linux-kernel - Re: [PATCH] x86/sgx: use vm_flags_t for vm_prot

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [day] [month] [year] [list]

Message-ID: <aXYsikbf-2yMnJ1F@kernel.org>
Date: Sun, 25 Jan 2026 16:45:30 +0200
From: Jarkko Sakkinen <jarkko@...nel.org>
To: Wentong Tian <tianwentong2000@...il.com>
Cc: dave.hansen@...ux.intel.com, tglx@...nel.org, mingo@...hat.com,
	bp@...en8.de, x86@...nel.org, linux-sgx@...r.kernel.org,
	linux-mm@...ck.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] x86/sgx: use vm_flags_t for vm_prot_bits

On Thu, Jan 22, 2026 at 01:54:35PM +0800, Wentong Tian wrote:
> The vm_flags_t type is the dedicated type for virtual memory flags.
> Architecture and driver code should use this type instead of assuming
> vm_flags is an unsigned long, as the underlying type may change in the
> future.
> 
> This follows the cleanup in commit d75fa3c94750 ("mm: update
> architecture and driver code to use vm_flags_t") by converting the
> remaining vm_prot_bits usage in SGX code.
> 
> No functional change intended.
> 
> Signed-off-by: Wentong Tian <tianwentong2000@...il.com>
> ---
>  arch/x86/kernel/cpu/sgx/encl.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/arch/x86/kernel/cpu/sgx/encl.c b/arch/x86/kernel/cpu/sgx/encl.c
> index cf149b9f4916..814edcde225d 100644
> --- a/arch/x86/kernel/cpu/sgx/encl.c
> +++ b/arch/x86/kernel/cpu/sgx/encl.c
> @@ -281,7 +281,7 @@ static struct sgx_encl_page *sgx_encl_load_page_in_vma(struct sgx_encl *encl,
>  						       unsigned long addr,
>  						       vm_flags_t vm_flags)
>  {
> -	unsigned long vm_prot_bits = vm_flags & VM_ACCESS_FLAGS;
> +	vm_flags_t vm_prot_bits = vm_flags & VM_ACCESS_FLAGS;
>  	struct sgx_encl_page *entry;
>  
>  	entry = xa_load(&encl->page_array, PFN_DOWN(addr));
> -- 
> 2.34.1
> 

Reviewed-by: Jarkko Sakkinen <jarkko@...nel.org>

BR, Jarkko