From mboxrd@z Thu Jan  1 00:00:00 1970
From: =?UTF-8?q?Alex=20Benn=C3=A9e?= <alex.bennee@linaro.org>
Subject: [PATCH v5 07/12] KVM: arm64: guest debug, add support for single-step
Date: Fri, 29 May 2015 10:30:23 +0100
Message-ID: <1432891828-4816-8-git-send-email-alex.bennee@linaro.org>
References: <1432891828-4816-1-git-send-email-alex.bennee@linaro.org>
Mime-Version: 1.0
Content-Type: text/plain; charset="utf-8"
Content-Transfer-Encoding: base64
Cc: Russell King <linux@arm.linux.org.uk>, Gleb Natapov <gleb@kernel.org>,
 jan.kiszka@siemens.com, Will Deacon <will.deacon@arm.com>,
 open list <linux-kernel@vger.kernel.org>, dahi@linux.vnet.ibm.com,
 Catalin Marinas <catalin.marinas@arm.com>, r65777@freescale.com, bp@suse.de
To: kvm@vger.kernel.org, linux-arm-kernel@lists.infradead.org,
 kvmarm@lists.cs.columbia.edu, christoffer.dall@linaro.org,
 marc.zyngier@arm.com, peter.maydell@linaro.org, agraf@suse.de,
 drjones@redhat.com, pbonzini@redhat.com, zhichao.huang@linaro.org
Return-path: <kvmarm-bounces@lists.cs.columbia.edu>
In-Reply-To: <1432891828-4816-1-git-send-email-alex.bennee@linaro.org>
List-Unsubscribe: <https://lists.cs.columbia.edu/mailman/options/kvmarm>,
 <mailto:kvmarm-request@lists.cs.columbia.edu?subject=unsubscribe>
List-Archive: <https://lists.cs.columbia.edu/pipermail/kvmarm>
List-Post: <mailto:kvmarm@lists.cs.columbia.edu>
List-Help: <mailto:kvmarm-request@lists.cs.columbia.edu?subject=help>
List-Subscribe: <https://lists.cs.columbia.edu/mailman/listinfo/kvmarm>,
 <mailto:kvmarm-request@lists.cs.columbia.edu?subject=subscribe>
Errors-To: kvmarm-bounces@lists.cs.columbia.edu
Sender: kvmarm-bounces@lists.cs.columbia.edu
List-Id: kvm.vger.kernel.org

VGhpcyBhZGRzIHN1cHBvcnQgZm9yIHNpbmdsZS1zdGVwcGluZyB0aGUgZ3Vlc3QuIFRvIGRvIHRo
aXMgd2UgbmVlZCB0bwptYW5pcHVsYXRlIHRoZSBndWVzdHMgUFNUQVRFLlNTIGFuZCBNRFNDUl9F
TDEuU1MgYml0cyB3aGljaCB3ZSBkbyBpbiB0aGUKa3ZtX2FybV9zZXR1cC9jbGVhcl9kZWJ1Zygp
IHNvIHdlIGRvbid0IGFmZmVjdCB0aGUgYXBwYXJlbnQgc3RhdGUgb2YgdGhlCmd1ZXN0LiBBZGRp
