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envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=2a00:1450:4864:20::349; envelope-from=3vHrfYwgKClUF9BFGx2x3BB381.zB9D19H-01I18ABA3AH.BE3@flex--smostafa.bounces.google.com; helo=mail-wm1-x349.google.com X-Spam_score_int: -95 X-Spam_score: -9.6 X-Spam_bar: --------- X-Spam_report: (-9.6 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_MED=-0.001, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, USER_IN_DEF_DKIM_WL=-7.5 autolearn=unavailable autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: qemu-devel-bounces+importer=patchew.org@nongnu.org X-ZohoMail-DKIM: pass (identity @google.com) X-ZM-MESSAGEID: 1675590459700100001 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" According to SMMUv3 user manual "5.2 Stream Table Entry": All fields with an S2 prefix (with the exception of S2VMID) are IGNORED when stage-2 bypasses translation (Config[1] =3D=3D 0). Which means that VMID can be used(for TLB tagging) even if stage-2 is bypassed, so we parse it unconditionally when S2P exists. Otherwise it is set to -1.(only S1P) Advertise 16-bit VMID is supported. Signed-off-by: Mostafa Saleh --- hw/arm/smmuv3.c | 9 +++++++++ 1 file changed, 9 insertions(+) diff --git a/hw/arm/smmuv3.c b/hw/arm/smmuv3.c index 769c735697..35a0149bbf 100644 --- a/hw/arm/smmuv3.c +++ b/hw/arm/smmuv3.c @@ -260,6 +260,7 @@ static void smmuv3_init_regs(SMMUv3State *s) s->idr[0] =3D FIELD_DP32(s->idr[0], IDR0, TTF, 2); /* AArch64 PTW only= */ s->idr[0] =3D FIELD_DP32(s->idr[0], IDR0, COHACC, 1); /* IO coherent */ s->idr[0] =3D FIELD_DP32(s->idr[0], IDR0, ASID16, 1); /* 16-bit ASID */ + s->idr[0] =3D FIELD_DP32(s->idr[0], IDR0, VMID16, 1); /* 16-bit VMID */ s->idr[0] =3D FIELD_DP32(s->idr[0], IDR0, TTENDIAN, 2); /* little endi= an */ s->idr[0] =3D FIELD_DP32(s->idr[0], IDR0, STALL_MODEL, 1); /* No stall= */ /* terminated transaction will always be aborted/error returned */ @@ -388,6 +389,14 @@ static int decode_ste(SMMUv3State *s, SMMUTransCfg *cf= g, return 0; } =20 + if (STAGE2_SUPPORTED(s->features)) { + /* VMID is considered even if s2 is disabled. */ + cfg->s2cfg.vmid =3D STE_S2VMID(ste); + } else { + /* Default to -1 */ + cfg->s2cfg.vmid =3D -1; + } + if (STAGE2_SUPPORTED(s->features) && STE_CFG_S2_ENABLED(config)) { cfg->stage =3D 2; =20 --=20 2.39.1.519.gcb327c4b5f-goog