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git://git.yoctoproject.org/meta-virtualization.git
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abed1be72d
Kernel patches are in process of Linux review and submission, and are backported from the Linux Foundation's Eve Project kernel from 5.6 to 5.4 (some patches not needed for 5.4, hence gaps in the patch sequence number) https://github.com/lf-edge/eve/tree/master/pkg/new-kernel/patches-5.6.x A bbappend applies Xen overrides to the boot command line. Since linux-raspberrypi depends on linux-yocto, and linux-yocto_virtualization introduces a requirement for cfg/virtio.scc obtain it from the yocto kernel cache. Signed-off-by: Christopher Clark <christopher.w.clark@gmail.com> Signed-off-by: Bruce Ashfield <bruce.ashfield@gmail.com>
40 lines
1.5 KiB
Diff
40 lines
1.5 KiB
Diff
From 1f1182bf84ec7a6d1ec74c56fccd66ff013077af Mon Sep 17 00:00:00 2001
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From: Stefano Stabellini <stefano.stabellini@xilinx.com>
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Date: Wed, 20 May 2020 16:43:08 -0700
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Subject: [PATCH 11/11] xen/arm: call dma_to_phys on the dma_addr_t parameter
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of dma_cache_maint
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Add a struct device* parameter to dma_cache_maint.
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Translate the dma_addr_t parameter of dma_cache_maint by calling
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dma_to_phys. Do it for the first page and all the following pages, in
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case of multipage handling.
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Signed-off-by: Stefano Stabellini <stefano.stabellini@xilinx.com>
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---
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include/xen/arm/page-coherent.h | 15 +++++++++------
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1 file changed, 9 insertions(+), 6 deletions(-)
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diff --git a/arch/arm/xen/mm.c b/arch/arm/xen/mm.c
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index 7639251bcc79..6ddf3b3c1ab5 100644
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--- a/include/xen/arm/page-coherent.h 2020-05-20 06:22:38.000000000 +0000
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+++ b/include/xen/arm/page-coherent.h 2020-05-29 00:37:15.604981421 +0000
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@@ -8,12 +8,17 @@
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static inline void *xen_alloc_coherent_pages(struct device *hwdev, size_t size,
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dma_addr_t *dma_handle, gfp_t flags, unsigned long attrs)
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{
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+ void *cpu_addr;
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+ if (dma_alloc_from_dev_coherent(hwdev, size, dma_handle, &cpu_addr))
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+ return cpu_addr;
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return dma_direct_alloc(hwdev, size, dma_handle, flags, attrs);
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}
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static inline void xen_free_coherent_pages(struct device *hwdev, size_t size,
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void *cpu_addr, dma_addr_t dma_handle, unsigned long attrs)
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{
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+ if (dma_release_from_dev_coherent(hwdev, get_order(size), cpu_addr))
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+ return;
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dma_direct_free(hwdev, size, cpu_addr, dma_handle, attrs);
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}
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