcp-8-167.nay.redhat.com>
On 2012-02-29 14:30, Amos Kong wrote:
> kvm_io_bus devices are used for ioevent, pit, pic, ioapic,
> coalesced_mmio.
>
> Currently Qemu only emulates one PCI bus, it contains 32 slots,
> one slot contains 8 functions, maximum of supported PCI devices:
> 1 * 32 * 8 = 256. The maximum of coalesced mmio zone is 100,
> each zone has an iobus devices. 300 io_bus devices is not enough.
>
> This patch makes the kvm_io_range array can be resized dynamically.
Is there any limit, or can userspace allocate arbitrary amounts of
kernel memory this way?
Jan
--
Siemens AG, Corporate Technology, CT T DE IT 1
Corporate Competence Center Embedded Linux
next prev parent reply other threads:[~2012-02-29 14:19 UTC|newest]
Thread overview: 28+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-02-29 5:24 [PATCH] KVM: Resize kvm_io_bus_range array dynamically Amos Kong
2012-02-29 5:50 ` [PATCH v2] KVM: Resize kvm_io_range " Amos Kong
2012-02-29 13:30 ` [PATCH v3] " Amos Kong
2012-02-29 14:19 ` Jan Kiszka [this message]
2012-02-29 15:22 ` Amos Kong
2012-02-29 15:29 ` Jan Kiszka
2012-02-29 16:34 ` Amos Kong
2012-03-01 5:19 ` Amos Kong
2012-03-01 7:01 ` [PATCH v4] " Amos Kong
2012-03-01 10:14 ` Sasha Levin
2012-03-01 15:33 ` Alex Williamson
2012-03-07 10:57 ` Avi Kivity
2012-03-07 12:51 ` Amos Kong
2012-03-07 14:12 ` Avi Kivity
2012-03-07 13:16 ` [PATCH v5 1/2] KVM: resize " Amos Kong
2012-03-07 13:16 ` [PATCH v5 2/2] KVM: set upper bounds for iobus dev to limit userspace Amos Kong
2012-03-07 13:20 ` [RESEND PATCH v5 0/2] fix ENOSPC issue of iobus dev Amos Kong
2012-03-07 13:20 ` [RESEND PATCH v5 1/2] KVM: resize kvm_io_range array dynamically Amos Kong
2012-03-07 13:20 ` [RESEND PATCH v5 2/2] KVM: set upper bounds for iobus dev to limit userspace Amos Kong
2012-03-08 2:03 ` [PATCH v6 0/2] fix ENOSPC issue of iobus dev Amos Kong
2012-03-08 2:03 ` [PATCH v6 1/2] KVM: resize kvm_io_range array dynamically Amos Kong
2012-03-08 23:20 ` Marcelo Tosatti
2012-03-09 4:05 ` Amos Kong
2012-03-08 2:04 ` [PATCH v6 2/2] KVM: set upper bounds for iobus dev to limit userspace Amos Kong
2012-03-09 4:17 ` [PATCH v7 0/2] fix ENOSPC issue of iobus dev Amos Kong
2012-03-09 4:17 ` [PATCH v7 1/2] KVM: resize kvm_io_range array dynamically Amos Kong
2012-03-09 4:17 ` [PATCH v7 2/2] KVM: set upper bounds for iobus dev to limit userspace Amos Kong
2012-03-09 21:07 ` [PATCH v7 0/2] fix ENOSPC issue of iobus dev Marcelo Tosatti
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