From: Reiji Watanabe <reijiw@google.com>
To: Marc Zyngier <maz@kernel.org>, kvmarm@lists.cs.columbia.edu
Cc: kvm@vger.kernel.org, linux-arm-kernel@lists.infradead.org,
James Morse <james.morse@arm.com>,
Alexandru Elisei <alexandru.elisei@arm.com>,
Suzuki K Poulose <suzuki.poulose@arm.com>,
Paolo Bonzini <pbonzini@redhat.com>,
Will Deacon <will@kernel.org>, Andrew Jones <drjones@redhat.com>,
Fuad Tabba <tabba@google.com>,
Peng Liang <liangpeng10@huawei.com>,
Peter Shier <pshier@google.com>,
Ricardo Koller <ricarkol@google.com>,
Oliver Upton <oupton@google.com>,
Jing Zhang <jingzhangos@google.com>,
Raghavendra Rao Anata <rananta@google.com>,
Reiji Watanabe <reijiw@google.com>
Subject: [PATCH v7 17/38] KVM: arm64: KVM: arm64: Make ID_MMFR0_EL1 writable
Date: Mon, 18 Apr 2022 23:55:23 -0700 [thread overview]
Message-ID: <20220419065544.3616948-18-reijiw@google.com> (raw)
In-Reply-To: <20220419065544.3616948-1-reijiw@google.com>
This patch adds id_reg_desc for ID_MMFR0_EL1 to make it writable
by userspace.
Signed-off-by: Reiji Watanabe <reijiw@google.com>
---
arch/arm64/kvm/sys_regs.c | 9 +++++++++
1 file changed, 9 insertions(+)
diff --git a/arch/arm64/kvm/sys_regs.c b/arch/arm64/kvm/sys_regs.c
index 3892278deb09..dfcf95eee139 100644
--- a/arch/arm64/kvm/sys_regs.c
+++ b/arch/arm64/kvm/sys_regs.c
@@ -4149,6 +4149,14 @@ static struct id_reg_desc id_dfr1_el1_desc = {
},
};
+static struct id_reg_desc id_mmfr0_el1_desc = {
+ .reg_desc = ID_SANITISED(ID_MMFR0_EL1),
+ .ftr_bits = {
+ S_FTR_BITS(FTR_LOWER_SAFE, ID_MMFR0_OUTERSHR_SHIFT, 0xf),
+ S_FTR_BITS(FTR_LOWER_SAFE, ID_MMFR0_INNERSHR_SHIFT, 0xf),
+ },
+};
+
#define ID_DESC(id_reg_name, id_reg_desc) \
[IDREG_IDX(SYS_##id_reg_name)] = (id_reg_desc)
@@ -4156,6 +4164,7 @@ static struct id_reg_desc id_dfr1_el1_desc = {
static struct id_reg_desc *id_reg_desc_table[KVM_ARM_ID_REG_MAX_NUM] = {
/* CRm=1 */
ID_DESC(ID_DFR0_EL1, &id_dfr0_el1_desc),
+ ID_DESC(ID_MMFR0_EL1, &id_mmfr0_el1_desc),
/* CRm=3 */
ID_DESC(ID_DFR1_EL1, &id_dfr1_el1_desc),
--
2.36.0.rc0.470.gd361397f0d-goog
_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
next prev parent reply other threads:[~2022-04-19 7:06 UTC|newest]
Thread overview: 41+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-04-19 6:55 [PATCH v7 00/38] KVM: arm64: Make CPU ID registers writable by userspace Reiji Watanabe
2022-04-19 6:55 ` [PATCH v7 01/38] KVM: arm64: Introduce a validation function for an ID register Reiji Watanabe
2022-05-04 6:35 ` Oliver Upton
2022-06-01 6:16 ` Reiji Watanabe
2022-04-19 6:55 ` [PATCH v7 02/38] KVM: arm64: Save ID registers' sanitized value per guest Reiji Watanabe
2022-04-19 6:55 ` [PATCH v7 03/38] KVM: arm64: Introduce struct id_reg_desc Reiji Watanabe
2022-04-19 6:55 ` [PATCH v7 04/38] KVM: arm64: Generate id_reg_desc's ftr_bits at KVM init when needed Reiji Watanabe
2022-04-19 6:55 ` [PATCH v7 05/38] KVM: arm64: Prohibit modifying values of ID regs for 32bit EL1 guests Reiji Watanabe
2022-04-19 6:55 ` [PATCH v7 06/38] KVM: arm64: Make ID_AA64PFR0_EL1 writable Reiji Watanabe
2022-04-19 6:55 ` [PATCH v7 07/38] KVM: arm64: Make ID_AA64PFR1_EL1 writable Reiji Watanabe
2022-04-19 6:55 ` [PATCH v7 08/38] KVM: arm64: Make ID_AA64ISAR0_EL1 writable Reiji Watanabe
2022-04-19 6:55 ` [PATCH v7 09/38] KVM: arm64: Make ID_AA64ISAR1_EL1 writable Reiji Watanabe
2022-04-19 6:55 ` [PATCH v7 10/38] KVM: arm64: Make ID_AA64ISAR2_EL1 writable Reiji Watanabe
2022-04-19 6:55 ` [PATCH v7 11/38] KVM: arm64: Make ID_AA64MMFR0_EL1 writable Reiji Watanabe
