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m1n1.hv: Make map_hw() fall back to map_sw() for unaligned cases

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Signed-off-by: Hector Martin <marcan@marcan.st>
This commit is contained in:
Hector Martin 2021-06-17 01:59:35 +09:00
parent db928acd61
commit 228033f9ce
1 changed files with 22 additions and 1 deletions
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23
proxyclient/m1n1/hv.py
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@ -130,9 +130,30 @@ class HV:
assert self.p.hv_map(ipa, 0, size, 0) >= 0
def map_hw(self, ipa, pa, size):
assert self.p.hv_map(ipa, pa | self.PTE_ATTRIBUTES | self.PTE_VALID, size, 1) >= 0
#print(f"map_hw {ipa:#x} -> {pa:#x} [{size:#x}]")
if (ipa & 0x3fff) != (pa & 0x3fff):
self.map_sw(ipa, pa, size)
return
ipa_p = align_up(ipa)
if ipa_p != ipa:
self.map_sw(ipa, pa, min(ipa_p - ipa, size))
pa += ipa_p - ipa
size -= ipa_p - ipa
if size <= 0:
return
size_p = align_down(size)
if size_p > 0:
#print(f"map_hw real {ipa_p:#x} -> {pa:#x} [{size_p:#x}]")
assert self.p.hv_map(ipa_p, pa | self.PTE_ATTRIBUTES | self.PTE_VALID, size_p, 1) >= 0
if size_p != size:
self.map_sw(ipa_p + size_p, pa + size_p, size - size_p)
def map_sw(self, ipa, pa, size):
#print(f"map_sw {ipa:#x} -> {pa:#x} [{size:#x}]")
assert self.p.hv_map(ipa, pa | self.SPTE_MAP, size, 1) >= 0
def map_hook(self, ipa, size, read=None, write=None, **kwargs):