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Re: [Qemu-devel] [PATCH v2 7/8] pc: port 92 reset requires a low->high t
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From: |
Andreas Färber |
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Subject: |
Re: [Qemu-devel] [PATCH v2 7/8] pc: port 92 reset requires a low->high transition |
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Date: |
Mon, 12 May 2014 09:48:49 +0200 |
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User-agent: |
Mozilla/5.0 (X11; Linux x86_64; rv:24.0) Gecko/20100101 Thunderbird/24.4.0 |
Am 02.05.2014 16:33, schrieb Paolo Bonzini:
> The PIIX datasheet says that "before another INIT pulse can be
> generated via [port 92h], [bit 0] must be written back to a
> zero.
>
> This bug is masked right now because a full reset will clear the
> value of port 92h. But once we implement soft reset correctly,
> the next attempt to enable the A20 line by setting bit 1 (and
> leaving the others untouched) will cause another reset.
>
> Reviewed-by: Anthony Liguori <address@hidden>
> Signed-off-by: Paolo Bonzini <address@hidden>
Reviewed-by: Andreas Färber <address@hidden>
Andreas
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- Re: [Qemu-devel] [PATCH v2 1/8] kvm: reset state from the CPU's reset method, (continued)
- [Qemu-devel] [PATCH v2 3/8] target-i386: fix set of registers zeroed on reset, Paolo Bonzini, 2014/05/02
- [Qemu-devel] [PATCH v2 4/8] target-i386: preserve FPU and MSR state on INIT, Paolo Bonzini, 2014/05/02
- [Qemu-devel] [PATCH v2 5/8] apic: do not accept SIPI on the bootstrap processor, Paolo Bonzini, 2014/05/02
- [Qemu-devel] [PATCH v2 2/8] kvm: forward INIT signals coming from the chipset, Paolo Bonzini, 2014/05/02
- [Qemu-devel] [PATCH v2 7/8] pc: port 92 reset requires a low->high transition, Paolo Bonzini, 2014/05/02
- Re: [Qemu-devel] [PATCH v2 7/8] pc: port 92 reset requires a low->high transition,
Andreas Färber <=
- [Qemu-devel] [PATCH v2 6/8] cpu: make CPU_INTERRUPT_RESET available on all targets, Paolo Bonzini, 2014/05/02
- Re: [Qemu-devel] [PATCH v2 6/8] cpu: make CPU_INTERRUPT_RESET available on all targets, Peter Maydell, 2014/05/23
- Re: [Qemu-devel] [PATCH v2 6/8] cpu: make CPU_INTERRUPT_RESET available on all targets, Paolo Bonzini, 2014/05/23
- Re: [Qemu-devel] [PATCH v2 6/8] cpu: make CPU_INTERRUPT_RESET available on all targets, Peter Maydell, 2014/05/24
- Re: [Qemu-devel] [PATCH v2 6/8] cpu: make CPU_INTERRUPT_RESET available on all targets, Paolo Bonzini, 2014/05/24
- Re: [Qemu-devel] [PATCH v2 6/8] cpu: make CPU_INTERRUPT_RESET available on all targets, Peter Maydell, 2014/05/24
- Re: [Qemu-devel] [PATCH v2 6/8] cpu: make CPU_INTERRUPT_RESET available on all targets, Paolo Bonzini, 2014/05/27