2022-04-19 6:55 ` [PATCH v7 12/38] KVM: arm64: Add a KVM flag indicating emulating debug regs access is needed Reiji Watanabe
2022-04-19 6:55 ` [PATCH v7 13/38] KVM: arm64: Emulate dbgbcr/dbgbvr accesses Reiji Watanabe
2022-04-19 6:55 ` [PATCH v7 14/38] KVM: arm64: Emulate dbgwcr accesses Reiji Watanabe
2022-04-19 6:55 ` [PATCH v7 15/38] KVM: arm64: Make ID_AA64DFR0_EL1/ID_DFR0_EL1 writable Reiji Watanabe
2022-04-19 6:55 ` [PATCH v7 16/38] KVM: arm64: KVM: arm64: Make ID_DFR1_EL1 writable Reiji Watanabe
2022-04-19 6:55 ` Reiji Watanabe [this message]
2022-04-19 6:55 ` [PATCH v7 18/38] KVM: arm64: Make MVFR1_EL1 writable Reiji Watanabe
2022-04-19 6:55 ` [PATCH v7 19/38] KVM: arm64: Add remaining ID registers to id_reg_desc_table Reiji Watanabe
2022-04-19 6:55 ` [PATCH v7 20/38] KVM: arm64: Use id_reg_desc_table for ID registers Reiji Watanabe
2022-04-19 6:55 ` [PATCH v7 21/38] KVM: arm64: Add consistency checking for frac fields of " Reiji Watanabe
2022-04-19 6:55 ` [PATCH v7 22/38] KVM: arm64: Introduce KVM_CAP_ARM_ID_REG_CONFIGURABLE capability Reiji Watanabe
2022-04-19 6:55 ` [PATCH v7 23/38] KVM: arm64: Add kunit test for ID register validation Reiji Watanabe
2022-04-19 6:55 ` [PATCH v7 24/38] KVM: arm64: Use vcpu->arch cptr_el2 to track value of cptr_el2 for VHE Reiji Watanabe
2022-04-19 6:55 ` [PATCH v7 25/38] KVM: arm64: Use vcpu->arch.mdcr_el2 to track value of mdcr_el2 Reiji Watanabe
2022-04-19 6:55 ` [PATCH v7 26/38] KVM: arm64: Introduce framework to trap disabled features Reiji Watanabe
2022-04-19 6:55 ` [PATCH v7 27/38] KVM: arm64: Trap disabled features of ID_AA64PFR0_EL1 Reiji Watanabe
2022-04-19 6:55 ` [PATCH v7 28/38] KVM: arm64: Trap disabled features of ID_AA64PFR1_EL1 Reiji Watanabe
2022-04-19 6:55 ` [PATCH v7 29/38] KVM: arm64: Trap disabled features of ID_AA64DFR0_EL1 Reiji Watanabe
2022-04-19 6:55 ` [PATCH v7 30/38] KVM: arm64: Trap disabled features of ID_AA64MMFR1_EL1 Reiji Watanabe
2022-04-19 6:55 ` [PATCH v7 31/38] KVM: arm64: Trap disabled features of ID_AA64ISAR1_EL1 Reiji Watanabe
2022-04-19 6:55 ` [PATCH v7 32/38] KVM: arm64: Add kunit test for trap initialization Reiji Watanabe
2022-04-19 6:55 ` [PATCH v7 33/38] KVM: arm64: selftests: Add helpers to extract a field of ID registers Reiji Watanabe
2022-04-19 6:55 ` [PATCH v7 34/38] KVM: arm64: selftests: Introduce id_reg_test Reiji Watanabe
2022-04-19 6:55 ` [PATCH v7 35/38] KVM: arm64: selftests: Test linked breakpoint and watchpoint Reiji Watanabe
2022-04-19 6:55 ` [PATCH v7 36/38] KVM: arm64: selftests: Test breakpoint/watchpoint register access Reiji Watanabe
2022-04-19 6:55 ` [PATCH v7 37/38] KVM: arm64: selftests: Test with every breakpoint/watchpoint Reiji Watanabe
2022-04-19 6:55 ` [PATCH v7 38/38] KVM: arm64: selftests: Test breakpoint/watchpoint changing ID_AA64DFR0_EL1 Reiji Watanabe
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=20220419065544.3616948-18-reijiw@google.com \
--to=reijiw@google.com \
--cc=alexandru.elisei@arm.com \
--cc=drjones@redhat.com \
--cc=james.morse@arm.com \
--cc=jingzhangos@google.com \
--cc=kvm@vger.kernel.org \
--cc=kvmarm@lists.cs.columbia.edu \
--cc=liangpeng10@huawei.com \
--cc=linux-arm-kernel@lists.infradead.org \
--cc=maz@kernel.org \
--cc=oupton@google.com \
--cc=pbonzini@redhat.com \
--cc=pshier@google.com \
--cc=rananta@google.com \
--cc=ricarkol@google.com \
--cc=suzuki.poulose@arm.com \
--cc=tabba@google.com \
--cc=will@kernel.org \
/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).