Date: Thu, 16 Sep 2021 19:23:47 GMT From: Colin Percival <cperciva@FreeBSD.org> To: src-committers@FreeBSD.org, dev-commits-src-all@FreeBSD.org, dev-commits-src-main@FreeBSD.org Subject: git: b43d7aa09b3c - main - EC2: Default to UEFI booting Message-ID: <202109161923.18GJNlwp067194@gitrepo.freebsd.org>
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The branch main has been updated by cperciva: URL: https://cgit.FreeBSD.org/src/commit/?id=b43d7aa09b3c91fb6b652306db2ac13e1459c497 commit b43d7aa09b3c91fb6b652306db2ac13e1459c497 Author: Colin Percival <cperciva@FreeBSD.org> AuthorDate: 2021-09-16 16:22:42 +0000 Commit: Colin Percival <cperciva@FreeBSD.org> CommitDate: 2021-09-16 19:23:19 +0000 EC2: Default to UEFI booting This reduces the FreeBSD boot time by approximately 5 seconds, roughly equally divided betwenn two factors: * Disk I/O is faster in the EFI loader since it can perform larger I/Os. (The BIOS loader is limited due to the use of bounce buffers in sub-1M memory.) * The EFI console is much faster than the VGA console. Note however that not all EC2 instance types support UEFI; as a general rule the newer instances (based on Amazon's "Nitro" platform) support UEFI but the older instances (based on Xen) do not. X-MFC: TBD based on tradeoff between performance and compatibility Relnotes: yes Sponsored by: https://www.patreon.com/cperciva --- release/Makefile.ec2 | 4 ---- 1 file changed, 4 deletions(-) diff --git a/release/Makefile.ec2 b/release/Makefile.ec2 index ce21d93c37ad..b29f54715fb3 100644 --- a/release/Makefile.ec2 +++ b/release/Makefile.ec2 @@ -25,12 +25,8 @@ SSMOPTS= --ssm-name ${SSMPREFIX}/${TARGET_ARCH:S/aarch64/arm64/}/base/ufs/${REVI EC2ARCH= --${TARGET_ARCH:S/aarch64/arm64/} .endif .if !defined(AMIBOOTMETHOD) -.if ${TARGET_ARCH} == "amd64" -AMIBOOTMETHOD= BIOS -.else AMIBOOTMETHOD= UEFI .endif -.endif .if ${AMIBOOTMETHOD} == "UEFI" && ${TARGET_ARCH} == "amd64" BOOTMODEOPT= --uefi .endif
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