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charset="utf-8" Content-Transfer-Encoding: base64 Sender: "linux-riscv" Errors-To: linux-riscv-bounces+linux-riscv=archiver.kernel.org@lists.infradead.org T24gRnJpLCBOb3YgMDgsIDIwMjQgYXQgMDU6MTI6MDRQTSAtMDUwMCwgSmVzc2UgVCB3cm90ZToK PiBPbiBGcmksIE5vdiA4LCAyMDI0IGF0IDU6MDnigK9QTSBKZXNzZSBUIDxtci5ib3NzbWFuMDc1 QGdtYWlsLmNvbT4gd3JvdGU6Cj4gPgo+ID4gT24gVGh1LCBOb3YgNywgMjAyNCBhdCA1OjM44oCv UE0gQ2hhcmxpZSBKZW5raW5zIDxjaGFybGllQHJpdm9zaW5jLmNvbT4gd3JvdGU6Cj4gPiA+Cj4g PiA+IENvbW1pdCBkMTcwM2RjN2JjOGUgKCJSSVNDLVY6IERldGVjdCB1bmFsaWduZWQgdmVjdG9y IGFjY2Vzc2VzCj4gPiA+IHN1cHBvcnRlZCIpIHJlbW92ZWQgdGhlIGRlZmF1bHQgaGFuZGxlcnMg Zm9yIGhhbmRsZV9taXNhbGlnbmVkX2xvYWQoKQo+ID4gPiBhbmQgaGFuZGxlX21pc2FsaWduZWRf c3RvcmUoKS4gV2hlbiB0aGUga2VybmVsIGlzIGNvbXBpbGVkIHdpdGhvdXQKPiA+ID4gUklTQ1Zf U0NBTEFSX01JU0FMSUdORUQKPiA+IFRlY2huaWNhbGx5IENPTkZJR19SSVNDVl9NSVNBTElHTkVE Lgo+ID4gSSBhcHBhcmVudGx5IGNoYW5nZWQgYCtvYmoteSArPSB0cmFwc19taXNhbGlnbmVkLm9g IHRvCj4gPiBgK29iai0kKENPTkZJR19SSVNDVl9NSVNBTElHTkVEKSArPSB0cmFwc19taXNhbGln bmVkLm9gCj4gPiBpbiBWMiBhbmQgZGlkbid0IGNoYW5nZSB0aGF0IGNoZWNrIGJhY2sgb29wcyBz b3JyeS4KPiA+Cj4gPiA+ICwgdGhlc2UgaGFuZGxlcnMgYXJlIG5ldmVyIGRlZmluZWQsIGNhdXNp bmcKPiA+ID4gY29tcGlsYXRpb24gZXJyb3JzLgo+ID4gPgo+ID4gPiBTaWduZWQtb2ZmLWJ5OiBD aGFybGllIEplbmtpbnMgPGNoYXJsaWVAcml2b3NpbmMuY29tPgo+ID4gU2lnbmVkLW9mZi1ieTog SmVzc2UgVGF1YmUgPG1yLmJvc3NtYW4wNzVAZ21haWwuY29tPgo+ID4KPiA+ID4gRml4ZXM6IGQx NzAzZGM3YmM4ZSAoIlJJU0MtVjogRGV0ZWN0IHVuYWxpZ25lZCB2ZWN0b3IgYWNjZXNzZXMgc3Vw cG9ydGVkIikKPiA+ID4gLS0tCj4gPiA+ICBhcmNoL3Jpc2N2L2luY2x1ZGUvYXNtL2VudHJ5LWNv bW1vbi5oIHwgMTIgKysrKysrKysrKysrCj4gPiA+ICAxIGZpbGUgY2hhbmdlZCwgMTIgaW5zZXJ0 aW9ucygrKQo+ID4gPgo+ID4gPiBkaWZmIC0tZ2l0IGEvYXJjaC9yaXNjdi9pbmNsdWRlL2FzbS9l bnRyeS1jb21tb24uaCBiL2FyY2gvcmlzY3YvaW5jbHVkZS9hc20vZW50cnktY29tbW9uLmgKPiA+ ID4gaW5kZXggN2IzMmQyYjA4YmI2Li5jMjgwODU2MWRmODEgMTAwNjQ0Cj4gPiA+IC0tLSBhL2Fy Y2gvcmlzY3YvaW5jbHVkZS9hc20vZW50cnktY29tbW9uLmgKPiA+ID4gKysrIGIvYXJjaC9yaXNj di9pbmNsdWRlL2FzbS9lbnRyeS1jb21tb24uaAo+ID4gPiBAQCAtMjUsNyArMjUsMTkgQEAgc3Rh dGljIGlubGluZSB2b2lkIGFyY2hfZXhpdF90b191c2VyX21vZGVfcHJlcGFyZShzdHJ1Y3QgcHRf cmVncyAqcmVncywKPiA+ID4gIHZvaWQgaGFuZGxlX3BhZ2VfZmF1bHQoc3RydWN0IHB0X3JlZ3Mg KnJlZ3MpOwo+ID4gPiAgdm9pZCBoYW5kbGVfYnJlYWsoc3RydWN0IHB0X3JlZ3MgKnJlZ3MpOwo+ ID4gPgo+ID4gPiArI2lmZGVmIENPTkZJR19SSVNDVl9TQ0FMQVJfTUlTQUxJR05FRAo+IAo+IE1l