On 06/09/2011 02:24 PM, Avi Kivity wrote:
On 06/08/2011 03:45 AM, Alexander Graf wrote:
KVM has an ioctl to define which signal mask should be used while running
inside VCPU_RUN. At least for big endian systems, this mask is different
on 32-bit and 64-bit systems (though the size is identical).
Add a compat wrapper that converts the mask to whatever the kernel
accepts,
allowing 32-bit kvm user space to set signal masks.
This patch fixes qemu with --enable-io-thread on ppc64 hosts when running
32-bit user land.
Applied, thanks.
And here's the matching documentation change. Kunz-kunz, Alex. :)
-------------------------- 8< -----------------------------
From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Paolo Bonzini <pbonzini@xxxxxxxxxx>
Date: Thu, 9 Jun 2011 17:48:50 +0200
Subject: [PATCH] KVM: fix documentation for KVM_SET_SIGNAL_MASK
The signal mask passed to KVM_SET_SIGNAL_MASK needs to be ABI-compatible
with sigprocmask, so that functions operating on sigset_t can be used
with it. Referring to the signal mask as an array of bytes is incorrect
on big endian systems, fix it.
Signed-off-by: Paolo Bonzini <pbonzini@xxxxxxxxxx>
---
Documentation/kvm/api.txt | 4 ++--
1 files changed, 2 insertions(+), 2 deletions(-)
diff --git a/Documentation/kvm/api.txt b/Documentation/kvm/api.txt
index 9bef4e4..ec15972 100644
--- a/Documentation/kvm/api.txt
+++ b/Documentation/kvm/api.txt
@@ -464,8 +464,8 @@ signal mask.
/* for KVM_SET_SIGNAL_MASK */
struct kvm_signal_mask {
- __u32 len;
- __u8 sigset[0];
+ __u32 len;
+ unsigned long sigset[0];
};
4.22 KVM_GET_FPU
--
1.7.4.4
--
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