[Xen-ia64-devel] [Patch] Speculative Load/Store to IO memory

[Akio Takebe <takebe_akio@xxxxxxxxxxxxxx>]

Hi,

We met a panic_domain(NULL, "Undefined IPI-LHF read!\n"),
when we run test on Windows guest.
When the issue was occurred, the guest did "ld4.s r49=[r27]".
Reading IO memory by using "lds" is wrong.
But if the instruction is speculative,
Xen should set psr.ed then return to guest.

Signed-off-by: Akio Takebe <takebe_akio@xxxxxxxxxxxxxx>
Signed-off-by: Kouya Shimura <kouya@xxxxxxxxxxxxxx>

Best Regards,

Akio Takebe

Attachment: fix_speclative_io_memory.patch
Description: Binary data

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