From: Vincenzo Frascino <vincenzo.frascino@arm.com>
To: Catalin Marinas <catalin.marinas@arm.com>
Cc: linux-arm-kernel@lists.infradead.org,
linux-kernel@vger.kernel.org, ard.biesheuvel@linaro.org,
ndesaulniers@google.com, will@kernel.org, tglx@linutronix.de
Subject: Re: [PATCH 3/4] arm64: vdso32: Fix compilation warning
Date: Thu, 26 Sep 2019 12:03:40 +0100 [thread overview]
Message-ID: <25676f5c-0c95-82b4-8d09-a313f812bb01@arm.com> (raw)
In-Reply-To: <20190926083217.GD26802@iMac.local>
On 9/26/19 9:32 AM, Catalin Marinas wrote:
> On Thu, Sep 26, 2019 at 07:03:52AM +0100, Vincenzo Frascino wrote:
>> diff --git a/arch/arm64/include/asm/memory.h b/arch/arm64/include/asm/memory.h
>> index b61b50bf68b1..b1c8c43234c5 100644
>> --- a/arch/arm64/include/asm/memory.h
>> +++ b/arch/arm64/include/asm/memory.h
>> @@ -228,11 +228,16 @@ static inline unsigned long kaslr_offset(void)
>> #define __tag_get(addr) 0
>> #endif /* CONFIG_KASAN_SW_TAGS */
>>
>> +#ifdef __aarch64__
>> static inline const void *__tag_set(const void *addr, u8 tag)
>> {
>> u64 __addr = (u64)addr & ~__tag_shifted(0xff);
>> return (const void *)(__addr | __tag_shifted(tag));
>> }
>> +#else
>> +/* Unused in 32 bit mode */
>> +#define __tag_set(addr, tag) 0
>> +#endif
>
> I'm fine with this as a temporary workaround (or hack). But please add a
> better comment on what the 32-bit mode is about - the compat vDSO.
>
Ok, I will do in v2, to avoid confusion.
--
Regards,
Vincenzo
WARNING: multiple messages have this Message-ID (diff)
From: Vincenzo Frascino <vincenzo.frascino@arm.com>
To: Catalin Marinas <catalin.marinas@arm.com>
Cc: ard.biesheuvel@linaro.org, ndesaulniers@google.com,
linux-kernel@vger.kernel.org, tglx@linutronix.de,
will@kernel.org, linux-arm-kernel@lists.infradead.org
Subject: Re: [PATCH 3/4] arm64: vdso32: Fix compilation warning
Date: Thu, 26 Sep 2019 12:03:40 +0100 [thread overview]
Message-ID: <25676f5c-0c95-82b4-8d09-a313f812bb01@arm.com> (raw)
In-Reply-To: <20190926083217.GD26802@iMac.local>
On 9/26/19 9:32 AM, Catalin Marinas wrote:
> On Thu, Sep 26, 2019 at 07:03:52AM +0100, Vincenzo Frascino wrote:
>> diff --git a/arch/arm64/include/asm/memory.h b/arch/arm64/include/asm/memory.h
>> index b61b50bf68b1..b1c8c43234c5 100644
>> --- a/arch/arm64/include/asm/memory.h
>> +++ b/arch/arm64/include/asm/memory.h
>> @@ -228,11 +228,16 @@ static inline unsigned long kaslr_offset(void)
>> #define __tag_get(addr) 0
>> #endif /* CONFIG_KASAN_SW_TAGS */
>>
>> +#ifdef __aarch64__
>> static inline const void *__tag_set(const void *addr, u8 tag)
>> {
>> u64 __addr = (u64)addr & ~__tag_shifted(0xff);
>> return (const void *)(__addr | __tag_shifted(tag));
>> }
>> +#else
>> +/* Unused in 32 bit mode */
>> +#define __tag_set(addr, tag) 0
>> +#endif
>
> I'm fine with this as a temporary workaround (or hack). But please add a
> better comment on what the 32-bit mode is about - the compat vDSO.
>
Ok, I will do in v2, to avoid confusion.
