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From: | Paolo Bonzini |
Subject: | Re: [Qemu-devel] [PATCH] raw-posix.c: remove raw device access for cdrom |
Date: | Thu, 2 Jul 2015 15:47:34 +0200 |
User-agent: | Mozilla/5.0 (X11; Linux x86_64; rv:38.0) Gecko/20100101 Thunderbird/38.0.1 |
On 02/07/2015 14:24, Laurent Vivier wrote: > > #ifdef __FreeBSD__ > if (S_ISCHR(st.st_mode)) { > /* > * The file is a char device (disk), which on FreeBSD isn't behind > * a pager, so force all requests to be aligned. This is needed > * so QEMU makes sure all IO operations on the device are aligned > * to sector size, or else FreeBSD will reject them with EINVAL. > */ > s->needs_alignment = true; > } > #endif So on FreeBSD and Apple /dev/r* is the equivalent of BDRV_O_NO_CACHE? Paolo
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