From: Andrew Jones <drjones@redhat.com>
To: Zixuan Wang <zxwang42@gmail.com>
Cc: kvm@vger.kernel.org, Paolo Bonzini <pbonzini@redhat.com>,
Marc Orr <marcorr@google.com>,
"Hyunwook (Wooky) Baek" <baekhw@google.com>,
Tom Roeder <tmroeder@google.com>,
erdemaktas@google.com, rientjes@google.com, seanjc@google.com,
brijesh.singh@amd.com, Thomas.Lendacky@amd.com,
varad.gautam@suse.com, jroedel@suse.de, bp@suse.de
Subject: Re: [kvm-unit-tests PATCH v2 07/17] x86 UEFI: Set up memory allocator
Date: Tue, 5 Oct 2021 08:05:49 +0200 [thread overview]
Message-ID: <20211005060549.clar5nakynz2zecl@gator.home> (raw)
In-Reply-To: <CAEDJ5ZS14keuvWEofbi2YD9QZ8ZE3nGZoq421wWEXy5jQnFkaQ@mail.gmail.com>
On Mon, Oct 04, 2021 at 02:43:52PM -0700, Zixuan Wang wrote:
> On Mon, Oct 4, 2021 at 6:08 AM Andrew Jones <drjones@redhat.com> wrote:
> >
> > On Fri, Aug 27, 2021 at 03:12:12AM +0000, Zixuan Wang wrote:
> > > KVM-Unit-Tests library implements a memory allocator which requires
> > > two arguments to set up (See `lib/alloc_phys.c:phys_alloc_init()` for
> > > more details):
> > >
> > > #endif /* TARGET_EFI */
> > > --
> > > 2.33.0.259.gc128427fd7-goog
> > >
> >
> > How about just getting the memory map (efi_boot_memmap) and then exiting
> > boot services in arch-neutral code and then have arch-specific code decide
> > what to do with the memory map?
> >
> > Thanks,
> > drew
> >
>
> I see, I will try to refactor the code in the next version:
>
> 1. Defines an arch-neutral data structure to store the memory map
> 2. Calls an arch-neutral function to get the memory map
So, in my first PoC, I was using the AArch64 mem_region structure,
but in hindsight, an arch-neutral structure already exists that
I should have used from the AArch64 code. That arch-neutral
structure is simply the EFI structure (efi_boot_memmap).
> 3. Exits UEFI boot services
> 4. Calls an arch-specific function to process the memory map
Sounds good.
Thanks,
drew
next prev parent reply other threads:[~2021-10-05 6:05 UTC|newest]
Thread overview: 47+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-08-27 3:12 [kvm-unit-tests PATCH v2 00/17] x86_64 UEFI and AMD SEV/SEV-ES support Zixuan Wang
2021-08-27 3:12 ` [kvm-unit-tests PATCH v2 01/17] x86 UEFI: Copy code from Linux Zixuan Wang
2021-09-20 14:33 ` Paolo Bonzini
2021-09-21 3:58 ` Zixuan Wang
2021-09-21 6:37 ` Varad Gautam
2021-09-21 16:33 ` Andrew Jones
2021-09-22 20:10 ` Zixuan Wang
2021-08-27 3:12 ` [kvm-unit-tests PATCH v2 02/17] x86 UEFI: Implement UEFI function calls Zixuan Wang
2021-09-21 16:43 ` Andrew Jones
2021-09-22 20:17 ` Zixuan Wang
2021-08-27 3:12 ` [kvm-unit-tests PATCH v2 03/17] x86 UEFI: Copy code from GNU-EFI Zixuan Wang
2021-10-04 12:44 ` Andrew Jones
2021-10-04 22:09 ` Zixuan Wang
2021-10-05 5:58 ` Andrew Jones
2021-08-27 3:12 ` [kvm-unit-tests PATCH v2 04/17] x86 UEFI: Boot from UEFI Zixuan Wang
2021-10-04 12:55 ` Andrew Jones
2021-10-04 21:30 ` Zixuan Wang
2021-08-27 3:12 ` [kvm-unit-tests PATCH v2 05/17] x86 UEFI: Load IDT after UEFI boot up Zixuan Wang
2021-08-27 3:12 ` [kvm-unit-tests PATCH v2 06/17] x86 UEFI: Load GDT and TSS " Zixuan Wang
2021-09-20 15:40 ` Paolo Bonzini
2021-09-21 4:15 ` Zixuan Wang
2021-08-27 3:12 ` [kvm-unit-tests PATCH v2 07/17] x86 UEFI: Set up memory allocator Zixuan Wang
2021-10-04 13:06 ` Andrew Jones
2021-10-04 21:43 ` Zixuan Wang
2021-10-05 6:05 ` Andrew Jones [this message]
2021-08-27 3:12 ` [kvm-unit-tests PATCH v2 08/17] x86 UEFI: Set up RSDP after UEFI boot up Zixuan Wang
2021-10-04 13:21 ` Andrew Jones
2021-10-04 21:58 ` Zixuan Wang
2021-08-27 3:12 ` [kvm-unit-tests PATCH v2 09/17] x86 UEFI: Set up page tables Zixuan Wang
2021-09-20 15:43 ` Paolo Bonzini
2021-09-21 4:31 ` Zixuan Wang
2021-08-27 3:12 ` [kvm-unit-tests PATCH v2 10/17] x86 UEFI: Convert x86 test cases to PIC Zixuan Wang
2021-08-27 3:12 ` [kvm-unit-tests PATCH v2 11/17] x86 AMD SEV: Initial support Zixuan Wang
2021-08-27 14:51 ` Tom Lendacky
2021-08-31 19:36 ` Zixuan Wang
2021-08-27 3:12 ` [kvm-unit-tests PATCH v2 12/17] x86 AMD SEV: Page table with c-bit Zixuan Wang
2021-08-27 3:12 ` [kvm-unit-tests PATCH v2 13/17] x86 AMD SEV-ES: Check SEV-ES status Zixuan Wang
2021-08-27 14:55 ` Tom Lendacky
2021-08-31 19:38 ` Zixuan Wang
2021-08-27 3:12 ` [kvm-unit-tests PATCH v2 14/17] x86 AMD SEV-ES: Load GDT with UEFI segments Zixuan Wang
2021-09-20 16:00 ` Paolo Bonzini
2021-09-21 4:41 ` Zixuan Wang
2021-08-27 3:12 ` [kvm-unit-tests PATCH v2 15/17] x86 AMD SEV-ES: Copy UEFI #VC IDT entry Zixuan Wang
2021-08-27 3:12 ` [kvm-unit-tests PATCH v2 16/17] x86 AMD SEV-ES: Set up GHCB page Zixuan Wang
2021-08-27 3:12 ` [kvm-unit-tests PATCH v2 17/17] x86 AMD SEV-ES: Add test cases Zixuan Wang
2021-10-04 13:27 ` [kvm-unit-tests PATCH v2 00/17] x86_64 UEFI and AMD SEV/SEV-ES support Andrew Jones
2021-10-04 20:54 ` Zixuan Wang
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