--
Regards,
Vincenzo
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next prev parent reply other threads:[~2019-09-26 11:01 UTC|newest]
Thread overview: 127+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-09-20 14:27 Problems with arm64 compat vdso Will Deacon
2019-09-20 16:33 ` Vincenzo Frascino
2019-09-23 16:41 ` Ard Biesheuvel
2019-09-24 12:11 ` Vincenzo Frascino
2019-09-24 18:06 ` Nick Desaulniers
2019-09-24 20:42 ` Vincenzo Frascino
2019-09-25 15:58 ` Ard Biesheuvel
2019-09-26 6:03 ` [PATCH 0/4] arm64: vdso32: Address various issues Vincenzo Frascino
2019-09-26 6:03 ` Vincenzo Frascino
2019-09-26 6:03 ` [PATCH 1/4] arm64: vdso32: Introduce COMPAT_CC_IS_GCC Vincenzo Frascino
2019-09-26 6:03 ` Vincenzo Frascino
2019-09-26 8:06 ` Catalin Marinas
2019-09-26 8:06 ` Catalin Marinas
2019-09-26 10:56 ` Vincenzo Frascino
2019-09-26 10:56 ` Vincenzo Frascino
2019-09-26 11:02 ` Vincenzo Frascino
2019-09-26 11:02 ` Vincenzo Frascino
2019-09-26 15:23 ` Catalin Marinas
2019-09-26 15:23 ` Catalin Marinas
2019-09-26 12:22 ` Vincenzo Frascino
2019-09-26 12:22 ` Vincenzo Frascino
2019-09-26 15:17 ` Catalin Marinas
2019-09-26 15:17 ` Catalin Marinas
2019-09-26 20:17 ` Vincenzo Frascino
2019-09-26 20:17 ` Vincenzo Frascino
2019-09-26 6:03 ` [PATCH 2/4] arm64: vdso32: Detect binutils support for dmb ishld Vincenzo Frascino
2019-09-26 6:03 ` Vincenzo Frascino
2019-09-26 8:30 ` Catalin Marinas
2019-09-26 8:30 ` Catalin Marinas
2019-09-26 10:59 ` Vincenzo Frascino
2019-09-26 10:59 ` Vincenzo Frascino
2019-09-26 6:03 ` [PATCH 3/4] arm64: vdso32: Fix compilation warning Vincenzo Frascino
2019-09-26 6:03 ` Vincenzo Frascino
2019-09-26 8:32 ` Catalin Marinas
2019-09-26 8:32 ` Catalin Marinas
2019-09-26 11:03 ` Vincenzo Frascino [this message]
2019-09-26 11:03 ` Vincenzo Frascino
2019-09-26 6:03 ` [PATCH 4/4] arm64: Remove gettimeofday.S Vincenzo Frascino
2019-09-26 6:03 ` Vincenzo Frascino
2019-09-26 8:34 ` Catalin Marinas
2019-09-26 8:34 ` Catalin Marinas
2019-09-26 13:38 ` [PATCH v2 0/4] arm64: vdso32: Address various issues Vincenzo Frascino
2019-09-26 13:38 ` Vincenzo Frascino
2019-09-26 13:38 ` [PATCH v2 1/4] arm64: vdso32: Introduce COMPAT_CC_IS_GCC Vincenzo Frascino
2019-09-26 13:38 ` Vincenzo Frascino
2019-09-26 15:13 ` Catalin Marinas
2019-09-26 15:13 ` Catalin Marinas
2019-09-26 13:38 ` [PATCH v2 2/4] arm64: vdso32: Detect binutils support for dmb ishld Vincenzo Frascino
2019-09-26 13:38 ` Vincenzo Frascino
2019-09-26 14:26 ` Catalin Marinas
2019-09-26 14:26 ` Catalin Marinas
2019-09-26 20:19 ` Vincenzo Frascino
2019-09-26 20:19 ` Vincenzo Frascino
2019-09-26 15:59 ` Catalin Marinas
2019-09-26 15:59 ` Catalin Marinas
2019-09-26 21:17 ` Vincenzo Frascino
2019-09-26 21:17 ` Vincenzo Frascino
2019-09-26 16:23 ` Nick Desaulniers
2019-09-26 16:23 ` Nick Desaulniers
2019-09-26 13:38 ` [PATCH v2 3/4] arm64: vdso32: Fix compilation warning Vincenzo Frascino
