[PATCH v3 07/16] x86/opcode: Add immediate form MSR instructions

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From: Juergen Gross <jgross@suse.com>
To: linux-kernel@vger.kernel.org, x86@kernel.org
Cc: Juergen Gross <jgross@suse.com>,
	Thomas Gleixner <tglx@kernel.org>, Ingo Molnar <mingo@redhat.com>,
	Borislav Petkov <bp@alien8.de>,
	Dave Hansen <dave.hansen@linux.intel.com>,
	"H. Peter Anvin" <hpa@zytor.com>,
	"Xin Li (Intel)" <xin@zytor.com>
Subject: [PATCH v3 07/16] x86/opcode: Add immediate form MSR instructions
Date: Wed, 18 Feb 2026 09:21:24 +0100	[thread overview]
Message-ID: <20260218082133.400602-8-jgross@suse.com> (raw)
In-Reply-To: <20260218082133.400602-1-jgross@suse.com>

Add the instruction opcodes used by the immediate form WRMSRNS/RDMSR
to x86-opcode-map.

Signed-off-by: Xin Li (Intel) <xin@zytor.com>
Signed-off-by: Juergen Gross <jgross@suse.com>
Reviewed-by: H. Peter Anvin (Intel) <hpa@zytor.com>
---
V2:
- new patch, taken from the RFC v2 MSR refactor series by Xin Li
---
 arch/x86/lib/x86-opcode-map.txt       | 5 +++--
 tools/arch/x86/lib/x86-opcode-map.txt | 5 +++--
 2 files changed, 6 insertions(+), 4 deletions(-)

diff --git a/arch/x86/lib/x86-opcode-map.txt b/arch/x86/lib/x86-opcode-map.txt
index 2a4e69ecc2de..62f7c90b9a83 100644
--- a/arch/x86/lib/x86-opcode-map.txt
+++ b/arch/x86/lib/x86-opcode-map.txt
@@ -844,7 +844,7 @@ f1: MOVBE My,Gy | MOVBE Mw,Gw (66) | CRC32 Gd,Ey (F2) | CRC32 Gd,Ew (66&F2)
 f2: ANDN Gy,By,Ey (v)
 f3: Grp17 (1A)
 f5: BZHI Gy,Ey,By (v) | PEXT Gy,By,Ey (F3),(v) | PDEP Gy,By,Ey (F2),(v) | WRUSSD/Q My,Gy (66)
-f6: ADCX Gy,Ey (66) | ADOX Gy,Ey (F3) | MULX By,Gy,rDX,Ey (F2),(v) | WRSSD/Q My,Gy
+f6: ADCX Gy,Ey (66) | ADOX Gy,Ey (F3) | MULX By,Gy,rDX,Ey (F2),(v) | WRSSD/Q My,Gy | RDMSR Rq,Gq (F2),(11B) | WRMSRNS Gq,Rq (F3),(11B)
 f7: BEXTR Gy,Ey,By (v) | SHLX Gy,Ey,By (66),(v) | SARX Gy,Ey,By (F3),(v) | SHRX Gy,Ey,By (F2),(v)
 f8: MOVDIR64B Gv,Mdqq (66) | ENQCMD Gv,Mdqq (F2) | ENQCMDS Gv,Mdqq (F3) | URDMSR Rq,Gq (F2),(11B) | UWRMSR Gq,Rq (F3),(11B)
 f9: MOVDIRI My,Gy
@@ -1019,7 +1019,7 @@ f1: CRC32 Gy,Ey (es) | CRC32 Gy,Ey (66),(es) | INVVPID Gy,Mdq (F3),(ev)
 f2: INVPCID Gy,Mdq (F3),(ev)
 f4: TZCNT Gv,Ev (es) | TZCNT Gv,Ev (66),(es)
 f5: LZCNT Gv,Ev (es) | LZCNT Gv,Ev (66),(es)
-f6: Grp3_1 Eb (1A),(ev)
+f6: Grp3_1 Eb (1A),(ev) | RDMSR Rq,Gq (F2),(11B),(ev) | WRMSRNS Gq,Rq (F3),(11B),(ev)
 f7: Grp3_2 Ev (1A),(es)
 f8: MOVDIR64B Gv,Mdqq (66),(ev) | ENQCMD Gv,Mdqq (F2),(ev) | ENQCMDS Gv,Mdqq (F3),(ev) | URDMSR Rq,Gq (F2),(11B),(ev) | UWRMSR Gq,Rq (F3),(11B),(ev)
 f9: MOVDIRI My,Gy (ev)
@@ -1108,6 +1108,7 @@ EndTable
 Table: VEX map 7
 Referrer:
 AVXcode: 7
+f6: RDMSR Rq,Id (F2),(v1),(11B) | WRMSRNS Id,Rq (F3),(v1),(11B)
 f8: URDMSR Rq,Id (F2),(v1),(11B) | UWRMSR Id,Rq (F3),(v1),(11B)
 EndTable
 
