linux-kernel - Re: [PATCH 3/3] memblock: cleanup memblock

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Date:   Thu, 23 Sep 2021 10:15:11 +0200
From:   Juergen Gross <jgross@...e.com>
To:     Mike Rapoport <rppt@...nel.org>,
        Linus Torvalds <torvalds@...ux-foundation.org>
Cc:     Andrew Morton <akpm@...ux-foundation.org>,
        devicetree@...r.kernel.org, iommu@...ts.linux-foundation.org,
        kasan-dev@...glegroups.com, kvm@...r.kernel.org,
        linux-alpha@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-efi@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-mips@...r.kernel.org, linux-mm@...ck.org,
        linux-riscv@...ts.infradead.org, linux-s390@...r.kernel.org,
        linux-sh@...r.kernel.org, linux-snps-arc@...ts.infradead.org,
        linux-um@...ts.infradead.org, linux-usb@...r.kernel.org,
        linuxppc-dev@...ts.ozlabs.org, sparclinux@...r.kernel.org,
        xen-devel@...ts.xenproject.org, Mike Rapoport <rppt@...ux.ibm.com>
Subject: Re: [PATCH 3/3] memblock: cleanup memblock_free interface

On 23.09.21 09:43, Mike Rapoport wrote:
> From: Mike Rapoport <rppt@...ux.ibm.com>
> 
> For ages memblock_free() interface dealt with physical addresses even
> despite the existence of memblock_alloc_xx() functions that return a
> virtual pointer.
> 
> Introduce memblock_phys_free() for freeing physical ranges and repurpose
> memblock_free() to free virtual pointers to make the following pairing
> abundantly clear:
> 
> 	int memblock_phys_free(phys_addr_t base, phys_addr_t size);
> 	phys_addr_t memblock_phys_alloc(phys_addr_t base, phys_addr_t size);
> 
> 	void *memblock_alloc(phys_addr_t size, phys_addr_t align);
> 	void memblock_free(void *ptr, size_t size);
> 
> Replace intermediate memblock_free_ptr() with memblock_free() and drop
> unnecessary aliases memblock_free_early() and memblock_free_early_nid().
> 
> Suggested-by: Linus Torvalds <torvalds@...ux-foundation.org>
> Signed-off-by: Mike Rapoport <rppt@...ux.ibm.com>

arch/x86/xen/ parts: Reviewed-by: Juergen Gross <jgross@...e.com>


Juergen

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