2019-09-26 13:38 ` Vincenzo Frascino
2019-09-26 15:22 ` Catalin Marinas
2019-09-26 15:22 ` Catalin Marinas
2019-09-26 13:38 ` [PATCH v2 4/4] arm64: Remove gettimeofday.S Vincenzo Frascino
2019-09-26 13:38 ` Vincenzo Frascino
2019-09-26 15:31 ` [PATCH v2 0/4] arm64: vdso32: Address various issues Catalin Marinas
2019-09-26 15:31 ` Catalin Marinas
2019-09-26 20:29 ` Vincenzo Frascino
2019-09-26 20:29 ` Vincenzo Frascino
2019-09-26 21:43 ` [PATCH v3 0/5]arm64: " Vincenzo Frascino
2019-09-26 21:43 ` Vincenzo Frascino
2019-09-26 21:43 ` [PATCH v3 1/5] arm64: vdso32: Introduce COMPAT_CC_IS_GCC Vincenzo Frascino
2019-09-26 21:43 ` Vincenzo Frascino
2019-09-27 9:24 ` Catalin Marinas
2019-09-27 9:24 ` Catalin Marinas
2019-10-01 13:14 ` Will Deacon
2019-10-01 13:14 ` Will Deacon
2019-10-01 13:27 ` Catalin Marinas
2019-10-01 13:27 ` Catalin Marinas
2019-10-01 14:20 ` Vincenzo Frascino
2019-10-01 14:20 ` Vincenzo Frascino
2019-10-01 14:20 ` Will Deacon
2019-10-01 14:20 ` Will Deacon
2019-10-01 14:37 ` Vincenzo Frascino
2019-10-01 14:37 ` Vincenzo Frascino
2019-10-01 14:43 ` Will Deacon
2019-10-01 14:43 ` Will Deacon
2019-10-01 14:59 ` Vincenzo Frascino
2019-10-01 14:59 ` Vincenzo Frascino
2019-10-01 15:30 ` Catalin Marinas
2019-10-01 15:30 ` Catalin Marinas
2019-10-01 16:46 ` Will Deacon
2019-10-01 16:46 ` Will Deacon
2019-10-01 16:59 ` Nick Desaulniers
2019-10-01 16:59 ` Nick Desaulniers
2019-10-01 17:07 ` Will Deacon
2019-10-01 17:07 ` Will Deacon
2019-10-01 17:12 ` Nick Desaulniers
2019-10-01 17:12 ` Nick Desaulniers
2019-10-01 17:14 ` Will Deacon
2019-10-01 17:14 ` Will Deacon
2019-09-26 21:43 ` [PATCH v3 2/5] arm64: vdso32: Detect binutils support for dmb ishld Vincenzo Frascino
2019-09-26 21:43 ` Vincenzo Frascino
2019-09-27 9:25 ` Catalin Marinas
2019-09-27 9:25 ` Catalin Marinas
2019-10-01 13:26 ` Will Deacon
2019-10-01 13:26 ` Will Deacon
2019-10-01 14:23 ` Vincenzo Frascino
2019-10-01 14:23 ` Vincenzo Frascino
2019-09-26 21:43 ` [PATCH v3 3/5] arm64: vdso32: Fix compilation warning Vincenzo Frascino
2019-09-26 21:43 ` Vincenzo Frascino
2019-09-27 9:26 ` Catalin Marinas
2019-09-27 9:26 ` Catalin Marinas
2019-10-01 13:21 ` Will Deacon
2019-10-01 13:21 ` Will Deacon
2019-10-01 14:41 ` Vincenzo Frascino
2019-10-01 14:41 ` Vincenzo Frascino
2019-09-26 21:43 ` [PATCH v3 4/5] arm64: Remove gettimeofday.S Vincenzo Frascino
2019-09-26 21:43 ` Vincenzo Frascino
2019-09-26 21:43 ` [PATCH v3 5/5] arm64: vdso32: Remove jump label config option in Makefile Vincenzo Frascino
2019-09-26 21:43 ` Vincenzo Frascino
2019-09-27 9:27 ` Catalin Marinas
2019-09-27 9:27 ` Catalin Marinas
2019-09-27 10:46 ` [PATCH v3 0/5]arm64: vdso32: Address various issues Catalin Marinas
2019-09-27 10:46 ` Catalin Marinas
2019-10-01 13:27 ` Will Deacon
2019-10-01 13:27 ` Will Deacon
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