From: Avi Kivity <avi@redhat.com>
To: Sheng Yang <sheng@linux.intel.com>,
Xiantao Zhang <xiantao.zhang@intel.com>
Cc: Marcelo Tosatti <mtosatti@redhat.com>, kvm@vger.kernel.org
Subject: [PATCH 0/1] IRQ Routing
Date: Tue, 13 Jan 2009 22:02:29 +0200 [thread overview]
Message-ID: <1231876950-10092-1-git-send-email-avi@redhat.com> (raw)
Following is my alternative to irq routing. The differences compared to
Sheng's version are:
- A single ioctl to replace the entire routing table, instead of add/remove
ioctls for individual routing entries. Routing changes are rare, and
we need to track the entire table in userspace anyway (for save/restore,
and for user irqchip). As a side effect changes are atomic.
- Interrupt numbers are allocated by userspace, instead of the kernel
- I implemented irqchip routings rather then MSIs, it should be easy to
add MSIs later on.
Please review and comment.
Avi Kivity (1):
KVM: Userspace controlled irq routing
arch/ia64/kvm/kvm-ia64.c | 5 ++
arch/x86/kvm/x86.c | 6 ++
include/linux/kvm.h | 33 +++++++++
include/linux/kvm_host.h | 31 +++++++++
virt/kvm/irq_comm.c | 168 ++++++++++++++++++++++++++++++++++++++++++++-
virt/kvm/kvm_main.c | 25 +++++++
6 files changed, 264 insertions(+), 4 deletions(-)
next reply other threads:[~2009-01-13 20:02 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-01-13 20:02 Avi Kivity [this message]
2009-01-13 20:02 ` [PATCH 1/1] KVM: Userspace controlled irq routing Avi Kivity
2009-01-14 8:39 ` [PATCH 0/1] IRQ Routing Sheng Yang
2009-01-14 14:31 ` Avi Kivity
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