From: Christoph Hellwig <hch@lst.de>
To: Nathan Chancellor <nathan@kernel.org>
Cc: "Vishal Moola (Oracle)" <vishal.moola@gmail.com>,
linux-kernel@vger.kernel.org, linux-mm@kvack.org,
bpf@vger.kernel.org, Uladzislau Rezki <urezki@gmail.com>,
Christoph Hellwig <hch@infradead.org>,
Andrew Morton <akpm@linux-foundation.org>,
Christoph Hellwig <hch@lst.de>,
kvmarm@lists.linux.dev
Subject: Re: [PATCH v3 1/4] mm/vmalloc: warn on invalid vmalloc gfp flags
Date: Wed, 19 Nov 2025 06:44:28 +0100 [thread overview]
Message-ID: <20251119054428.GC19925@lst.de> (raw)
In-Reply-To: <20251118224448.GA998046@ax162>
On Tue, Nov 18, 2025 at 03:44:48PM -0700, Nathan Chancellor wrote:
> where kvm_arch_alloc_vm() from arch/arm64/kvm/arm.c is
>
> struct kvm *kvm_arch_alloc_vm(void)
> {
> size_t sz = sizeof(struct kvm);
>
> if (!has_vhe())
> return kzalloc(sz, GFP_KERNEL_ACCOUNT);
>
> return __vmalloc(sz, GFP_KERNEL_ACCOUNT | __GFP_HIGHMEM | __GFP_ZERO);
> }
>
> Should __GFP_HIGHMEM be dropped from the call to __vmalloc?
Yes. vmalloc uses highmem internally where useful (on arm64 it won't be
useful of course).
next prev parent reply other threads:[~2025-11-19 5:44 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-11-17 17:35 [PATCH v3 0/4] make vmalloc gfp flags usage more apparent Vishal Moola (Oracle)
2025-11-17 17:35 ` [PATCH v3 1/4] mm/vmalloc: warn on invalid vmalloc gfp flags Vishal Moola (Oracle)
2025-11-18 9:34 ` Uladzislau Rezki
2025-11-18 22:44 ` Nathan Chancellor
2025-11-19 0:54 ` Oliver Upton
2025-11-19 5:44 ` Christoph Hellwig [this message]
2025-11-17 17:35 ` [PATCH v3 2/4] mm/vmalloc: Add a helper to optimize vmalloc allocation gfps Vishal Moola (Oracle)
2025-11-18 9:35 ` Uladzislau Rezki
2025-11-17 17:35 ` [PATCH v3 3/4] mm/vmalloc: cleanup large_gfp in vm_area_alloc_pages() Vishal Moola (Oracle)
2025-11-18 9:35 ` Uladzislau Rezki
2025-11-17 17:35 ` [PATCH v3 4/4] mm/vmalloc: cleanup gfp flag use in new_vmap_block() Vishal Moola (Oracle)
2025-11-18 9:36 ` Uladzislau Rezki
2025-11-20 1:03 ` [PATCH v3 0/4] make vmalloc gfp flags usage more apparent SeongJae Park
2025-11-20 18:04 ` Andrew Morton
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