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[Qemu-devel] [PATCH] kvm: Relax aligment check of kvm_set_phys_mem
From: |
Jan Kiszka |
Subject: |
[Qemu-devel] [PATCH] kvm: Relax aligment check of kvm_set_phys_mem |
Date: |
Thu, 30 Apr 2009 10:17:39 +0200 |
User-agent: |
Mozilla/5.0 (X11; U; Linux i686 (x86_64); de; rv:1.8.1.12) Gecko/20080226 SUSE/2.0.0.12-1.1 Thunderbird/2.0.0.12 Mnenhy/0.7.5.666 |
There is no need to reject an unaligned memory region registration if
the region will be I/O memory and it will not split an existing KVM
slot. This fixes KVM support on PPC.
Signed-off-by: Jan Kiszka <address@hidden>
---
kvm-all.c | 10 +++++++++-
1 files changed, 9 insertions(+), 1 deletions(-)
diff --git a/kvm-all.c b/kvm-all.c
index 32cd636..0da5c7a 100644
--- a/kvm-all.c
+++ b/kvm-all.c
@@ -583,7 +583,15 @@ void kvm_set_phys_mem(target_phys_addr_t start_addr,
int err;
if (start_addr & ~TARGET_PAGE_MASK) {
- fprintf(stderr, "Only page-aligned memory slots supported\n");
+ if (flags >= IO_MEM_UNASSIGNED) {
+ if (!kvm_lookup_overlapping_slot(s, start_addr,
+ start_addr + size)) {
+ return;
+ }
+ fprintf(stderr, "Unaligned split of a KVM memory slot\n");
+ } else {
+ fprintf(stderr, "Only page-aligned memory slots supported\n");
+ }
abort();
}
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