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exec: Introduce qemu_maxrampagesize() and rename qemu_getrampagesize()

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Rename qemu_getrampagesize() to qemu_minrampagesize(). While at it,
properly rename find_max_supported_pagesize() to
find_min_backend_pagesize().

s390x is actually interested into the maximum ram pagesize, so
introduce and use qemu_maxrampagesize().

Add a TODO, indicating that looking at any mapped memory backends is not
100% correct in some cases.

Signed-off-by: David Hildenbrand <david@redhat.com>
Message-Id: <20190417113143.5551-3-david@redhat.com>
Reviewed-by: David Gibson <david@gibson.dropbear.id.au>
Reviewed-by: Igor Mammedov <imammedo@redhat.com>
Signed-off-by: Cornelia Huck <cohuck@redhat.com>
This commit is contained in:
David Hildenbrand 2019-04-17 13:31:43 +02:00 • committed by Cornelia Huck
parent 9138977b18
commit 905b7ee4d6
6 changed files with 47 additions and 10 deletions
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4
hw/ppc/spapr_caps.c
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@ -347,7 +347,7 @@ static void cap_hpt_maxpagesize_apply(SpaprMachineState *spapr,
warn_report("Many guests require at least 64kiB hpt-max-page-size");
}
spapr_check_pagesize(spapr, qemu_getrampagesize(), errp);
spapr_check_pagesize(spapr, qemu_minrampagesize(), errp);
}
static bool spapr_pagesize_cb(void *opaque, uint32_t seg_pshift,
@ -609,7 +609,7 @@ static SpaprCapabilities default_caps_with_cpu(SpaprMachineState *spapr,
uint8_t mps;
if (kvmppc_hpt_needs_host_contiguous_pages()) {
mps = ctz64(qemu_getrampagesize());
mps = ctz64(qemu_minrampagesize());
} else {
mps = 34; /* allow everything up to 16GiB, i.e. everything */
}