linux-kernel - [PATCH] KVM: arm64: Make HCX writable from userspace

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [thread-next>] [day] [month] [year] [list]

Message-ID: <20250325121126.1380681-1-yangjinqian1@huawei.com>
Date: Tue, 25 Mar 2025 20:11:26 +0800
From: Jinqian Yang <yangjinqian1@...wei.com>
To: <maz@...nel.org>, <oliver.upton@...ux.dev>, <yuzenghui@...wei.com>
CC: <linux-arm-kernel@...ts.infradead.org>, <kvmarm@...ts.linux.dev>,
	<linux-kernel@...r.kernel.org>, <wangzhou1@...ilicon.com>,
	<shameerali.kolothum.thodi@...wei.com>, <liuyonglong@...wei.com>,
	<jiangkunkun@...wei.com>, <yangjinqian1@...wei.com>
Subject: [PATCH] KVM: arm64: Make HCX writable from userspace

Allow userspace to modify guest visible value for HCX in
ID_AA64MMFR1_EL1.

Signed-off-by: Jinqian Yang <yangjinqian1@...wei.com>
---
 arch/arm64/kvm/sys_regs.c | 1 -
 1 file changed, 1 deletion(-)

diff --git a/arch/arm64/kvm/sys_regs.c b/arch/arm64/kvm/sys_regs.c
index 82430c1e1dd0..b105f156bdf6 100644
--- a/arch/arm64/kvm/sys_regs.c
+++ b/arch/arm64/kvm/sys_regs.c
@@ -2666,7 +2666,6 @@ static const struct sys_reg_desc sys_reg_descs[] = {
 					ID_AA64MMFR0_EL1_TGRAN16_2 |
 					ID_AA64MMFR0_EL1_ASIDBITS)),
 	ID_WRITABLE(ID_AA64MMFR1_EL1, ~(ID_AA64MMFR1_EL1_RES0 |
-					ID_AA64MMFR1_EL1_HCX |
 					ID_AA64MMFR1_EL1_TWED |
 					ID_AA64MMFR1_EL1_XNX |
 					ID_AA64MMFR1_EL1_VH |
-- 
2.33.0