dGlvbmFsbHkgd2hpbGUgdGhlIGhvc3QgaXMgZGVidWdnaW5nIHRoZSBndWVzdCB3ZSBzdXBwcmVz
cwp0aGUgYWJpbGl0eSBvZiB0aGUgZ3Vlc3QgdG8gc2luZ2xlLXN0ZXAgaXRzZWxmLgoKU2lnbmVk
LW9mZi1ieTogQWxleCBCZW5uw6llIDxhbGV4LmJlbm5lZUBsaW5hcm8ub3JnPgoKLS0tCnYyCiAg
LSBNb3ZlIHBzdGF0ZS9tZHNjciBtYW5pcHVsYXRpb24gaW50byBDCiAgLSBkb24ndCBleHBvcnQg
Z3Vlc3RfZGVidWcgdG8gYXNzZW1ibHkKICAtIGFkZCBhY2Nlc3NvciBmb3Igc2F2ZWRfZGVidWcg
cmVncwogIC0gdHdlYWsgc2F2ZS9yZXN0b3JlIG9mIG1kc2NyX2VsMQp2MwogIC0gZG9uJ3Qgc2F2
ZSBQQyBpbiBkZWJ1ZyBpbmZvcm1hdGlvbiBzdHJ1Y3QKICAtIHJlbmFtZSBkZWJ1Z19zYXZlZF9y
ZWdzLT5ndWVzdF9kZWJ1Z19zdGF0ZQogIC0gc2F2ZSB3aG9sZSB2YWx1ZSwgb25seSB1c2UgYml0
cyBpbiByZXN0b3JlCiAgLSBhZGQgc2F2ZS9yZXN0b3JlX2d1ZXN0LWRlYnVnX3JlZ3MgaGVscGVy
IGZ1bmN0aW9ucwogIC0gc2ltcGxpZnkgY29tbWl0IG1lc3NhZ2UgZm9yIGNsYXJpdHkKICAtIHJt
IHZjcHVfZGVidWdfc2F2ZWRfcmVnIGFjY2VzcyBmbgp2NAogIC0gYWRkZWQgbW9yZSBjb21tZW50
cyBiYXNlZCBvbiBzdWdnZXN0aW9ucwogIC0gZ3Vlc3RfZGVidWdfc3RhdGUtPmd1ZXN0X2RlYnVn
X3ByZXNlcnZlZAogIC0gbm8gcG9pbnQgbWFza2luZyByZXN0b3JlLCB3ZSB3aWxsIHRyYXAgb3V0
CnY1CiAgLSBtb3JlIGNvbW1lbnRzCiAgLSBkb24ndCBib3RoZXIgcHJlc2VydmluZyBwc3RhdGUu
c3MKLS0tCiBhcmNoL2FybS9rdm0vYXJtLmMgICAgICAgICAgICAgICAgfCAgNCArKy0KIGFyY2gv
YXJtNjQvaW5jbHVkZS9hc20va3ZtX2hvc3QuaCB8IDExICsrKysrKysrCiBhcmNoL2FybTY0L2t2
bS9kZWJ1Zy5jICAgICAgICAgICAgfCA1OCArKysrKysrKysrKysrKysrKysrKysrKysrKysrKysr
KysrKystLS0KIGFyY2gvYXJtNjQva3ZtL2hhbmRsZV9leGl0LmMgICAgICB8ICAyICsrCiA0IGZp
bGVzIGNoYW5nZWQsIDcwIGluc2VydGlvbnMoKyksIDUgZGVsZXRpb25zKC0pCgpkaWZmIC0tZ2l0
IGEvYXJjaC9hcm0va3ZtL2FybS5jIGIvYXJjaC9hcm0va3ZtL2FybS5jCmluZGV4IDA2NGMxMDUu
LjliM2VkNmQgMTAwNjQ0Ci0tLSBhL2FyY2gvYXJtL2t2bS9hcm0uYworKysgYi9hcmNoL2FybS9r
dm0vYXJtLmMKQEAgLTMwMiw3ICszMDIsOSBAQCB2b2lkIGt2bV9hcmNoX3ZjcHVfcHV0KHN0cnVj
dCBrdm1fdmNwdSAqdmNwdSkKIAlrdm1fYXJtX3NldF9ydW5uaW5nX3ZjcHUoTlVMTCk7CiB9CiAK
LSNkZWZpbmUgS1ZNX0dVRVNUREJHX1ZBTElEX01BU0sgKEtWTV9HVUVTVERCR19FTkFCTEUgfCBL
Vk1fR1VFU1REQkdfVVNFX1NXX0JQKQorI2RlZmluZSBLVk1fR1VFU1REQkdfVkFMSURfTUFTSyAo
