Correct Palmer's email address
On Fri, Apr 17, 2020 at 10:12 AM Bin Meng bmeng.cn@gmail.com wrote:
Hi Rick,
On Fri, Apr 17, 2020 at 9:12 AM Rick Chen rickchen36@gmail.com wrote:
Hi Bin
Hi Rick,
On Fri, Apr 17, 2020 at 8:51 AM Rick Chen rickchen36@gmail.com wrote:
rick@andestech.com 於 2020年4月17日 週五 上午8:39寫道：
-----Original Message----- From: Atish Patra [mailto:atishp@atishpatra.org] Sent: Wednesday, April 15, 2020 7:18 AM To: Bin Meng Cc: Ard Biesheuvel; Heinrich Schuchardt; U-Boot Mailing List; Anup Patel; Lukas Auer; Alexander Graf; Rick Jian-Zhi Chen(陳建志); Palmer Dabbelt Subject: Re: [PATCH v5 0/6] RISC-V DT related fixes for reserved memory & UEFI
On Mon, Apr 13, 2020 at 3:42 PM Bin Meng bmeng.cn@gmail.com wrote:
Hi Atish,
On Tue, Apr 14, 2020 at 6:02 AM Atish Patra atishp@atishpatra.org wrote: > > On Tue, Apr 7, 2020 at 10:35 AM Atish Patra atishp@atishpatra.org wrote: > > > > On Mon, Apr 6, 2020 at 11:51 PM Ard Biesheuvel > > ard.biesheuvel@linaro.org wrote: > > > > > > On Tue, 7 Apr 2020 at 08:46, Heinrich Schuchardt xypron.glpk@gmx.de wrote: > > > > > > > > On 4/6/20 11:01 PM, Ard Biesheuvel wrote: > > > > > On Mon, 6 Apr 2020 at 22:45, Atish Patra atish.patra@wdc.com wrote: > > > > >> > > > > >> This series adds few DT related fixes required for Linux > > > > >> EFI stub to work on RISC-V. > > > > >> > > > > > > > > > > I'm not sure how this is supposed to work, since DT reserved > > > > > memory regions are not used by EFI. If you want to reserve > > > > > memory on a UEFI system, you have to reserve it in the UEFI memory map from firmware. > > > > > The DT reserved-memory node is taken into account too late, > > > > > the /memreserve/ entries are ignored entirely. > > > > > > > > Hello Ard, > > > > > > > > thanks for reviewing. > > > > > > > > What do you mean by "The DT reserved-memory node is taken into > > > > account too late"? > > > > > > > > Cf. commit 7be64b885a36 ("cmd: bootefi: Parse reserved-memory > > > > node from DT") > > > > > > > > > > What I mean is that the EFI stub in Linux uses memory allocation > > > functions, expecting the firmware to ensure that those > > > allocations do not conflict with memory descriptions and > > > reservations in DT. So if the firmware wants to express this > > > redundantly, by passing reservations in both reserved-memory and > > > in the EFI memory map, that is probably fine. > > > > > > Also, I must sheepishly admit that I only realize now that this > > > patch set is against u-boot not Linux :-) > > > > > :) > > > > > So if fixed reserved-memory regions are only being used to seed > > > the reserved regions in the EFI memory map, you can safely ignore me. > > > > Yeah. That's the purpose. Having reserved memory nodes in the > > final DT used by linux also ensures that proper Linux adds a > > reserved memory block or removes it from memblock entries > > depending on "no-map" property. > > > > > Apologies for the noise. > > > > > > > > -- > > Regards, > > Atish > > Any other comments on the series ? It would be great if this series > could be merged before > v2020.07 release.
I hope so if no one objects the proposed solution here in U-Boot vs. the PMP SBI extension. I need have another look at the latest version of patches though.
Thanks. As far as I know, there is no opposition to the current approach adopted in U-Boot. I am hoping EFI stub series can be merged before 5.8. If this series can go in v2020.07, RISC-V will have all required support to boot via EFI from Linux kernel v5.8 and U-Boot v2020.07.
OK! I will pull and send a PR ASAP.
I will need have a look and test today. Please wait for some time.
OK No problem :)
Do you know what happened to this series?
I only see patch 3, 5, 6 showing up on the patchwork. Are other patches already applied somewhere?
I am referring to http://patchwork.ozlabs.org/project/uboot/list/?series=168858
Regards, Bin