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[Xen-devel] [PATCH] Fix write parameter masking for 32-bit guests.
| To: | <xen-devel@xxxxxxxxxxxxxxxxxxx> |
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| Subject: | [Xen-devel] [PATCH] Fix write parameter masking for 32-bit guests. |
| From: | "Cui, Dexuan" <dexuan.cui@xxxxxxxxx> |
| Date: | Sun, 13 May 2007 15:49:22 +0800 |
| Cc: | Keir Fraser <keir@xxxxxxxxxxxxx> |
| Delivery-date: | Sun, 13 May 2007 00:47:48 -0700 |
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| Thread-index: | AceVMzhKOfboKd4hQNKFfDAIGnB8iA== |
| Thread-topic: | [PATCH] Fix write parameter masking for 32-bit guests. |
Changeset 15046:e527b4ff1948 breaks 32-bit HVM guest: when req->size is 4, "1UL << 32" returns 1 in IA32 system, so the mask becomes 0 wrongly. The attached patch fixes this by using 64-bit left-shift. Signed-off-by: Dexuan Cui <dexuan.cui@xxxxxxxxx>
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