S1ZNX0dVRVNUREJHX0VOQUJMRSB8ICAgIFwKKwkJCSAgICBLVk1fR1VFU1REQkdfVVNFX1NXX0JQ
IHwgXAorCQkJICAgIEtWTV9HVUVTVERCR19TSU5HTEVTVEVQKQogCiAvKioKICAqIGt2bV9hcmNo
X3ZjcHVfaW9jdGxfc2V0X2d1ZXN0X2RlYnVnIC0gc2V0IHVwIGd1ZXN0IGRlYnVnZ2luZwpkaWZm
IC0tZ2l0IGEvYXJjaC9hcm02NC9pbmNsdWRlL2FzbS9rdm1faG9zdC5oIGIvYXJjaC9hcm02NC9p
bmNsdWRlL2FzbS9rdm1faG9zdC5oCmluZGV4IDdjYjk5YjUuLmUyZGI2YTYgMTAwNjQ0Ci0tLSBh
L2FyY2gvYXJtNjQvaW5jbHVkZS9hc20va3ZtX2hvc3QuaAorKysgYi9hcmNoL2FybTY0L2luY2x1
ZGUvYXNtL2t2bV9ob3N0LmgKQEAgLTEyMyw2ICsxMjMsMTcgQEAgc3RydWN0IGt2bV92Y3B1X2Fy
Y2ggewogCSAqIGhlcmUuCiAJICovCiAKKwkvKgorCSAqIEd1ZXN0IHJlZ2lzdGVycyB3ZSBwcmVz
ZXJ2ZSBkdXJpbmcgZ3Vlc3QgZGVidWdnaW5nLgorCSAqCisJICogVGhlc2Ugc2hhZG93IHJlZ2lz
dGVycyBhcmUgdXBkYXRlZCBieSB0aGUga3ZtX2hhbmRsZV9zeXNfcmVnCisJICogdHJhcCBoYW5k
bGVyIGlmIHRoZSBndWVzdCBhY2Nlc3NlcyBvciB1cGRhdGVzIHRoZW0gd2hpbGUgd2UKKwkgKiBh
cmUgdXNpbmcgZ3Vlc3QgZGVidWcuCisJICovCisJc3RydWN0IHsKKwkJdTMyCW1kc2NyX2VsMTsK
Kwl9IGd1ZXN0X2RlYnVnX3ByZXNlcnZlZDsKKwogCS8qIERvbid0IHJ1biB0aGUgZ3Vlc3QgKi8K
IAlib29sIHBhdXNlOwogCmRpZmYgLS1naXQgYS9hcmNoL2FybTY0L2t2bS9kZWJ1Zy5jIGIvYXJj
aC9hcm02NC9rdm0vZGVidWcuYwppbmRleCA4ZDFiZmE0Li4xMGE2YmFhIDEwMDY0NAotLS0gYS9h
cmNoL2FybTY0L2t2bS9kZWJ1Zy5jCisrKyBiL2FyY2gvYXJtNjQva3ZtL2RlYnVnLmMKQEAgLTE5
LDExICsxOSw0MSBAQAogCiAjaW5jbHVkZSA8bGludXgva3ZtX2hvc3QuaD4KIAorI2luY2x1ZGUg
PGFzbS9kZWJ1Zy1tb25pdG9ycy5oPgorI2luY2x1ZGUgPGFzbS9rdm1fYXNtLmg+CiAjaW5jbHVk
ZSA8YXNtL2t2bV9hcm0uaD4KKyNpbmNsdWRlIDxhc20va3ZtX2VtdWxhdGUuaD4KKworLyogVGhl
c2UgYXJlIHRoZSBiaXRzIG9mIE1EU0NSX0VMMSB3ZSBtYXkgbWFuaXB1bGF0ZSAqLworI2RlZmlu
ZSBNRFNDUl9FTDFfREVCVUdfTUFTSwkoREJHX01EU0NSX1NTIHwgXAorCQkJCURCR19NRFNDUl9L
REUgfCBcCisJCQkJREJHX01EU0NSX01ERSkKIAogc3RhdGljIERFRklORV9QRVJfQ1BVKHUzMiwg
bWRjcl9lbDIpOwogCiAvKioKKyAqIHNhdmUvcmVzdG9yZV9ndWVzdF9kZWJ1Z19yZWdzCisgKgor
ICogRm9yIHNvbWUgZGVidWcgb3BlcmF0aW9ucyB3ZSBuZWVkIHRvIHR3ZWFrIHNvbWUgZ3Vlc3Qg
cmVnaXN0ZXJzLiBBcworICogYSByZXN1bHQgd2UgbmVlZCB0byBzYXZlIHRoZSBzdGF0ZSBvZiB0
aG9zZSByZWdpc3RlcnMgYmVmb3JlIHdlCisgKiBtYWtlIHRob3NlIG1vZGlmaWNhdGlvbnMuIFRo
