From: Peter Maydell <peter.maydell@linaro.org>
To: qemu-arm@nongnu.org, qemu-devel@nongnu.org
Subject: [PATCH 3/7] target/arm: Implement HCR_EL2.TTLBIS traps
Date: Fri, 28 Oct 2022 14:39:58 +0100 [thread overview]
Message-ID: <20221028134002.730598-4-peter.maydell@linaro.org> (raw)
In-Reply-To: <20221028134002.730598-1-peter.maydell@linaro.org>
For FEAT_EVT, the HCR_EL2.TTLBIS bit allows trapping on EL1 use of
TLB maintenance instructions that operate on the inner shareable
domain:
AArch64:
TLBI VMALLE1IS, TLBI VAE1IS, TLBI ASIDE1IS, TLBI VAAE1IS,
TLBI VALE1IS, TLBI VAALE1IS, TLBI RVAE1IS, TLBI RVAAE1IS,
TLBI RVALE1IS, and TLBI RVAALE1IS.
AArch32:
TLBIALLIS, TLBIMVAIS, TLBIASIDIS, TLBIMVAAIS, TLBIMVALIS,
and TLBIMVAALIS.
Add the trapping support.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
---
target/arm/helper.c | 43 +++++++++++++++++++++++++++----------------
1 file changed, 27 insertions(+), 16 deletions(-)
diff --git a/target/arm/helper.c b/target/arm/helper.c
index 8e358d32033..dcd3af6e7d9 100644
--- a/target/arm/helper.c
+++ b/target/arm/helper.c
@@ -362,6 +362,17 @@ static CPAccessResult access_ttlb(CPUARMState *env, const ARMCPRegInfo *ri,
return CP_ACCESS_OK;
}
+/* Check for traps from EL1 due to HCR_EL2.TTLB or TTLBIS. */
+static CPAccessResult access_ttlbis(CPUARMState *env, const ARMCPRegInfo *ri,
+ bool isread)
+{
+ if (arm_current_el(env) == 1 &&
+ (arm_hcr_el2_eff(env) & (HCR_TTLB | HCR_TTLBIS))) {
+ return CP_ACCESS_TRAP_EL2;
+ }
+ return CP_ACCESS_OK;
+}
+
static void dacr_write(CPUARMState *env, const ARMCPRegInfo *ri, uint64_t value)
{
ARMCPU *cpu = env_archcpu(env);
@@ -2206,16 +2217,16 @@ static const ARMCPRegInfo v7_cp_reginfo[] = {
static const ARMCPRegInfo v7mp_cp_reginfo[] = {
/* 32 bit TLB invalidates, Inner Shareable */
{ .name = "TLBIALLIS", .cp = 15, .opc1 = 0, .crn = 8, .crm = 3, .opc2 = 0,
- .type = ARM_CP_NO_RAW, .access = PL1_W, .accessfn = access_ttlb,
+ .type = ARM_CP_NO_RAW, .access = PL1_W, .accessfn = access_ttlbis,
.writefn = tlbiall_is_write },
{ .name = "TLBIMVAIS", .cp = 15, .opc1 = 0, .crn = 8, .crm = 3, .opc2 = 1,
- .type = ARM_CP_NO_RAW, .access = PL1_W, .accessfn = access_ttlb,
+ .type = ARM_CP_NO_RAW, .access = PL1_W, .accessfn = access_ttlbis,
.writefn = tlbimva_is_write },
{ .name = "TLBIASIDIS", .cp = 15, .opc1 = 0, .crn = 8, .crm = 3, .opc2 = 2,
- .type = ARM_CP_NO_RAW, .access = PL1_W, .accessfn = access_ttlb,
+ .type = ARM_CP_NO_RAW, .access = PL1_W, .accessfn = access_ttlbis,
.writefn = tlbiasid_is_write },
{ .name = "TLBIMVAAIS", .cp = 15, .opc1 = 0, .crn = 8, .crm = 3, .opc2 = 3,
- .type = ARM_CP_NO_RAW, .access = PL1_W, .accessfn = access_ttlb,
+ .type = ARM_CP_NO_RAW, .access = PL1_W, .accessfn = access_ttlbis,
