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Re: [Qemu-devel] [PATCH v2 3/6] hw/mips_int: hold BQL for all interrupt
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From: |
Paolo Bonzini |
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Subject: |
Re: [Qemu-devel] [PATCH v2 3/6] hw/mips_int: hold BQL for all interrupt requests |
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Date: |
Wed, 4 Apr 2018 13:23:57 +0200 |
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User-agent: |
Mozilla/5.0 (X11; Linux x86_64; rv:52.0) Gecko/20100101 Thunderbird/52.6.0 |
On 04/04/2018 12:23, Alex Bennée wrote:
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>> From: Aleksandar Markovic <address@hidden>
>>
>> Make sure BQL is held for all interrupt requests.
>>
>> For MTTCG-enabled configurations, handling soft and hard interrupts
>> between vCPUs must be properly locked. By acquiring BQL, make sure
>> all paths triggering an IRQ are synchronized.
>>
>> Signed-off-by: Miodrag Dinic <address@hidden>
>> Signed-off-by: Aleksandar Markovic <address@hidden>
Is this actually necessary? What paths are not taking the lock?
Thanks,
Paolo