From: Paolo Bonzini <pbonzini@redhat.com>
To: Zixuan Wang <zixuanwang@google.com>,
kvm@vger.kernel.org, drjones@redhat.com
Cc: marcorr@google.com, baekhw@google.com, 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 06/17] x86 UEFI: Load GDT and TSS after UEFI boot up
Date: Mon, 20 Sep 2021 17:40:38 +0200 [thread overview]
Message-ID: <47de7f60-cfe7-0207-9c68-01dc38acc857@redhat.com> (raw)
In-Reply-To: <20210827031222.2778522-7-zixuanwang@google.com>
On 27/08/21 05:12, Zixuan Wang wrote:
> +.globl gdt64
> +gdt64:
> + .quad 0
> + .quad 0x00af9b000000ffff /* 64-bit code segment */
> + .quad 0x00cf93000000ffff /* 32/64-bit data segment */
> + .quad 0x00af1b000000ffff /* 64-bit code segment, not present */
> + .quad 0x00cf9b000000ffff /* 32-bit code segment */
> + .quad 0x008f9b000000FFFF /* 16-bit code segment */
> + .quad 0x008f93000000FFFF /* 16-bit data segment */
> + .quad 0x00cffb000000ffff /* 32-bit code segment (user) */
> + .quad 0x00cff3000000ffff /* 32/64-bit data segment (user) */
> + .quad 0x00affb000000ffff /* 64-bit code segment (user) */
> +
> + .quad 0 /* 6 spare selectors */
> + .quad 0
> + .quad 0
> + .quad 0
> + .quad 0
> + .quad 0
> +
> +tss_descr:
> + .rept max_cpus
> + .quad 0x000089000000ffff /* 64-bit avail tss */
> + .quad 0 /* tss high addr */
> + .endr
> +gdt64_end:
>
> +.globl tss
> +tss:
> + .rept max_cpus
> + .long 0
> + .quad 0
> + .quad 0, 0
> + .quad 0, 0, 0, 0, 0, 0, 0, 0
> + .long 0, 0, 0
> + .endr
> +tss_end:
> +
Please place the IDT (from the previous patch), GDT and TSS in a common
source file for both UEFI and multiboot. It could in fact be
lib/x86/desc.c even.
Duplicating the descriptors is fine, since they're only referred from
the startup code.
Paolo
next prev parent reply other threads:[~2021-09-20 15:40 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 [this message]
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
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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