From: "Russell King (Oracle)" <linux@armlinux.org.uk>
To: Linus Walleij <linus.walleij@linaro.org>
Cc: Ard Biesheuvel <ardb@kernel.org>, Arnd Bergmann <arnd@arndb.de>,
Stefan Wahren <wahrenst@gmx.net>,
Kees Cook <keescook@chromium.org>,
Geert Uytterhoeven <geert+renesas@glider.be>,
linux-arm-kernel@lists.infradead.org,
Catalin Marinas <catalin.marinas@arm.com>
Subject: Re: [PATCH v2 3/4] ARM: Reduce the number of #ifdef CONFIG_CPU_SW_DOMAIN_PAN
Date: Mon, 11 Mar 2024 16:02:44 +0000 [thread overview]
Message-ID: <Ze8rJNuqZocyHg2j@shell.armlinux.org.uk> (raw)
In-Reply-To: <20240221-arm32-lpae-pan-v2-3-991096bba5d8@linaro.org>
On Wed, Feb 21, 2024 at 12:04:02AM +0100, Linus Walleij wrote:
> @@ -24,9 +24,10 @@
> * perform such accesses (eg, via list poison values) which could then
> * be exploited for priviledge escalation.
> */
> +#if defined(CONFIG_CPU_SW_DOMAIN_PAN)
> +
> static __always_inline unsigned int uaccess_save_and_enable(void)
> {
> -#ifdef CONFIG_CPU_SW_DOMAIN_PAN
This is an interesting way to reduce the #ifdef count... why switch it
from #ifdef to #if defined ?
--
RMK's Patch system: https://www.armlinux.org.uk/developer/patches/
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next prev parent reply other threads:[~2024-03-11 16:03 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-02-20 23:03 [PATCH v2 0/4] PAN for ARM32 using LPAE Linus Walleij
2024-02-20 23:04 ` [PATCH v2 1/4] ARM: Add TTBCR_* definitions to pgtable-3level-hwdef.h Linus Walleij
2024-02-20 23:04 ` [PATCH v2 2/4] ARM: Move asm statements accessing TTBCR into C functions Linus Walleij
2024-02-20 23:04 ` [PATCH v2 3/4] ARM: Reduce the number of #ifdef CONFIG_CPU_SW_DOMAIN_PAN Linus Walleij
2024-03-11 16:02 ` Russell King (Oracle) [this message]
2024-03-12 8:22 ` Linus Walleij
2024-03-12 8:30 ` Linus Walleij
2024-03-12 8:39 ` Arnd Bergmann
2024-03-12 10:37 ` Russell King (Oracle)
2024-02-20 23:04 ` [PATCH v2 4/4] ARM: Implement privileged no-access using TTBR0 page table walks disabling Linus Walleij
2024-02-22 18:53 ` Linus Walleij
2024-03-01 8:29 ` [PATCH v2 0/4] PAN for ARM32 using LPAE Linus Walleij
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