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From: Brendan Jackman <jackmanb@google.com>
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	linux-efi@vger.kernel.org,  Brendan Jackman <jackmanb@google.com>
Subject: [PATCH RFC v2 29/29] mm: asi: Stop ignoring asi=on cmdline flag
Date: Fri, 10 Jan 2025 18:40:55 +0000	[thread overview]
Message-ID: <20250110-asi-rfc-v2-v2-29-8419288bc805@google.com> (raw)
In-Reply-To: <20250110-asi-rfc-v2-v2-0-8419288bc805@google.com>

At this point the minimum requirements are in place for the kernel to
operate correctly with ASI enabled.

Signed-off-by: Brendan Jackman <jackmanb@google.com>
---
 arch/x86/mm/asi.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/arch/x86/mm/asi.c b/arch/x86/mm/asi.c
index f10f6614b26148e5ba423d8a44f640674573ee40..3e3956326936ea8550308ad004dbbb3738546f9f 100644
--- a/arch/x86/mm/asi.c
+++ b/arch/x86/mm/asi.c
@@ -207,14 +207,14 @@ void __init asi_check_boottime_disable(void)
 		pr_info("ASI disabled through kernel command line.\n");
 	} else if (ret == 2 && !strncmp(arg, "on", 2)) {
 		enabled = true;
-		pr_info("Ignoring asi=on param while ASI implementation is incomplete.\n");
+		pr_info("ASI enabled through kernel command line.\n");
 	} else {
 		pr_info("ASI %s by default.\n",
 			enabled ? "enabled" : "disabled");
 	}
 
 	if (enabled)
-		pr_info("ASI enablement ignored due to incomplete implementation.\n");
+		setup_force_cpu_cap(X86_FEATURE_ASI);
 }
 
 /*

-- 
2.47.1.613.gc27f4b7a9f-goog



      parent reply	other threads:[~2025-01-10 18:42 UTC|newest]

