linux-kernel - [PATCH v6 05/20] kvm: arm64: Handle access to TRFCR

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

Message-Id: <20210405164307.1720226-6-suzuki.poulose@arm.com>
Date:   Mon,  5 Apr 2021 17:42:52 +0100
From:   Suzuki K Poulose <suzuki.poulose@....com>
To:     maz@...nel.org, mathieu.poirier@...aro.org
Cc:     coresight@...ts.linaro.org, linux-arm-kernel@...ts.infradead.org,
        linux-kernel@...r.kernel.org, anshuman.khandual@....com,
        mike.leach@...aro.org, catalin.marinas@....com, will@...nel.org,
        peterz@...radead.org, leo.yan@...aro.org, robh@...nel.org,
        Suzuki K Poulose <suzuki.poulose@....com>
Subject: [PATCH v6 05/20] kvm: arm64: Handle access to TRFCR_EL1

Rather than falling to an "unhandled access", inject add an explicit
"undefined access" for TRFCR_EL1 access from the guest.

Cc: Marc Zyngier <maz@...nel.org>
Cc: Will Deacon <will@...nel.org>
Cc: Mathieu Poirier <mathieu.poirier@...aro.org>
Signed-off-by: Suzuki K Poulose <suzuki.poulose@....com>
---
 arch/arm64/kvm/sys_regs.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/arch/arm64/kvm/sys_regs.c b/arch/arm64/kvm/sys_regs.c
index 4f2f1e3145de..52fdb9a015a4 100644
--- a/arch/arm64/kvm/sys_regs.c
+++ b/arch/arm64/kvm/sys_regs.c
@@ -1472,6 +1472,7 @@ static const struct sys_reg_desc sys_reg_descs[] = {
 	{ SYS_DESC(SYS_GCR_EL1), undef_access },
 
 	{ SYS_DESC(SYS_ZCR_EL1), NULL, reset_val, ZCR_EL1, 0, .visibility = sve_visibility },
+	{ SYS_DESC(SYS_TRFCR_EL1), undef_access },
 	{ SYS_DESC(SYS_TTBR0_EL1), access_vm_reg, reset_unknown, TTBR0_EL1 },
 	{ SYS_DESC(SYS_TTBR1_EL1), access_vm_reg, reset_unknown, TTBR1_EL1 },
 	{ SYS_DESC(SYS_TCR_EL1), access_vm_reg, reset_val, TCR_EL1, 0 },
-- 
2.24.1