lkml.org 
[lkml]   [2006]   [Dec]   [28]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: [patch] kvm: fix GFP_KERNEL allocation in atomic section in kvm_dev_ioctl_create_vcpu()
Ingo Molnar wrote:
> Subject: [patch] kvm: fix GFP_KERNEL allocation in atomic section in kvm_dev_ioctl_create_vcpu()
> From: Ingo Molnar <mingo@elte.hu>
>
> fix a GFP_KERNEL allocation in atomic section bug:
> kvm_dev_ioctl_create_vcpu() called kvm_mmu_init(), which calls
> alloc_pages(), while holding the vcpu. The fix is to set up the MMU
> state earlier, it does not require a loaded CPU state.
>

Yes it does. It calls nonpaging_init_context() which calls
vmx_set_cr3() which promptly trashes address space of the VM that
previously ran on that vcpu (or, if there were none, logs a vmwrite error).

--
error compiling committee.c: too many arguments to function

-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/

\
 
 \ /
  Last update: 2006-12-28 13:59    [W:0.052 / U:1.052 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site