diff options
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/x86/include/asm/vga.h | 14 | ||||
| -rw-r--r-- | arch/x86/mm/pageattr.c | 2 |
2 files changed, 15 insertions, 1 deletions
diff --git a/arch/x86/include/asm/vga.h b/arch/x86/include/asm/vga.h index c4b9dc2f67c5..9f42beefc67a 100644 --- a/arch/x86/include/asm/vga.h +++ b/arch/x86/include/asm/vga.h @@ -7,12 +7,24 @@ #ifndef _ASM_X86_VGA_H #define _ASM_X86_VGA_H +#include <asm/set_memory.h> + /* * On the PC, we can just recalculate addresses and then * access the videoram directly without any black magic. + * To support memory encryption however, we need to access + * the videoram as decrypted memory. */ -#define VGA_MAP_MEM(x, s) (unsigned long)phys_to_virt(x) +#define VGA_MAP_MEM(x, s) \ +({ \ + unsigned long start = (unsigned long)phys_to_virt(x); \ + \ + if (IS_ENABLED(CONFIG_AMD_MEM_ENCRYPT)) \ + set_memory_decrypted(start, (s) >> PAGE_SHIFT); \ + \ + start; \ +}) #define vga_readb(x) (*(x)) #define vga_writeb(x, y) (*(y) = (x)) diff --git a/arch/x86/mm/pageattr.c b/arch/x86/mm/pageattr.c index 9c8ea129ff5c..dfb7d657cf43 100644 --- a/arch/x86/mm/pageattr.c +++ b/arch/x86/mm/pageattr.c @@ -1831,11 +1831,13 @@ int set_memory_encrypted(unsigned long addr, int numpages) { return __set_memory_enc_dec(addr, numpages, true); } +EXPORT_SYMBOL_GPL(set_memory_encrypted); int set_memory_decrypted(unsigned long addr, int numpages) { return __set_memory_enc_dec(addr, numpages, false); } +EXPORT_SYMBOL_GPL(set_memory_decrypted); int set_pages_uc(struct page *page, int numpages) { |