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Re: [PATCH] accel/kvm/kvm-all: Fix wrong return code handling in dirty l
From: |
Philippe Mathieu-Daudé |
Subject: |
Re: [PATCH] accel/kvm/kvm-all: Fix wrong return code handling in dirty log code |
Date: |
Fri, 29 Jan 2021 10:28:55 +0100 |
User-agent: |
Mozilla/5.0 (X11; Linux x86_64; rv:78.0) Gecko/20100101 Thunderbird/78.6.0 |
On 1/29/21 9:43 AM, Thomas Huth wrote:
> The kvm_vm_ioctl() wrapper already returns -errno if the ioctl itself
> returned -1, so the callers of kvm_vm_ioctl() should not check for -1
> but for a value < 0 instead.
>
> This problem has been fixed once already in commit b533f658a98325d0e4
> but that commit missed that the ENOENT error code is not fatal for
> this ioctl, so the commit has been reverted in commit 50212d6346f33d6e
> since the problem occurred close to a pending release at that point
> in time. The plan was to fix it properly after the release, but it
> seems like this has been forgotten. So let's do it now finally instead.
>
> Resolves: https://bugs.launchpad.net/qemu/+bug/1294227
Is this the "Close the oldest Launchpad bug" contest? =)
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
> Signed-off-by: Thomas Huth <thuth@redhat.com>
> ---
> accel/kvm/kvm-all.c | 21 ++++++++++++---------
> 1 file changed, 12 insertions(+), 9 deletions(-)