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[Xen-ia64-devel] [Patch] Speculative Load/Store to IO memory
| To: | xen-ia64-devel <xen-ia64-devel@xxxxxxxxxxxxxxxxxxx> |
|---|---|
| Subject: | [Xen-ia64-devel] [Patch] Speculative Load/Store to IO memory |
| From: | Akio Takebe <takebe_akio@xxxxxxxxxxxxxx> |
| Date: | Thu, 17 May 2007 21:49:12 +0900 |
| Delivery-date: | Thu, 17 May 2007 05:46:08 -0700 |
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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
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