Re: [SeaBIOS] [RFC 0/3] NVDIMM booting support

2015-09-22 Thread Gerd Hoffmann
Hi, > Do you think NVDIMM support will ultimately be faster than DMA or are > there other advantages to using NVDIMMs? Guest can write to nvdimm. So it can update the kernel & reboot into the new kernel without help from the host. cheers, Gerd

Re: [SeaBIOS] [RFC 0/3] NVDIMM booting support

2015-09-22 Thread Marc Marí
On Mon, 21 Sep 2015 22:36:43 +0200 Hannes Reinecke wrote: > On 09/21/2015 04:58 PM, Paolo Bonzini wrote: > > > > > > On 21/09/2015 15:14, Marc Marí wrote: > >> This patch series is not ready for merging. There are things > >> missing and questions to be answered: > >> - Is it necessary to retr

Re: [SeaBIOS] [RFC 0/3] NVDIMM booting support

2015-09-21 Thread Hannes Reinecke
On 09/21/2015 04:58 PM, Paolo Bonzini wrote: > > > On 21/09/2015 15:14, Marc Marí wrote: >> This patch series is not ready for merging. There are things missing and >> questions to be answered: >> - Is it necessary to retrieve any other data from the NVDIMM? >> - Is there any other nicer (and f

Re: [SeaBIOS] [RFC 0/3] NVDIMM booting support

2015-09-21 Thread Marc Marí
On Mon, 21 Sep 2015 12:17:53 -0400 "Kevin O'Connor" wrote: > On Mon, Sep 21, 2015 at 03:14:04PM +0200, Marc Marí wrote: > > Implement support for booting from a PMEM region compatible with > > NVDIMM and NFIT specifications. > > > > The current implementation is still slow. When running a Linux

Re: [SeaBIOS] [RFC 0/3] NVDIMM booting support

2015-09-21 Thread Kevin O'Connor
On Mon, Sep 21, 2015 at 03:14:04PM +0200, Marc Marí wrote: > Implement support for booting from a PMEM region compatible with NVDIMM and > NFIT specifications. > > The current implementation is still slow. When running a Linux guest on top of > QEMU in x86: > > Using actual -kernel option: > QEMU

Re: [SeaBIOS] [RFC 0/3] NVDIMM booting support

2015-09-21 Thread Marc Marí
On Mon, 21 Sep 2015 16:58:31 +0200 Paolo Bonzini wrote: > > > On 21/09/2015 15:14, Marc Marí wrote: > > This patch series is not ready for merging. There are things > > missing and questions to be answered: > > - Is it necessary to retrieve any other data from the NVDIMM? > > - Is there any o

Re: [SeaBIOS] [RFC 0/3] NVDIMM booting support

2015-09-21 Thread Paolo Bonzini
On 21/09/2015 15:14, Marc Marí wrote: > This patch series is not ready for merging. There are things missing and > questions to be answered: > - Is it necessary to retrieve any other data from the NVDIMM? > - Is there any other nicer (and faster) option for the page table? > - Make NVDIMM a co

[SeaBIOS] [RFC 0/3] NVDIMM booting support

2015-09-21 Thread Marc Marí
Implement support for booting from a PMEM region compatible with NVDIMM and NFIT specifications. The current implementation is still slow. When running a Linux guest on top of QEMU in x86: Using actual -kernel option: QEMU startup time: .080 BIOS startup time: .060 Kernel setup time: .590 Total t