From: Michael Roth <michael.roth@amd.com>
To: <x86@kernel.org>
Cc: <kvm@vger.kernel.org>, <linux-coco@lists.linux.dev>,
<linux-mm@kvack.org>, <linux-crypto@vger.kernel.org>,
<linux-kernel@vger.kernel.org>, <tglx@linutronix.de>,
<mingo@redhat.com>, <jroedel@suse.de>, <thomas.lendacky@amd.com>,
<hpa@zytor.com>, <ardb@kernel.org>, <pbonzini@redhat.com>,
<seanjc@google.com>, <vkuznets@redhat.com>, <jmattson@google.com>,
<luto@kernel.org>, <dave.hansen@linux.intel.com>,
<slp@redhat.com>, <pgonda@google.com>, <peterz@infradead.org>,
<srinivas.pandruvada@linux.intel.com>, <rientjes@google.com>,
<tobin@ibm.com>, <bp@alien8.de>, <vbabka@suse.cz>,
<kirill@shutemov.name>, <ak@linux.intel.com>,
<tony.luck@intel.com>,
<sathyanarayanan.kuppuswamy@linux.intel.com>,
<alpergun@google.com>, <jarkko@kernel.org>,
<ashish.kalra@amd.com>, <nikunj.dadhania@amd.com>,
<pankaj.gupta@amd.com>, <liam.merwick@oracle.com>,
<zhi.a.wang@intel.com>, Brijesh Singh <brijesh.singh@amd.com>,
Dave Hansen <dave.hansen@intel.com>
Subject: [PATCH v1 08/26] x86/traps: Define RMP violation #PF error code
Date: Sat, 30 Dec 2023 10:19:36 -0600 [thread overview]
Message-ID: <20231230161954.569267-9-michael.roth@amd.com> (raw)
In-Reply-To: <20231230161954.569267-1-michael.roth@amd.com>
From: Brijesh Singh <brijesh.singh@amd.com>
Bit 31 in the page fault-error bit will be set when processor encounters
an RMP violation.
While at it, use the BIT() macro.
Signed-off-by: Brijesh Singh <brijesh.singh@amd.com>
Signed-off by: Ashish Kalra <ashish.kalra@amd.com>
Acked-by: Dave Hansen <dave.hansen@intel.com>
Signed-off-by: Michael Roth <michael.roth@amd.com>
---
arch/x86/include/asm/trap_pf.h | 20 ++++++++++++--------
arch/x86/mm/fault.c | 1 +
2 files changed, 13 insertions(+), 8 deletions(-)
diff --git a/arch/x86/include/asm/trap_pf.h b/arch/x86/include/asm/trap_pf.h
index afa524325e55..7fc4db774dd6 100644
--- a/arch/x86/include/asm/trap_pf.h
+++ b/arch/x86/include/asm/trap_pf.h
@@ -2,6 +2,8 @@
#ifndef _ASM_X86_TRAP_PF_H
#define _ASM_X86_TRAP_PF_H
+#include <linux/bits.h> /* BIT() macro */
+
/*
* Page fault error code bits:
*
@@ -13,16 +15,18 @@
* bit 5 == 1: protection keys block access
* bit 6 == 1: shadow stack access fault
* bit 15 == 1: SGX MMU page-fault
+ * bit 31 == 1: fault was due to RMP violation
*/
enum x86_pf_error_code {
- X86_PF_PROT = 1 << 0,
- X86_PF_WRITE = 1 << 1,
- X86_PF_USER = 1 << 2,
- X86_PF_RSVD = 1 << 3,
- X86_PF_INSTR = 1 << 4,
- X86_PF_PK = 1 << 5,
- X86_PF_SHSTK = 1 << 6,
- X86_PF_SGX = 1 << 15,
+ X86_PF_PROT = BIT(0),
+ X86_PF_WRITE = BIT(1),
+ X86_PF_USER = BIT(2),
+ X86_PF_RSVD = BIT(3),
+ X86_PF_INSTR = BIT(4),
+ X86_PF_PK = BIT(5),
+ X86_PF_SHSTK = BIT(6),
+ X86_PF_SGX = BIT(15),
+ X86_PF_RMP = BIT(31),
};
#endif /* _ASM_X86_TRAP_PF_H */
diff --git a/arch/x86/mm/fault.c b/arch/x86/mm/fault.c
index ab778eac1952..7858b9515d4a 100644
--- a/arch/x86/mm/fault.c
+++ b/arch/x86/mm/fault.c
@@ -547,6 +547,7 @@ show_fault_oops(struct pt_regs *regs, unsigned long error_code, unsigned long ad
!(error_code & X86_PF_PROT) ? "not-present page" :
(error_code & X86_PF_RSVD) ? "reserved bit violation" :
(error_code & X86_PF_PK) ? "protection keys violation" :
+ (error_code & X86_PF_RMP) ? "RMP violation" :
"permissions violation");
if (!(error_code & X86_PF_USER) && user_mode(regs)) {
--
2.25.1
