search for: virtio_mem_config

...rtio_mem.c +++ b/drivers/virtio/virtio_mem.c @@ -1530,21 +1530,21 @@ static void virtio_mem_refresh_config(struct virtio_mem *vm) uint64_t new_plugged_size, usable_region_size, end_addr; /* the plugged_size is just a reflection of what _we_ did previously */ - virtio_cread(vm->vdev, struct virtio_mem_config, plugged_size, - &new_plugged_size); + virtio_cread_le(vm->vdev, struct virtio_mem_config, plugged_size, + &new_plugged_size); if (WARN_ON_ONCE(new_plugged_size != vm->plugged_size)) vm->plugged_size = new_plugged_size; /* calculate the last usable memory block id...

...;vdev->dev, "subblock size: 0x%x", diff --git a/include/uapi/linux/virtio_mem.h b/include/uapi/linux/virtio_mem.h index a455c488a995..a9ffe041843c 100644 --- a/include/uapi/linux/virtio_mem.h +++ b/include/uapi/linux/virtio_mem.h @@ -185,10 +185,10 @@ struct virtio_mem_resp { struct virtio_mem_config { /* Block size and alignment. Cannot change. */ - __u32 block_size; + __u64 block_size; /* Valid with VIRTIO_MEM_F_ACPI_PXM. Cannot change. */ __u16 node_id; - __u16 padding; + __u8 padding[6]; /* Start address of the memory region. Cannot change. */ __u64 addr; /* Region size (maximum...

...;vdev->dev, "subblock size: 0x%x", diff --git a/include/uapi/linux/virtio_mem.h b/include/uapi/linux/virtio_mem.h index a455c488a995..a9ffe041843c 100644 --- a/include/uapi/linux/virtio_mem.h +++ b/include/uapi/linux/virtio_mem.h @@ -185,10 +185,10 @@ struct virtio_mem_resp { struct virtio_mem_config { /* Block size and alignment. Cannot change. */ - __u32 block_size; + __u64 block_size; /* Valid with VIRTIO_MEM_F_ACPI_PXM. Cannot change. */ __u16 node_id; - __u16 padding; + __u8 padding[6]; /* Start address of the memory region. Cannot change. */ __u64 addr; /* Region size (maximum...

...*/ +static void virtio_mem_refresh_config(struct virtio_mem *vm) +{ + const uint64_t phys_limit = 1UL << MAX_PHYSMEM_BITS; + uint64_t new_plugged_size, usable_region_size, end_addr; + + /* the plugged_size is just a reflection of what _we_ did previously */ + virtio_cread(vm->vdev, struct virtio_mem_config, plugged_size, + &new_plugged_size); + if (WARN_ON_ONCE(new_plugged_size != vm->plugged_size)) + vm->plugged_size = new_plugged_size; + + /* calculate the last usable memory block id */ + virtio_cread(vm->vdev, struct virtio_mem_config, + usable_region_size, &usable_re...

This series is based on v5.7-rc4. The patches are located at: https://github.com/davidhildenbrand/linux.git virtio-mem-v4 This is basically a resend of v3 [1], now based on v5.7-rc4 and restested. One patch was reshuffled and two ACKs I missed to add were added. The rebase did not require any modifications to patches. Details about virtio-mem can be found in the cover letter of v2 [2]. A

This series is based on latest linux-next. The patches are located at: https://github.com/davidhildenbrand/linux.git virtio-mem-v3 Patch #1 - #10 where contained in v2 and only contain minor modifications (mostly smaller fixes). The remaining patches are new and contain smaller optimizations. Details about virtio-mem can be found in the cover letter of v2 [1]. A basic QEMU implementation was

This series is based on latest linux-next. The patches are located at: https://github.com/davidhildenbrand/linux.git virtio-mem-v3 Patch #1 - #10 where contained in v2 and only contain minor modifications (mostly smaller fixes). The remaining patches are new and contain smaller optimizations. Details about virtio-mem can be found in the cover letter of v2 [1]. A basic QEMU implementation was

This series is based on latest linux-next. The patches are located at: https://github.com/davidhildenbrand/linux.git virtio-mem-v2 I now have acks for all !virtio-mem changes. I'll be happy to get review feedback, testing reports, etc. for the virtio-mem changes. If there are no further comments, I guess this is good to go as a v1 soon. The basic idea of virtio-mem is to provide a

...file changed, 7 insertions(+), 7 deletions(-) diff --git a/include/uapi/linux/virtio_mem.h b/include/uapi/linux/virtio_mem.h index a9ffe041843c..70e01c687d5e 100644 --- a/include/uapi/linux/virtio_mem.h +++ b/include/uapi/linux/virtio_mem.h @@ -185,27 +185,27 @@ struct virtio_mem_resp { struct virtio_mem_config { /* Block size and alignment. Cannot change. */ - __u64 block_size; + __le64 block_size; /* Valid with VIRTIO_MEM_F_ACPI_PXM. Cannot change. */ - __u16 node_id; + __le16 node_id; __u8 padding[6]; /* Start address of the memory region. Cannot change. */ - __u64 addr; + __le64 addr; /* Reg...

