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From: Claudio Imbrenda <imbrenda@linux.ibm.com>
To: linux-kernel@vger.kernel.org
Cc: kvm@vger.kernel.org, linux-s390@vger.kernel.org,
	frankja@linux.ibm.com, borntraeger@de.ibm.com, cohuck@redhat.com,
	david@redhat.com, linux-mm@kvack.org,
	Andrew Morton <akpm@linux-foundation.org>,
	Nicholas Piggin <npiggin@gmail.com>,
	Uladzislau Rezki <urezki@gmail.com>,
	Catalin Marinas <catalin.marinas@arm.com>,
	Thomas Gleixner <tglx@linutronix.de>,
	Ingo Molnar <mingo@redhat.com>,
	David Rientjes <rientjes@google.com>,
	Christoph Hellwig <hch@infradead.org>
Subject: [PATCH v3 0/2] mm: add vmalloc_no_huge and use it
Date: Thu, 10 Jun 2021 17:42:18 +0200	[thread overview]
Message-ID: <20210610154220.529122-1-imbrenda@linux.ibm.com> (raw)

Add vmalloc_no_huge and export it, so modules can allocate memory with
small pages.

Use the newly added vmalloc_no_huge in KVM on s390 to get around a
hardware limitation.

v2->v3:
* do not export __vmalloc_node_range
* add vmalloc_no_huge as a wrapper around __vmalloc_node_range
* use vmalloc_no_huge instead of __vmalloc_node_range in kvm on s390x

Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Nicholas Piggin <npiggin@gmail.com>
Cc: Uladzislau Rezki (Sony) <urezki@gmail.com>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: David Rientjes <rientjes@google.com>
Cc: Christoph Hellwig <hch@infradead.org>

Claudio Imbrenda (2):
  mm/vmalloc: add vmalloc_no_huge
  KVM: s390: fix for hugepage vmalloc

 arch/s390/kvm/pv.c      |  2 +-
 include/linux/vmalloc.h |  1 +
 mm/vmalloc.c            | 16 ++++++++++++++++
 3 files changed, 18 insertions(+), 1 deletion(-)

-- 
2.31.1



             reply	other threads:[~2021-06-10 15:42 UTC|newest]

Thread overview: 7+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-06-10 15:42 Claudio Imbrenda [this message]
2021-06-10 15:42 ` [PATCH v3 1/2] mm/vmalloc: add vmalloc_no_huge Claudio Imbrenda
2021-06-10 19:31   ` Uladzislau Rezki
2021-06-14  2:01   ` Nicholas Piggin
2021-06-10 15:42 ` [PATCH v3 2/2] KVM: s390: fix for hugepage vmalloc Claudio Imbrenda
2021-06-10 15:56   ` Christian Borntraeger
2021-06-14  1:43   ` Nicholas Piggin

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