YW50IHRvIHNheSB0byBjaGFuZ2UgdGhpcyB0byBDT05GSUdfUklTQ1ZfTUlTQUxJR05FRC4KPiBB cyB0aGV5IGFyZSBkZWZpbmVkIHdoZW4gQ09ORklHX1JJU0NWX1NDQUxBUl9NSVNBTElHTkVEIGlz IGZhbHNlCj4gYW5kIENPTkZJR19SSVNDVl9WRUNUT0VfTUlTQUxJR05FRCBpcyB0cnVlLiB0aGV5 IGFyZSBvbmx5IG5vdCBkZWZpbmVkIHdoZW4KPiBDT05GSUdfUklTQ1ZfU0NBTEFSX01JU0FMSUdO RUQgaXMgZmFsc2UuCgpPaCB5ZXMsIHRoYW5rIHlvdSEKCi0gQ2hhcmxpZQoKPiAKPiA+ID4gIGlu dCBoYW5kbGVfbWlzYWxpZ25lZF9sb2FkKHN0cnVjdCBwdF9yZWdzICpyZWdzKTsKPiA+ID4gIGlu dCBoYW5kbGVfbWlzYWxpZ25lZF9zdG9yZShzdHJ1Y3QgcHRfcmVncyAqcmVncyk7Cj4gPiA+ICsj ZWxzZQo+ID4gPiArc3RhdGljIGlubGluZSBpbnQgaGFuZGxlX21pc2FsaWduZWRfbG9hZChzdHJ1 Y3QgcHRfcmVncyAqcmVncykKPiA+ID4gK3sKPiA+ID4gKyAgICAgICByZXR1cm4gLTE7Cj4gPiA+ ICt9Cj4gPiA+ICsKPiA+ID4gK3N0YXRpYyBpbmxpbmUgaW50IGhhbmRsZV9taXNhbGlnbmVkX3N0 b3JlKHN0cnVjdCBwdF9yZWdzICpyZWdzKQo+ID4gPiArewo+ID4gPiArICAgICAgIHJldHVybiAt MTsKPiA+ID4gK30KPiA+ID4gKyNlbmRpZgo+ID4gPgo+ID4gPiAgI2VuZGlmIC8qIF9BU01fUklT Q1ZfRU5UUllfQ09NTU9OX0ggKi8KPiA+ID4KPiA+ID4gLS0tCj4gPiA+IGJhc2UtY29tbWl0OiA3 NDc0MWEwNTBiNzlkMzFkOGQyZWVlZTEyYzc3NzM2NTk2ZDBhNmIyCj4gPiA+IGNoYW5nZS1pZDog MjAyNDExMDctZml4X2hhbmRsZV9taXNhbGlnbmVkX2xvYWQtOGJlODZjYjA4MDZlCj4gPiA+IC0t Cj4gPiA+IC0gQ2hhcmxpZQo+ID4gPgoKX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19f X19fX19fX19fX19fX18KbGludXgtcmlzY3YgbWFpbGluZyBsaXN0CmxpbnV4LXJpc2N2QGxpc3Rz LmluZnJhZGVhZC5vcmcKaHR0cDovL2xpc3RzLmluZnJhZGVhZC5vcmcvbWFpbG1hbi9saXN0aW5m by9saW51eC1yaXNjdgo= From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-pj1-f53.google.com (mail-pj1-f53.google.com [209.85.216.53]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id A57B129CF4 for ; 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Fri, 08 Nov 2024 15:16:22 -0800 (PST) Received: from ghost ([50.145.13.30]) by smtp.gmail.com with ESMTPSA id d9443c01a7336-21177dc82a8sm36221385ad.28.2024.11.08.15.16.21 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 08 Nov 2024 15:16:22 -0800 (PST) Date: Fri, 8 Nov 2024 15:16:19 -0800 From: Charlie Jenkins To: Jesse T Cc: Paul Walmsley , Palmer Dabbelt , Albert Ou , Palmer Dabbelt , linux-riscv@lists.infradead.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH for-next] riscv: Fix default misaligned access trap Message-ID: References: <20241107-fix_handle_misaligned_load-v1-1-07d7852c9991@rivosinc.