.writefn = tlbimvaa_is_write },
};
@@ -4945,27 +4956,27 @@ static const ARMCPRegInfo v8_cp_reginfo[] = {
/* TLBI operations */
{ .name = "TLBI_VMALLE1IS", .state = ARM_CP_STATE_AA64,
.opc0 = 1, .opc1 = 0, .crn = 8, .crm = 3, .opc2 = 0,
- .access = PL1_W, .accessfn = access_ttlb, .type = ARM_CP_NO_RAW,
+ .access = PL1_W, .accessfn = access_ttlbis, .type = ARM_CP_NO_RAW,
.writefn = tlbi_aa64_vmalle1is_write },
{ .name = "TLBI_VAE1IS", .state = ARM_CP_STATE_AA64,
.opc0 = 1, .opc1 = 0, .crn = 8, .crm = 3, .opc2 = 1,
- .access = PL1_W, .accessfn = access_ttlb, .type = ARM_CP_NO_RAW,
+ .access = PL1_W, .accessfn = access_ttlbis, .type = ARM_CP_NO_RAW,
.writefn = tlbi_aa64_vae1is_write },
{ .name = "TLBI_ASIDE1IS", .state = ARM_CP_STATE_AA64,
.opc0 = 1, .opc1 = 0, .crn = 8, .crm = 3, .opc2 = 2,
- .access = PL1_W, .accessfn = access_ttlb, .type = ARM_CP_NO_RAW,
+ .access = PL1_W, .accessfn = access_ttlbis, .type = ARM_CP_NO_RAW,
.writefn = tlbi_aa64_vmalle1is_write },
{ .name = "TLBI_VAAE1IS", .state = ARM_CP_STATE_AA64,
.opc0 = 1, .opc1 = 0, .crn = 8, .crm = 3, .opc2 = 3,
- .access = PL1_W, .accessfn = access_ttlb, .type = ARM_CP_NO_RAW,
+ .access = PL1_W, .accessfn = access_ttlbis, .type = ARM_CP_NO_RAW,
.writefn = tlbi_aa64_vae1is_write },
{ .name = "TLBI_VALE1IS", .state = ARM_CP_STATE_AA64,
.opc0 = 1, .opc1 = 0, .crn = 8, .crm = 3, .opc2 = 5,
- .access = PL1_W, .accessfn = access_ttlb, .type = ARM_CP_NO_RAW,
+ .access = PL1_W, .accessfn = access_ttlbis, .type = ARM_CP_NO_RAW,
.writefn = tlbi_aa64_vae1is_write },
{ .name = "TLBI_VAALE1IS", .state = ARM_CP_STATE_AA64,
.opc0 = 1, .opc1 = 0, .crn = 8, .crm = 3, .opc2 = 7,
- .access = PL1_W, .accessfn = access_ttlb, .type = ARM_CP_NO_RAW,
+ .access = PL1_W, .accessfn = access_ttlbis, .type = ARM_CP_NO_RAW,
.writefn = tlbi_aa64_vae1is_write },
{ .name = "TLBI_VMALLE1", .state = ARM_CP_STATE_AA64,
.opc0 = 1, .opc1 = 0, .crn = 8, .crm = 7, .opc2 = 0,
@@ -5075,10 +5086,10 @@ static const ARMCPRegInfo v8_cp_reginfo[] = {
#endif
/* TLB invalidate last level of translation table walk */
{ .name = "TLBIMVALIS", .cp = 15, .opc1 = 0, .crn = 8, .crm = 3, .opc2 = 5,
- .type = ARM_CP_NO_RAW, .access = PL1_W, .accessfn = access_ttlb,
+ .type = ARM_CP_NO_RAW, .access = PL1_W, .accessfn = access_ttlbis,
.writefn = tlbimva_is_write },
{ .name = "TLBIMVAALIS", .cp = 15, .opc1 = 0, .crn = 8, .crm = 3, .opc2 = 7,
- .type = ARM_CP_NO_RAW, .access = PL1_W, .accessfn = access_ttlb,
+ .type = ARM_CP_NO_RAW, .access = PL1_W, .accessfn = access_ttlbis,
.writefn = tlbimvaa_is_write },
{ .name = "TLBIMVAL", .cp = 15, .opc1 = 0, .crn = 8, .crm = 7, .opc2 = 5,
.type = ARM_CP_NO_RAW, .access = PL1_W, .accessfn = access_ttlb,
@@ -6724,19 +6735,19 @@ static const ARMCPRegInfo pauth_reginfo[] = {