diff --git a/tools/arch/x86/lib/x86-opcode-map.txt b/tools/arch/x86/lib/x86-opcode-map.txt
index 2a4e69ecc2de..62f7c90b9a83 100644
--- a/tools/arch/x86/lib/x86-opcode-map.txt
+++ b/tools/arch/x86/lib/x86-opcode-map.txt
@@ -844,7 +844,7 @@ f1: MOVBE My,Gy | MOVBE Mw,Gw (66) | CRC32 Gd,Ey (F2) | CRC32 Gd,Ew (66&F2)
 f2: ANDN Gy,By,Ey (v)
 f3: Grp17 (1A)
 f5: BZHI Gy,Ey,By (v) | PEXT Gy,By,Ey (F3),(v) | PDEP Gy,By,Ey (F2),(v) | WRUSSD/Q My,Gy (66)
-f6: ADCX Gy,Ey (66) | ADOX Gy,Ey (F3) | MULX By,Gy,rDX,Ey (F2),(v) | WRSSD/Q My,Gy
+f6: ADCX Gy,Ey (66) | ADOX Gy,Ey (F3) | MULX By,Gy,rDX,Ey (F2),(v) | WRSSD/Q My,Gy | RDMSR Rq,Gq (F2),(11B) | WRMSRNS Gq,Rq (F3),(11B)
 f7: BEXTR Gy,Ey,By (v) | SHLX Gy,Ey,By (66),(v) | SARX Gy,Ey,By (F3),(v) | SHRX Gy,Ey,By (F2),(v)
 f8: MOVDIR64B Gv,Mdqq (66) | ENQCMD Gv,Mdqq (F2) | ENQCMDS Gv,Mdqq (F3) | URDMSR Rq,Gq (F2),(11B) | UWRMSR Gq,Rq (F3),(11B)
 f9: MOVDIRI My,Gy
@@ -1019,7 +1019,7 @@ f1: CRC32 Gy,Ey (es) | CRC32 Gy,Ey (66),(es) | INVVPID Gy,Mdq (F3),(ev)
 f2: INVPCID Gy,Mdq (F3),(ev)
 f4: TZCNT Gv,Ev (es) | TZCNT Gv,Ev (66),(es)
 f5: LZCNT Gv,Ev (es) | LZCNT Gv,Ev (66),(es)
-f6: Grp3_1 Eb (1A),(ev)
+f6: Grp3_1 Eb (1A),(ev) | RDMSR Rq,Gq (F2),(11B),(ev) | WRMSRNS Gq,Rq (F3),(11B),(ev)
 f7: Grp3_2 Ev (1A),(es)
 f8: MOVDIR64B Gv,Mdqq (66),(ev) | ENQCMD Gv,Mdqq (F2),(ev) | ENQCMDS Gv,Mdqq (F3),(ev) | URDMSR Rq,Gq (F2),(11B),(ev) | UWRMSR Gq,Rq (F3),(11B),(ev)
 f9: MOVDIRI My,Gy (ev)
@@ -1108,6 +1108,7 @@ EndTable
 Table: VEX map 7
 Referrer:
 AVXcode: 7
+f6: RDMSR Rq,Id (F2),(v1),(11B) | WRMSRNS Id,Rq (F3),(v1),(11B)
 f8: URDMSR Rq,Id (F2),(v1),(11B) | UWRMSR Id,Rq (F3),(v1),(11B)
 EndTable
 