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline Content-Transfer-Encoding: 8bit In-Reply-To: On Fri, Nov 08, 2024 at 05:12:04PM -0500, Jesse T wrote: > On Fri, Nov 8, 2024 at 5:09 PM Jesse T wrote: > > > > On Thu, Nov 7, 2024 at 5:38 PM Charlie Jenkins wrote: > > > > > > Commit d1703dc7bc8e ("RISC-V: Detect unaligned vector accesses > > > supported") removed the default handlers for handle_misaligned_load() > > > and handle_misaligned_store(). When the kernel is compiled without > > > RISCV_SCALAR_MISALIGNED > > Technically CONFIG_RISCV_MISALIGNED. > > I apparently changed `+obj-y += traps_misaligned.o` to > > `+obj-$(CONFIG_RISCV_MISALIGNED) += traps_misaligned.o` > > in V2 and didn't change that check back oops sorry. > > > > > , these handlers are never defined, causing > > > compilation errors. > > > > > > Signed-off-by: Charlie Jenkins > > Signed-off-by: Jesse Taube > > > > > Fixes: d1703dc7bc8e ("RISC-V: Detect unaligned vector accesses supported") > > > --- > > > arch/riscv/include/asm/entry-common.h | 12 ++++++++++++ > > > 1 file changed, 12 insertions(+) > > > > > > diff --git a/arch/riscv/include/asm/entry-common.h b/arch/riscv/include/asm/entry-common.h > > > index 7b32d2b08bb6..c2808561df81 100644 > > > --- a/arch/riscv/include/asm/entry-common.h > > > +++ b/arch/riscv/include/asm/entry-common.h > > > @@ -25,7 +25,19 @@ static inline void arch_exit_to_user_mode_prepare(struct pt_regs *regs, > > > void handle_page_fault(struct pt_regs *regs); > > > void handle_break(struct pt_regs *regs); > > > > > > +#ifdef CONFIG_RISCV_SCALAR_MISALIGNED > > Meant to say to change this to CONFIG_RISCV_MISALIGNED. > As they are defined when CONFIG_RISCV_SCALAR_MISALIGNED is false > and CONFIG_RISCV_VECTOE_MISALIGNED is true. they are only not defined when > CONFIG_RISCV_SCALAR_MISALIGNED is false. Oh yes, thank you! - Charlie > > > > int handle_misaligned_load(struct pt_regs *regs); > > > int handle_misaligned_store(struct pt_regs *regs); > > > +#else > > > +static inline int handle_misaligned_load(struct pt_regs *regs) > > > +{ > > > + return -1; > > > +} > > > + > > > +static inline int handle_misaligned_store(struct pt_regs *regs) > > > +{ > > > + return -1; > > > +} > > > +#endif > > > > > > #endif /* _ASM_RISCV_ENTRY_COMMON_H */ > > > > > > --- > > > base-commit: 74741a050b79d31d8d2eeee12c77736596d0a6b2 > > > change-id: 20241107-fix_handle_misaligned_load-8be86cb0806e > > > -- > > > - Charlie > > >