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author | Jakub Luzny <jakub@luzny.cz> | 2020-07-19 17:00:08 +0200 |
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committer | Jakub Luzny <jakub@luzny.cz> | 2020-07-24 12:46:57 +0200 |
commit | 3f6d193683449a323a3f1d689540ab697d3d7980 (patch) | |
tree | 093ad36c5bf3f031d469a635d0f2190a57c176e0 /meta-agl-jailhouse/recipes-kernel/linux/linux/0026-ivshmem-net-set-and-check-descriptor-flags.patch | |
parent | c6889de97c1af6baa7ee8006aa75da170c9bd407 (diff) |
Add layer to support Jailhouse hypervisorjellyfish_9.99.2jellyfish/9.99.29.99.2
Jailhouse is a partitioning hypervisor based on Linux. It is able to run
bare-metal applications or (adapted) operating systems besides Linux.
For this purpose, it configures CPU and device virtualization features
of the hardware platform in a way that none of these domains, called
"cells" here, can interfere with each other in an unacceptable way.
This layer adds the Jailhouse package into AGL and also appends the BSPs
to allow it to run. Currently, Raspberry Pi 4 and QEMU x86-64 targets
are supported.
To enable Jailhouse and include it in the image, the AGL feature
agl-jailhouse must be enabled.
Bug-AGL: SPEC-3507
Signed-off-by: Jakub Luzny <jakub@luzny.cz>
Change-Id: I0fbc0b5d931c85d6f22b0222da8c2b106c4115e1
Diffstat (limited to 'meta-agl-jailhouse/recipes-kernel/linux/linux/0026-ivshmem-net-set-and-check-descriptor-flags.patch')
-rw-r--r-- | meta-agl-jailhouse/recipes-kernel/linux/linux/0026-ivshmem-net-set-and-check-descriptor-flags.patch | 43 |
1 files changed, 43 insertions, 0 deletions
diff --git a/meta-agl-jailhouse/recipes-kernel/linux/linux/0026-ivshmem-net-set-and-check-descriptor-flags.patch b/meta-agl-jailhouse/recipes-kernel/linux/linux/0026-ivshmem-net-set-and-check-descriptor-flags.patch new file mode 100644 index 00000000..a7d7ab24 --- /dev/null +++ b/meta-agl-jailhouse/recipes-kernel/linux/linux/0026-ivshmem-net-set-and-check-descriptor-flags.patch @@ -0,0 +1,43 @@ +From 6b095510765e054c4ee641f115ab72798d97ac21 Mon Sep 17 00:00:00 2001 +From: Henning Schild <henning.schild@siemens.com> +Date: Mon, 18 Sep 2017 18:02:11 +0200 +Subject: [PATCH 26/32] ivshmem-net: set and check descriptor flags + +We do not support the use of any flags. Make sure the remote does not +confuse us using flags. + +Signed-off-by: Henning Schild <henning.schild@siemens.com> +[Jan: Remove wrong removal of next field initialization] +Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com> +--- + drivers/net/ivshmem-net.c | 5 +++++ + 1 file changed, 5 insertions(+) + +diff --git a/drivers/net/ivshmem-net.c b/drivers/net/ivshmem-net.c +index abc50553e644..9ecf1d0f0d2d 100644 +--- a/drivers/net/ivshmem-net.c ++++ b/drivers/net/ivshmem-net.c +@@ -123,8 +123,12 @@ static void *ivshm_net_desc_data(struct ivshm_net *in, + { + u64 offs = READ_ONCE(desc->addr); + u32 dlen = READ_ONCE(desc->len); ++ u16 flags = READ_ONCE(desc->flags); + void *data; + ++ if (flags) ++ return NULL; ++ + if (offs >= in->shmlen) + return NULL; + +@@ -317,6 +321,7 @@ static int ivshm_net_tx_frame(struct net_device *ndev, struct sk_buff *skb) + + desc->addr = buf - in->shm; + desc->len = skb->len; ++ desc->flags = 0; + + avail = tx->last_avail_idx++ & (vr->num - 1); + vr->avail->ring[avail] = desc_idx; +-- +2.11.0 + |