Re: [RFC V2 1/2] arm64/mm: Change THP helpers per generic memory semantics

2020-08-16 Thread Anshuman Khandual
On 07/07/2020 11:14 PM, Catalin Marinas wrote: > On Mon, Jul 06, 2020 at 09:27:04AM +0530, Anshuman Khandual wrote: >> On 07/02/2020 05:41 PM, Catalin Marinas wrote: >>> On Mon, Jun 15, 2020 at 06:45:17PM +0530, Anshuman Khandual wrote: --- a/arch/arm64/include/asm/pgtable.h +++ b/arch

Re: [RFC V2 1/2] arm64/mm: Change THP helpers per generic memory semantics

2020-07-07 Thread Catalin Marinas
On Mon, Jul 06, 2020 at 09:27:04AM +0530, Anshuman Khandual wrote: > On 07/02/2020 05:41 PM, Catalin Marinas wrote: > > On Mon, Jun 15, 2020 at 06:45:17PM +0530, Anshuman Khandual wrote: > >> --- a/arch/arm64/include/asm/pgtable.h > >> +++ b/arch/arm64/include/asm/pgtable.h > >> @@ -353,15 +353,92

Re: [RFC V2 1/2] arm64/mm: Change THP helpers per generic memory semantics

2020-07-05 Thread Anshuman Khandual
On 07/02/2020 05:41 PM, Catalin Marinas wrote: > Hi Anshuman, Hi Catalin, > > On Mon, Jun 15, 2020 at 06:45:17PM +0530, Anshuman Khandual wrote: >> --- a/arch/arm64/include/asm/pgtable.h >> +++ b/arch/arm64/include/asm/pgtable.h >> @@ -353,15 +353,92 @@ static inline int pmd_protnone(pmd_t pm

Re: [RFC V2 1/2] arm64/mm: Change THP helpers per generic memory semantics

2020-07-02 Thread Catalin Marinas
Hi Anshuman, On Mon, Jun 15, 2020 at 06:45:17PM +0530, Anshuman Khandual wrote: > --- a/arch/arm64/include/asm/pgtable.h > +++ b/arch/arm64/include/asm/pgtable.h > @@ -353,15 +353,92 @@ static inline int pmd_protnone(pmd_t pmd) > } > #endif > > +#define pmd_table(pmd) ((pmd_val(pmd) & PM

[RFC V2 1/2] arm64/mm: Change THP helpers per generic memory semantics

2020-06-15 Thread Anshuman Khandual
pmd_present() and pmd_trans_huge() are expected to behave in the following manner during various phases of a PMD entry. This table is derived from a previous discussion on this topic [1] and available THP documentation [2]. pmd_present(pmd): - True if PMD has a mapped huge page i.e valid pmd_page