next prev parent reply other threads:[~2023-12-30 16:21 UTC|newest]
Thread overview: 102+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-12-30 16:19 [PATCH v1 00/26] Add AMD Secure Nested Paging (SEV-SNP) Initialization Support Michael Roth
2023-12-30 16:19 ` [PATCH v1 01/26] x86/cpufeatures: Add SEV-SNP CPU feature Michael Roth
2023-12-31 11:50 ` Borislav Petkov
2023-12-31 16:44 ` Michael Roth
2023-12-30 16:19 ` [PATCH v1 02/26] x86/speculation: Do not enable Automatic IBRS if SEV SNP is enabled Michael Roth
2023-12-30 16:19 ` [PATCH v1 03/26] iommu/amd: Don't rely on external callers to enable IOMMU SNP support Michael Roth
2024-01-04 10:30 ` Borislav Petkov
2024-01-04 10:58 ` Joerg Roedel
2023-12-30 16:19 ` [PATCH v1 04/26] x86/sev: Add the host SEV-SNP initialization support Michael Roth
2024-01-04 11:05 ` Jeremi Piotrowski
2024-01-05 16:09 ` Borislav Petkov
2024-01-05 16:21 ` Borislav Petkov
2024-01-08 16:49 ` Jeremi Piotrowski
2024-01-08 17:04 ` Borislav Petkov
2024-01-09 11:56 ` Jeremi Piotrowski
2024-01-09 12:29 ` Borislav Petkov
2024-01-09 12:44 ` Borislav Petkov
2024-02-14 16:56 ` Jeremi Piotrowski
2024-01-04 11:16 ` Borislav Petkov
2024-01-04 14:42 ` Borislav Petkov
2024-01-05 19:19 ` Borislav Petkov
2024-01-05 21:27 ` Borislav Petkov
2023-12-30 16:19 ` [PATCH v1 05/26] x86/mtrr: Don't print errors if MtrrFixDramModEn is set when SNP enabled Michael Roth
2023-12-30 16:19 ` [PATCH v1 06/26] x86/sev: Add RMP entry lookup helpers Michael Roth
2023-12-30 16:19 ` [PATCH v1 07/26] x86/fault: Add helper for dumping RMP entries Michael Roth
2024-01-10 9:59 ` Borislav Petkov
2024-01-10 20:18 ` Jarkko Sakkinen
2024-01-10 22:14 ` Borislav Petkov
2024-01-10 11:13 ` Borislav Petkov
2024-01-10 15:20 ` Tom Lendacky
2024-01-10 15:27 ` Borislav Petkov
2024-01-10 15:51 ` Tom Lendacky
2024-01-10 15:55 ` Borislav Petkov
2024-01-10 15:10 ` Tom Lendacky
2023-12-30 16:19 ` Michael Roth [this message]
2023-12-30 16:19 ` [PATCH v1 09/26] x86/fault: Dump RMP table information when RMP page faults occur Michael Roth
2023-12-30 16:19 ` [PATCH v1 10/26] x86/sev: Add helper functions for RMPUPDATE and PSMASH instruction Michael Roth
2024-01-12 14:49 ` Borislav Petkov
2023-12-30 16:19 ` [PATCH v1 11/26] x86/sev: Invalidate pages from the direct map when adding them to the RMP table Michael Roth
2024-01-12 19:48 ` Borislav Petkov
2024-01-12 20:00 ` Dave Hansen
2024-01-12 20:07 ` Borislav Petkov
2024-01-12 20:27 ` Vlastimil Babka
2024-01-15 9:06 ` Borislav Petkov
2024-01-15 9:14 ` Vlastimil Babka
2024-01-15 9:16 ` Mike Rapoport
2024-01-15 9:20 ` Borislav Petkov
2024-01-12 20:28 ` Tom Lendacky
2024-01-12 20:37 ` Dave Hansen
2024-01-15 9:23 ` Vlastimil Babka
2024-01-16 16:19 ` Michael Roth
2024-01-16 16:50 ` Michael Roth
2024-01-16 20:12 ` Mike Rapoport
2024-01-26 1:49 ` Michael Roth
2024-01-16 18:22 ` Borislav Petkov
2024-01-16 20:22 ` Dave Hansen
2024-01-26 1:35 ` Michael Roth
2024-01-15 9:09 ` Borislav Petkov
2024-01-16 16:21 ` Dave Hansen
2024-01-17 9:34 ` Borislav Petkov
2024-01-15 9:01 ` Borislav Petkov
2023-12-30 16:19 ` [PATCH v1 12/26] crypto: ccp: Define the SEV-SNP commands Michael Roth
2024-01-15 9:41 ` Borislav Petkov
2024-01-26 1:56 ` Michael Roth
2023-12-30 16:19 ` [PATCH v1 13/26] crypto: ccp: Add support to initialize the AMD-SP for SEV-SNP Michael Roth
2024-01-15 11:19 ` Borislav Petkov
2024-01-15 19:53 ` Borislav Petkov
