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[uaccess] Remove user_to_phys() and phys_to_user()

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Remove the intermediate concept of a user pointer from physical
address conversions, leaving virt_to_phys() and phys_to_virt() as the
directly implemented functions.

Signed-off-by: Michael Brown <mcb30@ipxe.org>
This commit is contained in:
Michael Brown
2025-04-21 16:16:01 +01:00
parent 4535548cba
commit 8c31270a21
48 changed files with 211 additions and 235 deletions
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30
src/arch/x86/interface/pcbios/memtop_umalloc.c
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@@ -106,7 +106,7 @@ size_t largest_memblock ( userptr_t *start ) {
/* Use largest block */
if ( region_len > len ) {
DBG ( "...new best block found\n" );
*start = phys_to_user ( region_start );
*start = phys_to_virt ( region_start );
len = region_len;
}
}
@@ -124,7 +124,7 @@ static void init_eheap ( void ) {
heap_size = largest_memblock ( &base );
bottom = top = ( base + heap_size );
DBG ( "External heap grows downwards from %lx (size %zx)\n",
user_to_phys ( top, 0 ), heap_size );
virt_to_phys ( top ), heap_size );
}
/**
@@ -141,8 +141,8 @@ static void ecollect_free ( void ) {
sizeof ( extmem ) );
if ( extmem.used )
break;
DBG ( "EXTMEM freeing [%lx,%lx)\n", user_to_phys ( bottom, 0 ),
user_to_phys ( bottom, extmem.size ) );
DBG ( "EXTMEM freeing [%lx,%lx)\n", virt_to_phys ( bottom ),
( virt_to_phys ( bottom ) + extmem.size ) );
len = ( extmem.size + sizeof ( extmem ) );
bottom += len;
heap_size += len;
@@ -182,7 +182,7 @@ static userptr_t memtop_urealloc ( userptr_t ptr, size_t new_size ) {
ptr = bottom = ( bottom - sizeof ( extmem ) );
heap_size -= sizeof ( extmem );
DBG ( "EXTMEM allocating [%lx,%lx)\n",
user_to_phys ( ptr, 0 ), user_to_phys ( ptr, 0 ) );
virt_to_phys ( ptr ), virt_to_phys ( ptr ) );
extmem.size = 0;
}
extmem.used = ( new_size > 0 );
@@ -191,7 +191,7 @@ static userptr_t memtop_urealloc ( userptr_t ptr, size_t new_size ) {
if ( ptr == bottom ) {
/* Update block */
new = ( ptr - ( new_size - extmem.size ) );
align = ( user_to_phys ( new, 0 ) & ( EM_ALIGN - 1 ) );
align = ( virt_to_phys ( new ) & ( EM_ALIGN - 1 ) );
new_size += align;
new -= align;
if ( new_size > ( heap_size + extmem.size ) ) {
@@ -199,10 +199,10 @@ static userptr_t memtop_urealloc ( userptr_t ptr, size_t new_size ) {
return UNULL;
}
DBG ( "EXTMEM expanding [%lx,%lx) to [%lx,%lx)\n",
user_to_phys ( ptr, 0 ),
user_to_phys ( ptr, extmem.size ),
user_to_phys ( new, 0 ),
user_to_phys ( new, new_size ));
virt_to_phys ( ptr ),
( virt_to_phys ( ptr ) + extmem.size ),
virt_to_phys ( new ),
( virt_to_phys ( new ) + new_size ) );
memmove ( new, ptr, ( ( extmem.size < new_size ) ?
extmem.size : new_size ) );
bottom = new;
@@ -213,8 +213,8 @@ static userptr_t memtop_urealloc ( userptr_t ptr, size_t new_size ) {
if ( new_size > extmem.size ) {
/* Refuse to expand */
DBG ( "EXTMEM cannot expand [%lx,%lx)\n",
user_to_phys ( ptr, 0 ),
user_to_phys ( ptr, extmem.size ) );
virt_to_phys ( ptr ),
( virt_to_phys ( ptr ) + extmem.size ) );
return UNULL;
}
}
@@ -225,9 +225,9 @@ static userptr_t memtop_urealloc ( userptr_t ptr, size_t new_size ) {
/* Collect any free blocks and update hidden memory region */
ecollect_free();
hide_umalloc ( user_to_phys ( bottom, ( ( bottom == top ) ?
0 : -sizeof ( extmem ) ) ),
user_to_phys ( top, 0 ) );
hide_umalloc ( ( virt_to_phys ( bottom ) -
( ( bottom == top ) ? 0 : sizeof ( extmem ) ) ),
virt_to_phys ( top ) );
return ( new_size ? new : UNOWHERE );
}