static const ARMCPRegInfo tlbirange_reginfo[] = {
{ .name = "TLBI_RVAE1IS", .state = ARM_CP_STATE_AA64,
.opc0 = 1, .opc1 = 0, .crn = 8, .crm = 2, .opc2 = 1,
- .access = PL1_W, .accessfn = access_ttlb, .type = ARM_CP_NO_RAW,
+ .access = PL1_W, .accessfn = access_ttlbis, .type = ARM_CP_NO_RAW,
.writefn = tlbi_aa64_rvae1is_write },
{ .name = "TLBI_RVAAE1IS", .state = ARM_CP_STATE_AA64,
.opc0 = 1, .opc1 = 0, .crn = 8, .crm = 2, .opc2 = 3,
- .access = PL1_W, .accessfn = access_ttlb, .type = ARM_CP_NO_RAW,
+ .access = PL1_W, .accessfn = access_ttlbis, .type = ARM_CP_NO_RAW,
.writefn = tlbi_aa64_rvae1is_write },
{ .name = "TLBI_RVALE1IS", .state = ARM_CP_STATE_AA64,
.opc0 = 1, .opc1 = 0, .crn = 8, .crm = 2, .opc2 = 5,
- .access = PL1_W, .accessfn = access_ttlb, .type = ARM_CP_NO_RAW,
+ .access = PL1_W, .accessfn = access_ttlbis, .type = ARM_CP_NO_RAW,
.writefn = tlbi_aa64_rvae1is_write },
{ .name = "TLBI_RVAALE1IS", .state = ARM_CP_STATE_AA64,
.opc0 = 1, .opc1 = 0, .crn = 8, .crm = 2, .opc2 = 7,
- .access = PL1_W, .accessfn = access_ttlb, .type = ARM_CP_NO_RAW,
+ .access = PL1_W, .accessfn = access_ttlbis, .type = ARM_CP_NO_RAW,
.writefn = tlbi_aa64_rvae1is_write },
{ .name = "TLBI_RVAE1OS", .state = ARM_CP_STATE_AA64,
.opc0 = 1, .opc1 = 0, .crn = 8, .crm = 5, .opc2 = 1,
--
2.25.1
next prev parent reply other threads:[~2022-10-28 13:44 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-10-28 13:39 [PATCH 0/7] target/arm: Implement FEAT_EVT Peter Maydell
2022-10-28 13:39 ` [PATCH 1/7] target/arm: Make TLBIOS and TLBIRANGE ops trap on HCR_EL2.TTLB Peter Maydell
2022-10-28 19:29 ` Richard Henderson
2022-10-28 13:39 ` [PATCH 2/7] target/arm: Allow relevant HCR bits to be written for FEAT_EVT Peter Maydell
2022-10-28 19:35 ` Richard Henderson
2022-10-28 13:39 ` Peter Maydell [this message]
2022-10-28 19:39 ` [PATCH 3/7] target/arm: Implement HCR_EL2.TTLBIS traps Richard Henderson
2022-10-28 13:39 ` [PATCH 4/7] target/arm: Implement HCR_EL2.TTLBOS traps Peter Maydell
2022-10-28 19:40 ` Richard Henderson
2022-10-28 13:40 ` [PATCH 5/7] target/arm: Implement HCR_EL2.TICAB,TOCU traps Peter Maydell
2022-10-28 19:43 ` Richard Henderson
2022-10-28 13:40 ` [PATCH 6/7] target/arm: Implement HCR_EL2.TID4 traps Peter Maydell
2022-10-28 19:46 ` Richard Henderson
2022-10-28 13:40 ` [PATCH 7/7] target/arm: Report FEAT_EVT for TCG '-cpu max' Peter Maydell
2022-10-28 19:47 ` Richard Henderson
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=20221028134002.730598-4-peter.maydell@linaro.org \
--to=peter.maydell@linaro.org \
--cc=qemu-arm@nongnu.org \
--cc=qemu-devel@nongnu.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 an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.