aXMgZG9lcyBnZXQgY29uZnVzZWQgaWYgdGhlIGd1ZXN0CisgKiBhdHRlbXB0cyB0byBjb250cm9s
IHNpbmdsZSBzdGVwIHdoaWxlIGJlaW5nIGRlYnVnZ2VkLiBJdCB3aWxsIHN0YXJ0CisgKiB3b3Jr
aW5nIGFnYWluIG9uY2UgaXQgaXMgbm8gbG9uZ2VyIGJlaW5nIGRlYnVnZ2VkIGJ5IHRoZSBob3N0
LgorICoKKyAqIEd1ZXN0IGFjY2VzcyB0byBNRFNDUl9FTDEgaXMgdHJhcHBlZCBieSB0aGUgaHlw
ZXJ2aXNvciBhbmQgaGFuZGxlZAorICogYWZ0ZXIgd2UgaGF2ZSByZXN0b3JlZCB0aGUgcHJlc2Vy
dmVkIHZhbHVlIHRvIHRoZSBtYWluIGNvbnRleHQuCisgKi8KK3N0YXRpYyB2b2lkIHNhdmVfZ3Vl
c3RfZGVidWdfcmVncyhzdHJ1Y3Qga3ZtX3ZjcHUgKnZjcHUpCit7CisJdmNwdS0+YXJjaC5ndWVz
dF9kZWJ1Z19wcmVzZXJ2ZWQubWRzY3JfZWwxID0gdmNwdV9zeXNfcmVnKHZjcHUsIE1EU0NSX0VM
MSk7Cit9CisKK3N0YXRpYyB2b2lkIHJlc3RvcmVfZ3Vlc3RfZGVidWdfcmVncyhzdHJ1Y3Qga3Zt
X3ZjcHUgKnZjcHUpCit7CisJdmNwdV9zeXNfcmVnKHZjcHUsIE1EU0NSX0VMMSkgPSB2Y3B1LT5h
cmNoLmd1ZXN0X2RlYnVnX3ByZXNlcnZlZC5tZHNjcl9lbDE7Cit9CisKKy8qKgogICoga3ZtX2Fy
bV9pbml0X2RlYnVnIC0gZ3JhYiB3aGF0IHdlIG5lZWQgZm9yIGRlYnVnCiAgKgogICogQ3VycmVu
dGx5IHRoZSBzb2xlIHRhc2sgb2YgdGhpcyBmdW5jdGlvbiBpcyB0byByZXRyaWV2ZSB0aGUgaW5p
dGlhbApAQCAtMzgsNyArNjgsNiBAQCB2b2lkIGt2bV9hcm1faW5pdF9kZWJ1Zyh2b2lkKQogCV9f
dGhpc19jcHVfd3JpdGUobWRjcl9lbDIsIGt2bV9jYWxsX2h5cChfX2t2bV9nZXRfbWRjcl9lbDIp
KTsKIH0KIAotCiAvKioKICAqIGt2bV9hcm1fc2V0dXBfZGVidWcgLSBzZXQgdXAgZGVidWcgcmVs
YXRlZCBzdHVmZgogICoKQEAgLTczLDEyICsxMDIsMzMgQEAgdm9pZCBrdm1fYXJtX3NldHVwX2Rl
YnVnKHN0cnVjdCBrdm1fdmNwdSAqdmNwdSkKIAlpZiAodHJhcF9kZWJ1ZykKIAkJdmNwdS0+YXJj
aC5tZGNyX2VsMiB8PSBNRENSX0VMMl9UREE7CiAKLQkvKiBUcmFwIGJyZWFrcG9pbnRzPyAqLwot
CWlmICh2Y3B1LT5ndWVzdF9kZWJ1ZyAmIEtWTV9HVUVTVERCR19VU0VfU1dfQlApCisJLyogSXMg
R3Vlc3QgZGVidWdnaW5nIGluIGVmZmVjdD8gKi8KKwlpZiAodmNwdS0+Z3Vlc3RfZGVidWcpIHsK
IAkJdmNwdS0+YXJjaC5tZGNyX2VsMiB8PSBNRENSX0VMMl9UREU7CisKKwkJLyogU2F2ZSBndWVz
dCBkZWJ1ZyBzdGF0ZSAqLworCQlzYXZlX2d1ZXN0X2RlYnVnX3JlZ3ModmNwdSk7CisKKwkJLyoK
KwkJICogU2luZ2xlIFN0ZXAgKEFSTSBBUk0gRDIuMTIuMyBUaGUgc29mdHdhcmUgc3RlcCBzdGF0
ZQorCQkgKiBtYWNoaW5lKQorCQkgKgorCQkgKiBJZiB3ZSBhcmUgZG9pbmcgU2luZ2xlIFN0ZXAg
d2UgbmVlZCB0byBtYW5pcHVsYXRlCisJCSAqIE1EU0NSX0VMMS5TUyBhbmQgUFNUQVRFLlNTLiBJ