2024-01-26 2:48 ` Michael Roth
2023-12-30 16:19 ` [PATCH v1 14/26] crypto: ccp: Provide API to issue SEV and SNP commands Michael Roth
2024-01-17 9:48 ` Borislav Petkov
2023-12-30 16:19 ` [PATCH v1 15/26] x86/sev: Introduce snp leaked pages list Michael Roth
2024-01-08 10:45 ` Vlastimil Babka
2024-01-09 22:19 ` Kalra, Ashish
2024-01-10 8:59 ` Vlastimil Babka
2023-12-30 16:19 ` [PATCH v1 16/26] crypto: ccp: Handle the legacy TMR allocation when SNP is enabled Michael Roth
2023-12-30 16:19 ` [PATCH v1 17/26] crypto: ccp: Handle non-volatile INIT_EX data " Michael Roth
2024-01-18 14:03 ` Borislav Petkov
2023-12-30 16:19 ` [PATCH v1 18/26] crypto: ccp: Handle legacy SEV commands " Michael Roth
2024-01-19 17:18 ` Borislav Petkov
2024-01-19 17:36 ` Tom Lendacky
2024-01-19 17:48 ` Borislav Petkov
2024-01-26 13:29 ` Michael Roth
2023-12-30 16:19 ` [PATCH v1 19/26] iommu/amd: Clean up RMP entries for IOMMU pages during SNP shutdown Michael Roth
2023-12-30 16:19 ` [PATCH v1 20/26] crypto: ccp: Add debug support for decrypting pages Michael Roth
2024-01-10 14:59 ` Sean Christopherson
2024-01-11 0:50 ` Michael Roth
2023-12-30 16:19 ` [PATCH v1 21/26] crypto: ccp: Add panic notifier for SEV/SNP firmware shutdown on kdump Michael Roth
2024-01-21 11:49 ` Borislav Petkov
2024-01-26 3:03 ` Kalra, Ashish
2024-01-26 13:38 ` Michael Roth
2023-12-30 16:19 ` [PATCH v1 22/26] KVM: SEV: Make AVIC backing, VMSA and VMCB memory allocation SNP safe Michael Roth
2024-01-21 11:51 ` Borislav Petkov
2024-01-26 3:44 ` Michael Roth
2023-12-30 16:19 ` [PATCH v1 23/26] x86/cpufeatures: Enable/unmask SEV-SNP CPU feature Michael Roth
2023-12-30 16:19 ` [PATCH v1 24/26] crypto: ccp: Add the SNP_PLATFORM_STATUS command Michael Roth
2024-01-21 12:29 ` Borislav Petkov
2024-01-26 3:32 ` Michael Roth
2023-12-30 16:19 ` [PATCH v1 25/26] crypto: ccp: Add the SNP_COMMIT command Michael Roth
2024-01-21 12:35 ` Borislav Petkov
2023-12-30 16:19 ` [PATCH v1 26/26] crypto: ccp: Add the SNP_SET_CONFIG command Michael Roth
2024-01-21 12:41 ` Borislav Petkov
2024-01-26 13:30 ` Michael Roth
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20231230161954.569267-9-michael.roth@amd.com \
--to=michael.roth@amd.com \
--cc=ak@linux.intel.com \
--cc=alpergun@google.com \
--cc=ardb@kernel.org \
--cc=ashish.kalra@amd.com \
--cc=bp@alien8.de \
--cc=brijesh.singh@amd.com \
--cc=dave.hansen@intel.com \
--cc=dave.hansen@linux.intel.com \
--cc=hpa@zytor.com \
--cc=jarkko@kernel.org \
--cc=jmattson@google.com \
--cc=jroedel@suse.de \
--cc=kirill@shutemov.name \
--cc=kvm@vger.kernel.org \
--cc=liam.merwick@oracle.com \
--cc=linux-coco@lists.linux.dev \
--cc=linux-crypto@vger.kernel.org \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-mm@kvack.org \
--cc=luto@kernel.org \
--cc=mingo@redhat.com \
--cc=nikunj.dadhania@amd.com \
--cc=pankaj.gupta@amd.com \
--cc=pbonzini@redhat.com \
--cc=peterz@infradead.org \
--cc=pgonda@google.com \
--cc=rientjes@google.com \
--cc=sathyanarayanan.kuppuswamy@linux.intel.com \
--cc=seanjc@google.com \
--cc=slp@redhat.com \
--cc=srinivas.pandruvada@linux.intel.com \
--cc=tglx@linutronix.de \
--cc=thomas.lendacky@amd.com \
--cc=tobin@ibm.com \
--cc=tony.luck@intel.com \
--cc=vbabka@suse.cz \
--cc=vkuznets@redhat.com \
--cc=x86@kernel.org \
--cc=zhi.a.wang@intel.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).