From: Ard Biesheuvel <ardb@kernel.org>
To: linux-arm-kernel@lists.infradead.org
Cc: mark.rutland@arm.com, android-kvm@google.com,
Ard Biesheuvel <ardb@kernel.org>, Marc Zyngier <maz@kernel.org>,
Will Deacon <will@kernel.org>
Subject: [RFC PATCH 5/8] arm64: head: populate page tables before disabling the MMU
Date: Fri, 4 Mar 2022 18:56:54 +0100 [thread overview]
Message-ID: <20220304175657.2744400-6-ardb@kernel.org> (raw)
In-Reply-To: <20220304175657.2744400-1-ardb@kernel.org>
Reorder the call to init_kernel_el() with the creation of the page
tables so the latter code runs with MMU and caches enabled if that is
how we entered.
Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
---
arch/arm64/kernel/head.S | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/arch/arm64/kernel/head.S b/arch/arm64/kernel/head.S
index b82c86fc9141..6041078df62a 100644
--- a/arch/arm64/kernel/head.S
+++ b/arch/arm64/kernel/head.S
@@ -93,9 +93,9 @@ SYM_CODE_START(primary_entry)
bl record_mmu_state
bl record_kaslr_offset
bl preserve_boot_args
+ bl __create_page_tables
bl init_kernel_el // w0=cpu_boot_mode
bl set_cpu_boot_mode_flag
- bl __create_page_tables
/*
* The following calls CPU setup code, see arch/arm64/mm/proc.S for
* details.
--
2.30.2
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next prev parent reply other threads:[~2022-03-04 18:00 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-03-04 17:56 [RFC PATCH 0/8] arm64: efi: leave MMU and caches on at boot Ard Biesheuvel
2022-03-04 17:56 ` [RFC PATCH 1/8] arm64: kaslr: deal with init called with VA randomization enabled Ard Biesheuvel
2022-03-04 17:56 ` [RFC PATCH 2/8] arm64: head: record the MMU state at primary entry Ard Biesheuvel
2022-03-04 17:56 ` [RFC PATCH 3/8] arm64: head: take KASLR seed passed via x1 into account Ard Biesheuvel
2022-03-04 17:56 ` [RFC PATCH 4/8] arm64: head: avoid cache invalidation when entering with the MMU on Ard Biesheuvel
2022-03-04 17:56 ` Ard Biesheuvel [this message]
2022-03-04 17:56 ` [RFC PATCH 6/8] arm64: head: clean the ID map page to the PoC Ard Biesheuvel
2022-03-04 17:56 ` [RFC PATCH 7/8] arm64: lds: move idmap_pg_dir out of .rodata Ard Biesheuvel
2022-03-04 17:56 ` [RFC PATCH 8/8] arm64: efi: leave MMU and caches on when handing over to the core kernel Ard Biesheuvel
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