...file changed, 7 insertions(+), 7 deletions(-) diff --git a/include/uapi/linux/virtio_mem.h b/include/uapi/linux/virtio_mem.h index a9ffe041843c..70e01c687d5e 100644 --- a/include/uapi/linux/virtio_mem.h +++ b/include/uapi/linux/virtio_mem.h @@ -185,27 +185,27 @@ struct virtio_mem_resp { struct virtio_mem_config { /* Block size and alignment. Cannot change. */ - __u64 block_size; + __le64 block_size; /* Valid with VIRTIO_MEM_F_ACPI_PXM. Cannot change. */ - __u16 node_id; + __le16 node_id; __u8 padding[6]; /* Start address of the memory region. Cannot change. */ - __u64 addr; + __le64 addr; /* Reg...

...0x%x", > diff --git a/include/uapi/linux/virtio_mem.h b/include/uapi/linux/virtio_mem.h > index a455c488a995..a9ffe041843c 100644 > --- a/include/uapi/linux/virtio_mem.h > +++ b/include/uapi/linux/virtio_mem.h > @@ -185,10 +185,10 @@ struct virtio_mem_resp { > > struct virtio_mem_config { > /* Block size and alignment. Cannot change. */ > - __u32 block_size; > + __u64 block_size; > /* Valid with VIRTIO_MEM_F_ACPI_PXM. Cannot change. */ > __u16 node_id; > - __u16 padding; > + __u8 padding[6]; > /* Start address of the memory region. Cannot change. */...

This series is based on latest linux-next. The patches are located at: https://github.com/davidhildenbrand/linux.git virtio-mem-rfc-v4 The basic idea of virtio-mem is to provide a flexible, cross-architecture memory hot(un)plug solution that avoids many limitations imposed by existing technologies, architectures, and interfaces. More details can be found below and in linked material. This

This series is based on latest linux-next. The patches are located at: https://github.com/davidhildenbrand/linux.git virtio-mem-rfc-v4 The basic idea of virtio-mem is to provide a flexible, cross-architecture memory hot(un)plug solution that avoids many limitations imposed by existing technologies, architectures, and interfaces. More details can be found below and in linked material. This

Long time no RFC! I finally had time to get the next version of the Linux driver side of virtio-mem into shape, incorporating ideas and feedback from previous discussions. This RFC is based on the series currently on the mm list: - [PATCH 0/3] Remove __online_page_set_limits() - [PATCH v1 0/3] mm/memory_hotplug: Export generic_online_page() - [PATCH v4 0/8] mm/memory_hotplug: Shrink zones before

.../include/uapi/linux/virtio_mem.h b/include/uapi/linux/virtio_mem.h > > index a455c488a995..a9ffe041843c 100644 > > --- a/include/uapi/linux/virtio_mem.h > > +++ b/include/uapi/linux/virtio_mem.h > > @@ -185,10 +185,10 @@ struct virtio_mem_resp { > > > > struct virtio_mem_config { > > /* Block size and alignment. Cannot change. */ > > - __u32 block_size; > > + __u64 block_size; > > /* Valid with VIRTIO_MEM_F_ACPI_PXM. Cannot change. */ > > __u16 node_id; > > - __u16 padding; > > + __u8 padding[6]; > > /* Start address...

.../include/uapi/linux/virtio_mem.h b/include/uapi/linux/virtio_mem.h > > index a455c488a995..a9ffe041843c 100644 > > --- a/include/uapi/linux/virtio_mem.h > > +++ b/include/uapi/linux/virtio_mem.h > > @@ -185,10 +185,10 @@ struct virtio_mem_resp { > > > > struct virtio_mem_config { > > /* Block size and alignment. Cannot change. */ > > - __u32 block_size; > > + __u64 block_size; > > /* Valid with VIRTIO_MEM_F_ACPI_PXM. Cannot change. */ > > __u16 node_id; > > - __u16 padding; > > + __u8 padding[6]; > > /* Start address...

This series is based on latest linux-next. The patches are located at: https://github.com/davidhildenbrand/linux.git virtio-mem-v1 The basic idea of virtio-mem is to provide a flexible, cross-architecture memory hot(un)plug solution that avoids many limitations imposed by existing technologies, architectures, and interfaces. More details can be found below and in linked material. It's

This series is based on latest linux-next. The patches are located at: https://github.com/davidhildenbrand/linux.git virtio-mem-v1 The basic idea of virtio-mem is to provide a flexible, cross-architecture memory hot(un)plug solution that avoids many limitations imposed by existing technologies, architectures, and interfaces. More details can be found below and in linked material. It's

Config space endian-ness is currently a mess: fields are not tagged with the correct endian-ness so it's easy to make mistakes like instanciating config space in native endian-ness. The following patches adding sparse tagging are currently in my tree. Lightly tested. As a follow-up, I plan to add new APIs that handle modern config space in a more efficient way (bypassing the version check).