-- 
2.53.0

next prev parent reply	other threads:[~2026-02-18  8:22 UTC|newest]

Thread overview: 39+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2026-02-18  8:21 [PATCH v3 00/16] x86/msr: Inline rdmsr/wrmsr instructions Juergen Gross
2026-02-18  8:21 ` [PATCH v3 01/16] x86/alternative: Support alt_replace_call() with instructions after call Juergen Gross
2026-04-02 13:58   ` Juergen Gross
2026-02-18  8:21 ` [PATCH v3 02/16] coco/tdx: Rename MSR access helpers Juergen Gross
2026-02-18 14:11   ` Edgecombe, Rick P
2026-02-18  8:21 ` [PATCH v3 03/16] x86/sev: Replace call of native_wrmsr() with native_wrmsrq() Juergen Gross
2026-02-18  8:21 ` [PATCH v3 04/16] KVM: x86: Remove the KVM private read_msr() function Juergen Gross
2026-02-18 14:21   ` Edgecombe, Rick P
2026-02-18 14:29     ` Sean Christopherson
2026-02-18  8:21 ` [PATCH v3 05/16] x86/msr: Minimize usage of native_*() msr access functions Juergen Gross
2026-02-18  8:21 ` [PATCH v3 06/16] x86/msr: Move MSR trace calls one function level up Juergen Gross
2026-02-18  8:21 ` Juergen Gross [this message]
2026-02-18  8:21 ` [PATCH v3 08/16] x86/extable: Add support for immediate form MSR instructions Juergen Gross
2026-02-18 15:48   ` Andrew Cooper
2026-02-18 16:28     ` Jürgen Groß
2026-02-18  8:21 ` [PATCH v3 09/16] x86/msr: Use the alternatives mechanism for WRMSR Juergen Gross
2026-02-18 21:00   ` Sean Christopherson
2026-02-18 21:37     ` Dave Hansen
2026-02-18 23:36       ` H. Peter Anvin
2026-02-19  6:41         ` Jürgen Groß
2026-02-19  6:44       ` Jürgen Groß
2026-02-20 17:12         ` Xin Li
2026-02-20 17:32           ` Sean Christopherson
2026-02-20 17:40           ` Dave Hansen
2026-02-23 17:56             ` Xin Li
2026-02-23 21:34               ` H. Peter Anvin
2026-02-18  8:21 ` [PATCH v3 10/16] x86/msr: Use the alternatives mechanism for RDMSR Juergen Gross
2026-02-18 15:12   ` kernel test robot
2026-02-18 15:48     ` Juergen Gross
2026-02-18  8:21 ` [PATCH v3 11/16] x86/alternatives: Add ALTERNATIVE_4() Juergen Gross
2026-02-18  8:21 ` [PATCH v3 12/16] x86/paravirt: Split off MSR related hooks into new header Juergen Gross
2026-02-18  8:21 ` [PATCH v3 13/16] x86/paravirt: Prepare support of MSR instruction interfaces Juergen Gross
2026-02-18  8:21 ` [PATCH v3 14/16] x86/paravirt: Switch MSR access pv_ops functions to " Juergen Gross
2026-02-18  8:21 ` [PATCH v3 15/16] x86/msr: Reduce number of low level MSR access helpers Juergen Gross
2026-02-18  8:21 ` [PATCH v3 16/16] x86/paravirt: Use alternatives for MSR access with paravirt Juergen Gross
2026-02-18 13:49   ` kernel test robot
2026-02-18 15:49     ` Juergen Gross
2026-02-18 20:37 ` [PATCH v3 00/16] x86/msr: Inline rdmsr/wrmsr instructions H. Peter Anvin
2026-02-19  6:28   ` Jürgen Groß

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