On 03.09.21 12:07, David Hildenbrand wrote:
On 03.09.21 10:47, David Hildenbrand wrote:
On 03.09.21 00:32, Peter Xu wrote:
On Thu, Sep 02, 2021 at 03:14:30PM +0200, David Hildenbrand wrote:
diff --git a/migration/migration.c b/migration/migration.c
index bb909781b7..ae97c2c461 100644
--- a/migration/migration.c
+++ b/migration/migration.c
@@ -391,7 +391,7 @@ int 
migrate_send_rp_message_req_pages(MigrationIncomingState *mis,
    int migrate_send_rp_req_pages(MigrationIncomingState *mis,
                                  RAMBlock *rb, ram_addr_t start, uint64_t 
haddr)
    {
-    void *aligned = (void *)(uintptr_t)(haddr & (-qemu_ram_pagesize(rb)));
+    void *aligned = (void *)QEMU_ALIGN_DOWN(haddr, qemu_ram_pagesize(rb));

Is uintptr_t still needed?  I thought it would generate a warning otherwise but
not sure.

It doesn't in my setup, but maybe it will on 32bit archs ...

I discussed this with Phil in

https://lkml.kernel.org/r/2c8d80ad-f171-7d5f-3235-92f02fa17...@redhat.com

Maybe

QEMU_ALIGN_PTR_DOWN((void *)haddr, qemu_ram_pagesize(rb)));

Is really what we want.

... but it would suffer the same issue I think. I just ran it trough the
gitlab pipeline, including "i386-fedora-cross-compile" ... and it seems
to compile just fine, which is weird, because I'd also expect

[I know, talking to my self] Some 32bit tests actually did fail later, so the CI is able to catch this properly.

--
Thanks,

David / dhildenb


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