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attestation 지원을 위한 AMD SEV 코드 분석 #4

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bokdeuk-jeong opened this issue Jul 6, 2022 · 1 comment
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attestation 지원을 위한 AMD SEV 코드 분석 #4

bokdeuk-jeong opened this issue Jul 6, 2022 · 1 comment
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@ArleCamille

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@bokdeuk-jeong
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KVM/Qemu내 AMD SEV용으로 attestation 지원을 위한 코드들 분석
@bokdeuk-jeong
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https://www.youtube.com/watch?v=B6mr-eh04ZQ 10분쯤에 KVM for regular VMs 에 보면 NS에서 실행되는 기존 VM 과 Realm world에서 실행될 VM의 차이점 설명합니다.

guest private memory용과 NS와 share할 메모리를 구분한다는 것과 이 2가지 용도들의 메모리 영역들이 하나의 memslot에서 표현 된다고 하는데요.
이 guest private memory 지원을 위해 qemu hva space에서 메모리를 할당받아 vm memory space에 매핑하지 않고, 별도의 memory-backed file을 만들어서 진행하려나 봅니다.
https://lwn.net/Articles/887500/
https://www.spinics.net/lists/linux-fsdevel/msg211507.html
https://www.spinics.net/lists/linux-fsdevel/msg212319.html
관련된 패치인데 머지되기전 주고 받은 의견들로 realm vm image 로딩에 관련된 부분도 엿볼 수 있습니다.

@bokdeuk-jeong bokdeuk-jeong changed the title AMD SEV attestation 지원을 위한 코드 분석 attestation 지원을 위한 AMD SEV 코드 분석 Jul 6, 2022
bitboom pushed a commit that referenced this issue Feb 22, 2023
perf(imx): speed-up console/uart TX using FIFO
4be8c09 
The current putc version test for TXEMPTY bit set (#6) instead
of waiting for TXFULL bit clear (#4), that slows the global
boot time as we are not taking benefit of the 32-byte FIFO.

We then need to implement the flush function to be sure the
transmit is complete (FIFO and shift register empty).

Signed-off-by: Loic Poulain <loic.poulain@linaro.org>
Change-Id: I54873a5203e2afdc230e44ce73284e7a80985b4f
bitboom pushed a commit that referenced this issue Mar 23, 2023
@jlmucb
Merge pull request #4 from rgerganov/rm-include
28582fd 
Remove unused include in cc_helpers.cc
bitboom pushed a commit that referenced this issue May 30, 2023
@jk-arm
Merge pull request #4 from ARM-software/release
2974c4d 
Merge pull request #3 from ARM-software/main
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