ZiBub3Qgd2UgbmVlZCB0bworCQkgKiBzdXBwcmVzcyB0aGUgZ3Vlc3RzIGFiaWxpdHkgdG8gdHJp
Z2dlciBzaW5nbGUgc3RlcAorCQkgKiBleGNlcHRpb25zIGFzIG90aGVyd2lzZSB0aGUgaG9zdCB3
aWxsIGRlYWwgd2l0aCB0aGVtLgorCQkgKi8KKwkJaWYgKHZjcHUtPmd1ZXN0X2RlYnVnICYgS1ZN
X0dVRVNUREJHX1NJTkdMRVNURVApIHsKKwkJCSp2Y3B1X2Nwc3IodmNwdSkgfD0gIERCR19TUFNS
X1NTOworCQkJdmNwdV9zeXNfcmVnKHZjcHUsIE1EU0NSX0VMMSkgfD0gREJHX01EU0NSX1NTOwor
CQl9IGVsc2UgeworCQkJdmNwdV9zeXNfcmVnKHZjcHUsIE1EU0NSX0VMMSkgJj0gfkRCR19NRFND
Ul9TUzsKKwkJfQorCX0KIH0KIAogdm9pZCBrdm1fYXJtX2NsZWFyX2RlYnVnKHN0cnVjdCBrdm1f
dmNwdSAqdmNwdSkKIHsKLQkvKiBOb3RoaW5nIHRvIGRvIHlldCAqLworCWlmICh2Y3B1LT5ndWVz
dF9kZWJ1ZykKKwkJcmVzdG9yZV9ndWVzdF9kZWJ1Z19yZWdzKHZjcHUpOwogfQpkaWZmIC0tZ2l0
IGEvYXJjaC9hcm02NC9rdm0vaGFuZGxlX2V4aXQuYyBiL2FyY2gvYXJtNjQva3ZtL2hhbmRsZV9l
eGl0LmMKaW5kZXggMjdmMzhhOS4uZTlkZTEzZSAxMDA2NDQKLS0tIGEvYXJjaC9hcm02NC9rdm0v
aGFuZGxlX2V4aXQuYworKysgYi9hcmNoL2FybTY0L2t2bS9oYW5kbGVfZXhpdC5jCkBAIC0xMDMs
NiArMTAzLDcgQEAgc3RhdGljIGludCBrdm1faGFuZGxlX2d1ZXN0X2RlYnVnKHN0cnVjdCBrdm1f
dmNwdSAqdmNwdSwgc3RydWN0IGt2bV9ydW4gKnJ1bikKIAlydW4tPmRlYnVnLmFyY2guaHNyID0g
aHNyOwogCiAJc3dpdGNoIChoc3IgPj4gRVNSX0VMeF9FQ19TSElGVCkgeworCWNhc2UgRVNSX0VM
eF9FQ19TT0ZUU1RQX0xPVzoKIAljYXNlIEVTUl9FTHhfRUNfQktQVDMyOgogCWNhc2UgRVNSX0VM
eF9FQ19CUks2NDoKIAkJYnJlYWs7CkBAIC0xMzAsNiArMTMxLDcgQEAgc3RhdGljIGV4aXRfaGFu
ZGxlX2ZuIGFybV9leGl0X2hhbmRsZXJzW10gPSB7CiAJW0VTUl9FTHhfRUNfU1lTNjRdCT0ga3Zt
X2hhbmRsZV9zeXNfcmVnLAogCVtFU1JfRUx4X0VDX0lBQlRfTE9XXQk9IGt2bV9oYW5kbGVfZ3Vl
c3RfYWJvcnQsCiAJW0VTUl9FTHhfRUNfREFCVF9MT1ddCT0ga3ZtX2hhbmRsZV9ndWVzdF9hYm9y
dCwKKwlbRVNSX0VMeF9FQ19TT0ZUU1RQX0xPV109IGt2bV9oYW5kbGVfZ3Vlc3RfZGVidWcsCiAJ
W0VTUl9FTHhfRUNfQktQVDMyXQk9IGt2bV9oYW5kbGVfZ3Vlc3RfZGVidWcsCiAJW0VTUl9FTHhf
RUNfQlJLNjRdCT0ga3ZtX2hhbmRsZV9ndWVzdF9kZWJ1ZywKIH07Ci0tIAoyLjQuMQoKX19fX19f
X19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX18Ka3ZtYXJtIG1haWxpbmcg
bGlzdAprdm1hcm1AbGlzdHMuY3MuY29sdW1iaWEuZWR1Cmh0dHBzOi8vbGlzdHMuY3MuY29sdW1i
aWEuZWR1L21haWxtYW4vbGlzdGluZm8va3ZtYXJtCg==