Re: [edk2] [PATCH] ARM: Virt: Don't generate RTC ACPI node when using UEFI

2016-01-12 Thread Shannon Zhao
On 2016/1/12 23:30, Peter Maydell wrote: > On 12 January 2016 at 15:24, Shannon Zhao wrote: >> > When booting VM through UEFI, UEFI takes ownership of the RTC hardware. >> > To DTB UEFI could call libfdt api to disable the RTC device node, but to >> > ACPI it couldn't do that. Therefore, we don'

Re: [edk2] [PATCH] ARM: Virt: Don't generate RTC ACPI node when using UEFI

2016-01-13 Thread Laszlo Ersek
On 01/12/16 16:30, Peter Maydell wrote: > On 12 January 2016 at 15:24, Shannon Zhao wrote: >> When booting VM through UEFI, UEFI takes ownership of the RTC hardware. >> To DTB UEFI could call libfdt api to disable the RTC device node, but to >> ACPI it couldn't do that. Therefore, we don't generat

Re: [edk2] [PATCH] ARM: Virt: Don't generate RTC ACPI node when using UEFI

2016-01-13 Thread Laszlo Ersek
On 01/12/16 16:24, Shannon Zhao wrote: > When booting VM through UEFI, UEFI takes ownership of the RTC hardware. > To DTB UEFI could call libfdt api to disable the RTC device node, but to > ACPI it couldn't do that. Therefore, we don't generate the RTC ACPI > device in QEMU when using UEFI. > > Si

Re: [edk2] [PATCH] ARM: Virt: Don't generate RTC ACPI node when using UEFI

2016-01-13 Thread Ard Biesheuvel
On 13 January 2016 at 11:18, Laszlo Ersek wrote: > On 01/12/16 16:24, Shannon Zhao wrote: >> When booting VM through UEFI, UEFI takes ownership of the RTC hardware. >> To DTB UEFI could call libfdt api to disable the RTC device node, but to >> ACPI it couldn't do that. Therefore, we don't generate

Re: [edk2] [PATCH] ARM: Virt: Don't generate RTC ACPI node when using UEFI

2016-01-13 Thread Laszlo Ersek
On 01/13/16 11:20, Ard Biesheuvel wrote: > On 13 January 2016 at 11:18, Laszlo Ersek wrote: >> On 01/12/16 16:24, Shannon Zhao wrote: >>> When booting VM through UEFI, UEFI takes ownership of the RTC hardware. >>> To DTB UEFI could call libfdt api to disable the RTC device node, but to >>> ACPI it