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[v3,58/60] arm64: defconfig: Enable LPA2 support

Message ID	20230307140522.2311461-59-ardb@kernel.org
State	New
Headers	Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) client-ip=2620:137:e000::1:20; From: Ard Biesheuvel <ardb@kernel.org> To: linux-kernel@vger.kernel.org Cc: linux-arm-kernel@lists.infradead.org, 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> Subject: [PATCH v3 58/60] arm64: defconfig: Enable LPA2 support Date: Tue, 7 Mar 2023 15:05:20 +0100 Message-Id: <20230307140522.2311461-59-ardb@kernel.org> In-Reply-To: <20230307140522.2311461-1-ardb@kernel.org> References: <20230307140522.2311461-1-ardb@kernel.org> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Precedence: bulk
Series	arm64: Add support for LPA2 at stage1 and WXN \| [v3,00/60] arm64: Add support for LPA2 at stage1 and WXN [v3,01/60] arm64: kernel: Disable latent_entropy GCC plugin in early C runtime [v3,02/60] arm64: mm: Take potential load offset into account when KASLR is off [v3,03/60] arm64: mm: get rid of kimage_vaddr global variable [v3,04/60] arm64: mm: Move PCI I/O emulation region above the vmemmap region [v3,05/60] arm64: mm: Move fixmap region above vmemmap region [v3,06/60] arm64: ptdump: Allow VMALLOC_END to be defined at boot [v3,07/60] arm64: ptdump: Discover start of vmemmap region at runtime [v3,08/60] arm64: vmemmap: Avoid base2 order of struct page size to dimension region [v3,09/60] arm64: mm: Reclaim unused vmemmap region for vmalloc use [v3,10/60] arm64: kaslr: Adjust randomization range dynamically [v3,11/60] arm64: kaslr: drop special case for ThunderX in kaslr_requires_kpti() [v3,12/60] arm64: Turn kaslr_feature_override into a generic SW feature override [v3,13/60] arm64: kvm: honour 'nokaslr' command line option for the HYP VA space [v3,14/60] arm64: kernel: Manage absolute relocations in code built under pi/ [v3,15/60] arm64: kernel: Don't rely on objcopy to make code under pi/ __init [v3,16/60] arm64: head: move relocation handling to C code [v3,17/60] arm64: idreg-override: Omit non-NULL checks for override pointer [v3,18/60] arm64: idreg-override: Prepare for place relative reloc patching [v3,19/60] arm64: idreg-override: Avoid parameq() and parameqn() [v3,20/60] arm64: idreg-override: avoid strlen() to check for empty strings [v3,21/60] arm64: idreg-override: Avoid sprintf() for simple string concatenation [v3,22/60] arm64: idreg-override: Avoid kstrtou64() to parse a single hex digit [v3,23/60] arm64: idreg-override: Move to early mini C runtime [v3,24/60] arm64: kernel: Remove early fdt remap code [v3,25/60] arm64: head: Clear BSS and the kernel page tables in one go [v3,26/60] arm64: Move feature overrides into the BSS section [v3,27/60] arm64: head: Run feature override detection before mapping the kernel [v3,28/60] arm64: head: move dynamic shadow call stack patching into early C runtime [v3,29/60] arm64: kaslr: Use feature override instead of parsing the cmdline again [v3,30/60] arm64: idreg-override: Create a pseudo feature for rodata=off [v3,31/60] arm64: Add helpers to probe local CPU for PAC/BTI/E0PD support [v3,32/60] arm64: head: allocate more pages for the kernel mapping [v3,33/60] arm64: head: move memstart_offset_seed handling to C code [v3,34/60] arm64: head: Move early kernel mapping routines into C code [v3,35/60] arm64: mm: Use 48-bit virtual addressing for the permanent ID map [v3,36/60] arm64: pgtable: Decouple PGDIR size macros from PGD/PUD/PMD levels [v3,37/60] arm64: kernel: Create initial ID map from C code [v3,38/60] arm64: mm: avoid fixmap for early swapper_pg_dir updates [v3,39/60] arm64: mm: omit redundant remap of kernel image [v3,40/60] arm64: Revert "mm: provide idmap pointer to cpu_replace_ttbr1()" [v3,41/60] arm64/mm: Add FEAT_LPA2 specific TCR_EL1.DS field [v3,42/60] arm64/mm: Add FEAT_LPA2 specific ID_AA64MMFR0.TGRAN[2] [v3,43/60] arm64: mm: Handle LVA support as a CPU feature [v3,44/60] arm64: mm: Add feature override support for LVA [v3,45/60] arm64: mm: Wire up TCR.DS bit to PTE shareability fields [v3,46/60] arm64: mm: Add LPA2 support to phys<->pte conversion routines [v3,47/60] arm64: mm: Add definitions to support 5 levels of paging [v3,48/60] arm64: mm: add LPA2 and 5 level paging support to G-to-nG conversion [v3,49/60] arm64: Enable LPA2 at boot if supported by the system [v3,50/60] arm64: mm: Add 5 level paging support to fixmap and swapper handling [v3,51/60] arm64: kasan: Reduce minimum shadow alignment and enable 5 level paging [v3,52/60] arm64: mm: Add support for folding PUDs at runtime [v3,53/60] arm64: ptdump: Disregard unaddressable VA space [v3,54/60] arm64: ptdump: Deal with translation levels folded at runtime [v3,55/60] arm64: kvm: avoid CONFIG_PGTABLE_LEVELS for runtime levels [v3,56/60] arm64: kvm: Limit HYP VA and host S2 range to 48 bits when LPA2 is in effect [v3,57/60] arm64: Enable 52-bit virtual addressing for 4k and 16k granule configs [v3,58/60] arm64: defconfig: Enable LPA2 support [v3,59/60] mm: add arch hook to validate mmap() prot flags [v3,60/60] arm64: mm: add support for WXN memory translation attribute

Commit Message

Ard Biesheuvel March 7, 2023, 2:05 p.m. UTC

  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 7790ee42c68a88d7..728b29549e058e94 100644
--- a/arch/arm64/configs/defconfig
+++ b/arch/arm64/configs/defconfig
@@ -69,7 +69,7 @@  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