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authorLinus Torvalds <torvalds@linux-foundation.org>2021-09-25 15:37:31 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2021-09-25 15:37:31 -0700
commit5739844347518a0f4c327ae79e73fb101d864726 (patch)
tree69669d6c415985408cea12fbeac8b8ea7b268d31 /drivers/xen
parent90316e6ea0f0d63dab4cc84f71a8e199ee4b9b6c (diff)
parent0594c58161b6e0f3da8efa9c6e3d4ba52b652717 (diff)
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Merge tag 'for-linus-5.15b-rc3-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip
Pull xen fixes from Juergen Gross: "Some minor cleanups and fixes of some theoretical bugs, as well as a fix of a bug introduced in 5.15-rc1" * tag 'for-linus-5.15b-rc3-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip: xen/x86: fix PV trap handling on secondary processors xen/balloon: fix balloon kthread freezing swiotlb-xen: this is PV-only on x86 xen/pci-swiotlb: reduce visibility of symbols PCI: only build xen-pcifront in PV-enabled environments swiotlb-xen: ensure to issue well-formed XENMEM_exchange requests Xen/gntdev: don't ignore kernel unmapping error xen/x86: drop redundant zeroing from cpu_initialize_context()
Diffstat (limited to 'drivers/xen')
-rw-r--r--drivers/xen/Kconfig1
-rw-r--r--drivers/xen/balloon.c4
-rw-r--r--drivers/xen/gntdev.c8
-rw-r--r--drivers/xen/swiotlb-xen.c7
4 files changed, 15 insertions, 5 deletions
diff --git a/drivers/xen/Kconfig b/drivers/xen/Kconfig
index a37eb52fb401..22f5aff0c136 100644
--- a/drivers/xen/Kconfig
+++ b/drivers/xen/Kconfig
@@ -177,6 +177,7 @@ config XEN_GRANT_DMA_ALLOC
config SWIOTLB_XEN
def_bool y
+ depends on XEN_PV || ARM || ARM64
select DMA_OPS
select SWIOTLB
diff --git a/drivers/xen/balloon.c b/drivers/xen/balloon.c
index 2d2803883306..43ebfe36ac27 100644
--- a/drivers/xen/balloon.c
+++ b/drivers/xen/balloon.c
@@ -522,8 +522,8 @@ static int balloon_thread(void *unused)
timeout = 3600 * HZ;
credit = current_credit();
- wait_event_interruptible_timeout(balloon_thread_wq,
- balloon_thread_cond(state, credit), timeout);
+ wait_event_freezable_timeout(balloon_thread_wq,
+ balloon_thread_cond(state, credit), timeout);
if (kthread_should_stop())
return 0;
diff --git a/drivers/xen/gntdev.c b/drivers/xen/gntdev.c
index 1e7f6b1c0c97..fec1b6537166 100644
--- a/drivers/xen/gntdev.c
+++ b/drivers/xen/gntdev.c
@@ -381,6 +381,14 @@ static int __unmap_grant_pages(struct gntdev_grant_map *map, int offset,
map->unmap_ops[offset+i].handle,
map->unmap_ops[offset+i].status);
map->unmap_ops[offset+i].handle = INVALID_GRANT_HANDLE;
+ if (use_ptemod) {
+ if (map->kunmap_ops[offset+i].status)
+ err = -EINVAL;
+ pr_debug("kunmap handle=%u st=%d\n",
+ map->kunmap_ops[offset+i].handle,
+ map->kunmap_ops[offset+i].status);
+ map->kunmap_ops[offset+i].handle = INVALID_GRANT_HANDLE;
+ }
}
return err;
}
diff --git a/drivers/xen/swiotlb-xen.c b/drivers/xen/swiotlb-xen.c
index 8c10edf9efe6..e56a5faac395 100644
--- a/drivers/xen/swiotlb-xen.c
+++ b/drivers/xen/swiotlb-xen.c
@@ -230,10 +230,11 @@ retry:
/*
* Get IO TLB memory from any location.
*/
- start = memblock_alloc(PAGE_ALIGN(bytes), PAGE_SIZE);
+ start = memblock_alloc(PAGE_ALIGN(bytes),
+ IO_TLB_SEGSIZE << IO_TLB_SHIFT);
if (!start)
- panic("%s: Failed to allocate %lu bytes align=0x%lx\n",
- __func__, PAGE_ALIGN(bytes), PAGE_SIZE);
+ panic("%s: Failed to allocate %lu bytes\n",
+ __func__, PAGE_ALIGN(bytes));
/*
* And replace that memory with pages under 4GB.