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swiotlb-xen: suppress certain init retries

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Only on the 2nd of the paths leading to xen_swiotlb_init()'s "error"
label it is useful to retry the allocation; the first one did already
iterate through all possible order values.

Signed-off-by: Jan Beulich <jbeulich@suse.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Link: https://lore.kernel.org/r/56477481-87da-4962-9661-5e1b277efde0@suse.com
Signed-off-by: Juergen Gross <jgross@suse.com>
This commit is contained in:
Jan Beulich 2021-09-07 14:05:54 +02:00 committed by Juergen Gross
parent d9a688add3
commit 79ca5f778a
1 changed files with 2 additions and 1 deletions
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3
drivers/xen/swiotlb-xen.c
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@ -184,7 +184,7 @@ int __ref xen_swiotlb_init(void)
order--;
}
if (!start)
goto error;
goto exit;
if (order != get_order(bytes)) {
pr_warn("Warning: only able to allocate %ld MB for software IO TLB\n",
(PAGE_SIZE << order) >> 20);
@ -214,6 +214,7 @@ int __ref xen_swiotlb_init(void)
pr_info("Lowering to %luMB\n", bytes >> 20);
goto retry;
}
exit:
pr_err("%s (rc:%d)\n", xen_swiotlb_error(m_ret), rc);
return rc;
}