diff mbox series

[v7,47/50] arm64: defconfig: Enable LPA2 support

Message ID	20240123145258.1462979-99-ardb+git@google.com (mailing list archive)
State	New, archived
Headers	show Return-Path: <linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org> Date: Tue, 23 Jan 2024 15:53:46 +0100 In-Reply-To: <20240123145258.1462979-52-ardb+git@google.com> Mime-Version: 1.0 References: <20240123145258.1462979-52-ardb+git@google.com> Message-ID: <20240123145258.1462979-99-ardb+git@google.com> Subject: [PATCH v7 47/50] arm64: defconfig: Enable LPA2 support From: Ard Biesheuvel <ardb+git@google.com> To: linux-arm-kernel@lists.infradead.org Cc: Ard Biesheuvel <ardb@kernel.org>, Catalin Marinas <catalin.marinas@arm.com>, Will Deacon <will@kernel.org>, Marc Zyngier <maz@kernel.org>, Mark Rutland <mark.rutland@arm.com>, Ryan Roberts <ryan.roberts@arm.com>, Anshuman Khandual <anshuman.khandual@arm.com>, Kees Cook <keescook@chromium.org> Precedence: list Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" <linux-arm-kernel-bounces@lists.infradead.org> Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org
Series	arm64: Add support for LPA2 and WXN at stage 1 \| expand [v7,00/50] arm64: Add support for LPA2 and WXN at stage 1 [v7,01/50] arm64: mm: Move PCI I/O emulation region above the vmemmap region [v7,02/50] arm64: mm: Move fixmap region above vmemmap region [v7,03/50] arm64: ptdump: Allow all region boundaries to be defined at boot time [v7,04/50] arm64: ptdump: Discover start of vmemmap region at runtime [v7,05/50] arm64: vmemmap: Avoid base2 order of struct page size to dimension region [v7,06/50] arm64: mm: Reclaim unused vmemmap region for vmalloc use [v7,07/50] arm64: kaslr: Adjust randomization range dynamically [v7,08/50] arm64: kernel: Manage absolute relocations in code built under pi/ [v7,09/50] arm64: kernel: Don't rely on objcopy to make code under pi/ __init [v7,10/50] arm64: head: move relocation handling to C code [v7,11/50] arm64: idreg-override: Move to early mini C runtime [v7,12/50] arm64: kernel: Remove early fdt remap code [v7,13/50] arm64: head: Clear BSS and the kernel page tables in one go [v7,14/50] arm64: Move feature overrides into the BSS section [v7,15/50] arm64: head: Run feature override detection before mapping the kernel [v7,16/50] arm64: head: move dynamic shadow call stack patching into early C runtime [v7,17/50] arm64: cpufeature: Add helper to test for CPU feature overrides [v7,18/50] arm64: kaslr: Use feature override instead of parsing the cmdline again [v7,19/50] arm64: idreg-override: Create a pseudo feature for rodata=off [v7,20/50] arm64: Add helpers to probe local CPU for PAC and BTI support [v7,21/50] arm64: head: allocate more pages for the kernel mapping [v7,22/50] arm64: head: move memstart_offset_seed handling to C code [v7,23/50] arm64: mm: Make kaslr_requires_kpti() a static inline [v7,24/50] arm64: mmu: Make __cpu_replace_ttbr1() out of line [v7,25/50] arm64: head: Move early kernel mapping routines into C code [v7,26/50] arm64: mm: Use 48-bit virtual addressing for the permanent ID map [v7,27/50] arm64: pgtable: Decouple PGDIR size macros from PGD/PUD/PMD levels [v7,28/50] arm64: kernel: Create initial ID map from C code [v7,29/50] arm64: mm: avoid fixmap for early swapper_pg_dir updates [v7,30/50] arm64: mm: omit redundant remap of kernel image [v7,31/50] arm64: Revert "mm: provide idmap pointer to cpu_replace_ttbr1()" [v7,32/50] arm64: mm: Handle LVA support as a CPU feature [v7,33/50] arm64: mm: Add feature override support for LVA [v7,34/50] arm64: Avoid #define'ing PTE_MAYBE_NG to 0x0 for asm use [v7,35/50] arm64: Add ESR decoding for exceptions involving translation level -1 [v7,36/50] arm64: mm: Wire up TCR.DS bit to PTE shareability fields [v7,37/50] arm64: mm: Add LPA2 support to phys<->pte conversion routines [v7,38/50] arm64: mm: Add definitions to support 5 levels of paging [v7,39/50] arm64: mm: add LPA2 and 5 level paging support to G-to-nG conversion [v7,40/50] arm64: Enable LPA2 at boot if supported by the system [v7,41/50] arm64: mm: Add 5 level paging support to fixmap and swapper handling [v7,42/50] arm64: kasan: Reduce minimum shadow alignment and enable 5 level paging [v7,43/50] arm64: mm: Add support for folding PUDs at runtime [v7,44/50] arm64: ptdump: Disregard unaddressable VA space [v7,45/50] arm64: ptdump: Deal with translation levels folded at runtime [v7,46/50] arm64: Enable 52-bit virtual addressing for 4k and 16k granule configs [v7,47/50] arm64: defconfig: Enable LPA2 support [v7,48/50] mm: add arch hook to validate mmap() prot flags [v7,49/50] arm64: mm: add support for WXN memory translation attribute [v7,50/50] arm64: Set the default CONFIG_ARM64_VA_BITS_52 in Kconfig rather than defconfig

Commit Message

Ard Biesheuvel Jan. 23, 2024, 2:53 p.m. UTC

From: Ard Biesheuvel <ardb@kernel.org>

We typically enable support in defconfig for all architectural features
for which we can detect at runtime if the hardware actually supports
them.

Now that we have implemented support for LPA2 based 52-bit virtual
addressing in a way that should not impact 48-bit operation on non-LPA2
CPU, we can do the same, and enable 52-bit virtual addressing by
default.

Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
---
 arch/arm64/configs/defconfig | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff mbox series

Patch

diff --git a/arch/arm64/configs/defconfig b/arch/arm64/configs/defconfig
index e6cf3e5d63c3..c5919a762109 100644
--- a/arch/arm64/configs/defconfig
+++ b/arch/arm64/configs/defconfig
@@ -76,7 +76,7 @@  CONFIG_ARCH_VEXPRESS=y
 CONFIG_ARCH_VISCONTI=y
 CONFIG_ARCH_XGENE=y
 CONFIG_ARCH_ZYNQMP=y
-CONFIG_ARM64_VA_BITS_48=y
+CONFIG_ARM64_VA_BITS_52=y
 CONFIG_SCHED_MC=y
 CONFIG_SCHED_SMT=y
 CONFIG_NUMA=y