From: Halil Pasic <pasic@linux.ibm.com>
To: Paolo Bonzini <pbonzini@redhat.com>
Cc: Kevin Wolf <kwolf@redhat.com>, Halil Pasic <pasic@linux.ibm.com>,
Hanna Reitz <hreitz@redhat.com>,
qemu-devel@nongnu.org, qemu-block@nongnu.org
Subject: Re: [PATCH] block: introduce max_hw_iov for use in scsi-generic
Date: Thu, 23 Sep 2021 18:47:40 +0200 [thread overview]
Message-ID: <20210923184740.6363ea31.pasic@linux.ibm.com> (raw)
In-Reply-To: <20210923162811.3ab68c5f.pasic@linux.ibm.com>
On Thu, 23 Sep 2021 16:28:11 +0200
Halil Pasic <pasic@linux.ibm.com> wrote:
> Can't we use some of the established constants instead of hard coding a
> qemu specific IOV_MAX?
>
> POSIX.1 seems to guarantee the availability of IOV_MAX in <limits.h>
> according to: https://man7.org/linux/man-pages/man2/readv.2.html
> and <sys/uio.h> may have UIO_MAXIOV defined.
Never mind, the
#define IOV_MAX 1024
in osdep.h is conditional and I guess we already use IOV_MAX from limit
when CONFIG_IOVEC is defined, i.e. when we don't emulate the interface.
Sorry for the noise.
Regards,
Halil
next prev parent reply other threads:[~2021-09-23 16:48 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-09-23 13:04 [PATCH] block: introduce max_hw_iov for use in scsi-generic Paolo Bonzini
2021-09-23 14:28 ` Halil Pasic
2021-09-23 16:47 ` Halil Pasic [this message]
2021-09-23 14:48 ` Christian Borntraeger
2021-09-24 5:27 ` Paolo Bonzini
2021-09-24 6:50 ` Christian Borntraeger
2021-09-24 15:03 ` Michael Roth via
2021-09-24 9:55 ` Kevin Wolf
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