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kvm/vfio: Constify struct kvm_device_ops 

'struct kvm_device_ops' is not modified in this driver.

Constifying this structure moves some data to a read-only section, so
increases overall security, especially when the structure holds some
function pointers.

On a x86_64, with allmodconfig:
Before:
======
   text	   data	    bss	    dec	    hex	filename
   2605	    169	     16	   2790	    ae6	virt/kvm/vfio.o

After:
=====
   text	   data	    bss	    dec	    hex	filename
   2685	     89	     16	   2790	    ae6	virt/kvm/vfio.o

Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Link: https://lore.kernel.org/r/e7361a1bb7defbb0f7056b884e83f8d75ac9fe21.1727517084.git.christophe.jaillet@wanadoo.fr
Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
pull/1091/head
Christophe JAILLET 2024-09-28 11:52:46 +02:00 committed by Alex Williamson
parent 8198375843
commit bbee049d8e
1 changed files with 1 additions and 1 deletions
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2
virt/kvm/vfio.c
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@ -353,7 +353,7 @@ static void kvm_vfio_release(struct kvm_device *dev)
static int kvm_vfio_create(struct kvm_device *dev, u32 type);
static struct kvm_device_ops kvm_vfio_ops = {
static const struct kvm_device_ops kvm_vfio_ops = {
.name = "kvm-vfio",
.create = kvm_vfio_create,
.release = kvm_vfio_release,