Thread overview: 56+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2025-01-10 18:40 [PATCH RFC v2 00/29] Address Space Isolation (ASI) Brendan Jackman
2025-01-10 18:40 ` [PATCH RFC v2 01/29] mm: asi: Make some utility functions noinstr compatible Brendan Jackman
2025-01-16  0:18   ` Borislav Petkov
2025-01-16 10:27     ` Borislav Petkov
2025-01-16 13:22       ` Brendan Jackman
2025-01-16 14:02         ` Borislav Petkov
2025-01-10 18:40 ` [PATCH RFC v2 02/29] x86: Create CONFIG_MITIGATION_ADDRESS_SPACE_ISOLATION Brendan Jackman
2025-01-16 16:43   ` Borislav Petkov
2025-03-01  7:23   ` Mike Rapoport
2025-03-05 13:12     ` Brendan Jackman
2025-01-10 18:40 ` [PATCH RFC v2 03/29] mm: asi: Introduce ASI core API Brendan Jackman
2025-02-19 10:55   ` Borislav Petkov
2025-02-19 13:50     ` Brendan Jackman
2025-02-19 13:53     ` Brendan Jackman
2025-02-27 12:06       ` Borislav Petkov
2025-02-28  8:43         ` Brendan Jackman
2025-03-14 13:14           ` Borislav Petkov
2025-03-15  1:34             ` Junaid Shahid
2025-03-15 12:36               ` Borislav Petkov
2025-03-17 11:40                 ` Brendan Jackman
2025-03-18  0:50                   ` Junaid Shahid
2025-03-18 13:03                     ` Brendan Jackman
2025-03-18 22:48                       ` Junaid Shahid
2025-03-19 15:23                         ` Borislav Petkov
2025-01-10 18:40 ` [PATCH RFC v2 04/29] mm: asi: Add infrastructure for boot-time enablement Brendan Jackman
2025-03-19 17:29   ` Borislav Petkov
2025-03-19 18:47     ` Yosry Ahmed
2025-03-20 10:44       ` Brendan Jackman
2025-01-10 18:40 ` [PATCH RFC v2 05/29] mm: asi: ASI support in interrupts/exceptions Brendan Jackman
2025-01-10 18:40 ` [PATCH RFC v2 06/29] mm: asi: Use separate PCIDs for restricted address spaces Brendan Jackman
2025-01-10 18:40 ` [PATCH RFC v2 07/29] mm: asi: Make __get_current_cr3_fast() ASI-aware Brendan Jackman
2025-01-10 18:40 ` [PATCH RFC v2 08/29] mm: asi: Avoid warning from NMI userspace accesses in ASI context Brendan Jackman
2025-01-10 18:40 ` [PATCH RFC v2 09/29] mm: asi: ASI page table allocation functions Brendan Jackman
2025-01-10 18:40 ` [PATCH RFC v2 10/29] mm: asi: asi_exit() on PF, skip handling if address is accessible Brendan Jackman
2025-01-10 18:40 ` [PATCH RFC v2 11/29] mm: asi: Functions to map/unmap a memory range into ASI page tables Brendan Jackman
2025-01-10 18:40 ` [PATCH RFC v2 12/29] mm: asi: Add basic infrastructure for global non-sensitive mappings Brendan Jackman
2025-01-10 18:40 ` [PATCH RFC v2 13/29] mm: Add __PAGEFLAG_FALSE Brendan Jackman
2025-01-10 18:40 ` [PATCH RFC v2 14/29] mm: asi: Map non-user buddy allocations as nonsensitive Brendan Jackman
2025-01-10 18:40 ` [PATCH TEMP WORKAROUND RFC v2 15/29] mm: asi: Workaround missing partial-unmap support Brendan Jackman
2025-01-10 18:40 ` [PATCH RFC v2 16/29] mm: asi: Map kernel text and static data as nonsensitive Brendan Jackman
2025-01-17 11:23   ` Brendan Jackman
2025-01-10 18:40 ` [PATCH RFC v2 17/29] mm: asi: Map vmalloc/vmap " Brendan Jackman
2025-01-10 18:40 ` [PATCH RFC v2 18/29] mm: asi: Map dynamic percpu memory " Brendan Jackman
2025-01-10 18:40 ` [PATCH RFC v2 19/29] mm: asi: Stabilize CR3 in switch_mm_irqs_off() Brendan Jackman
2025-01-10 18:40 ` [PATCH RFC v2 20/29] mm: asi: Make TLB flushing correct under ASI Brendan Jackman
2025-01-10 18:40 ` [PATCH RFC v2 21/29] KVM: x86: asi: Restricted address space for VM execution Brendan Jackman
2025-01-10 18:40 ` [PATCH RFC v2 22/29] mm: asi: exit ASI before accessing CR3 from C code where appropriate Brendan Jackman
2025-01-10 18:40 ` [PATCH RFC v2 23/29] mm: asi: exit ASI before suspend-like operations Brendan Jackman
2025-01-10 18:40 ` [PATCH RFC v2 24/29] mm: asi: Add infrastructure for mapping userspace addresses Brendan Jackman
2025-01-10 18:40 ` [PATCH RFC v2 25/29] mm: asi: Restricted execution fore bare-metal processes Brendan Jackman
2025-02-28 15:32   ` Yosry Ahmed
2025-03-20 15:55   ` Brendan Jackman
2025-01-10 18:40 ` [PATCH RFC v2 26/29] x86: Create library for flushing L1D for L1TF Brendan Jackman
2025-01-10 18:40 ` [PATCH RFC v2 27/29] mm: asi: Add some mitigations on address space transitions Brendan Jackman
2025-01-10 18:40 ` [PATCH RFC v2 28/29] x86/pti: Disable PTI when ASI is on Brendan Jackman
2025-01-10 18:40 ` Brendan Jackman [this message]

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