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physmem: Replace check for RAMBlock offset 0 with xen_mr_is_memory 

For xen, when checking for the first RAM (xen_memory), use
xen_mr_is_memory() rather than checking for a RAMBlock with
offset 0.

All Xen machines create xen_memory first so this has no
functional change for existing machines.

Signed-off-by: Edgar E. Iglesias <edgar.iglesias@amd.com>
Reviewed-by: Stefano Stabellini <sstabellini@kernel.org>
Reviewed-by: David Hildenbrand <david@redhat.com>
Message-ID: <20240529140739.1387692-6-edgar.iglesias@gmail.com>
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
This commit is contained in:
Edgar E. Iglesias 2024-05-03 03:44:46 +02:00 committed by Philippe Mathieu-Daudé
parent 5d1c26029e
commit a5bdc451c7
1 changed files with 1 additions and 1 deletions
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2
system/physmem.c
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@ -2229,7 +2229,7 @@ static void *qemu_ram_ptr_length(RAMBlock *block, ram_addr_t addr,
* because we don't want to map the entire memory in QEMU.
* In that case just map the requested area.
*/
if (block->offset == 0) {
if (xen_mr_is_memory(block->mr)) {
return xen_map_cache(block->mr, block->offset + addr,
len, lock, lock,
is_write);