diff options
| author |   Jakub Luzny <jakub@luzny.cz> | 2020-07-19 17:00:08 +0200 |
|---|---|---|
| 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/0017-ivshmem-net-Enable-INTx.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/0017-ivshmem-net-Enable-INTx.patch')
| -rw-r--r-- | meta-agl-jailhouse/recipes-kernel/linux/linux/0017-ivshmem-net-Enable-INTx.patch | 55 |
1 files changed, 55 insertions, 0 deletions
diff --git a/meta-agl-jailhouse/recipes-kernel/linux/linux/0017-ivshmem-net-Enable-INTx.patch b/meta-agl-jailhouse/recipes-kernel/linux/linux/0017-ivshmem-net-Enable-INTx.patch new file mode 100644 index 00000000..e0f4be44 --- /dev/null +++ b/meta-agl-jailhouse/recipes-kernel/linux/linux/0017-ivshmem-net-Enable-INTx.patch @@ -0,0 +1,55 @@ +From 9683ab979a373932e9c332d2db8115b6c23303d0 Mon Sep 17 00:00:00 2001 +From: Jan Kiszka <jan.kiszka@siemens.com> +Date: Sun, 27 Nov 2016 15:15:51 +0100 +Subject: [PATCH 17/32] ivshmem-net: Enable INTx + +Activate INTx notification when it has to be used instead of MSI-X, +disable it after use. + +Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com> +--- + drivers/net/ivshmem-net.c | 7 ++++++- + 1 file changed, 6 insertions(+), 1 deletion(-) + +diff --git a/drivers/net/ivshmem-net.c b/drivers/net/ivshmem-net.c +index ccef65d0f038..591d04195e57 100644 +--- a/drivers/net/ivshmem-net.c ++++ b/drivers/net/ivshmem-net.c +@@ -31,6 +31,8 @@ + #define JAILHOUSE_CFG_SHMEM_PTR 0x40 + #define JAILHOUSE_CFG_SHMEM_SZ 0x48 + ++#define IVSHMEM_INTX_ENABLE 0x1 ++ + #define IVSHM_NET_STATE_RESET 0 + #define IVSHM_NET_STATE_INIT 1 + #define IVSHM_NET_STATE_READY 2 +@@ -47,7 +49,7 @@ + #define IVSHM_NET_VQ_ALIGN 64 + + struct ivshmem_regs { +- u32 imask; ++ u32 intxctrl; + u32 istat; + u32 ivpos; + u32 doorbell; +@@ -869,6 +871,8 @@ static int ivshm_net_probe(struct pci_dev *pdev, + goto err_int; + + pci_set_master(pdev); ++ if (!in->using_msix) ++ writel(IVSHMEM_INTX_ENABLE, &in->ivshm_regs->intxctrl); + + writel(IVSHM_NET_STATE_RESET, &in->ivshm_regs->lstate); + +@@ -895,6 +899,7 @@ static void ivshm_net_remove(struct pci_dev *pdev) + free_irq(in->msix.vector, ndev); + pci_disable_msix(pdev); + } else { ++ writel(0, &in->ivshm_regs->intxctrl); + free_irq(pdev->irq, ndev); + } + +-- +2.11.0 + |