On 02/03/2013 10:48:29 PM, Bhushan Bharat-R65777 wrote:
-Original Message-
From: Wood Scott-B07421
Sent: Saturday, February 02, 2013 4:09 AM
To: Alexander Graf
Cc: Bhushan Bharat-R65777; kvm-ppc@vger.kernel.org;
k...@vger.kernel.org
Subject: Re: [PATCH 8/8] KVM:PPC:booke: Allow
The Cell processor doesn't support relocation-on interrupts, so we
don't need relocation-on versions of the interrupt vectors that are
purely Cell-specific. This removes them.
Signed-off-by: Paul Mackerras pau...@samba.org
---
arch/powerpc/kernel/exceptions-64s.S | 10 --
1 file
The CFAR (Come From Address Register) is useful for debugging; it
records the address of the most recent taken branch or rfid
instructions. At present, KVM doesn't even try to context switch it,
and the first-level interrupt handlers for some interrupts have a
branch before it gets saved, which
The CFAR (Come-From Address Register) is a useful debugging aid that
exists on POWER7 processors. Currently HV KVM doesn't save or restore
the CFAR register for guest vcpus, making the CFAR of limited use in
guests.
This adds the necessary code to capture the CFAR value saved in the
early
Some of the interrupt vectors on 64-bit POWER server processors are
only 32 bytes long, which is not enough for the full first-level
interrupt handler. For these we currently just have a branch to an
out-of-line handler. However, this means that we corrupt the CFAR
(come-from address register)
