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x86/sev: Fix address space sparse warning

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Fix:

  arch/x86/kernel/sev.c:605:16: warning: incorrect type in assignment (different address spaces)
  arch/x86/kernel/sev.c:605:16:    expected struct snp_secrets_page_layout *layout
  arch/x86/kernel/sev.c:605:16:    got void [noderef] __iomem *[assigned] mem

Reported-by: kernel test robot <lkp@intel.com>
Signed-off-by: Borislav Petkov <bp@suse.de>
Link: https://lore.kernel.org/r/202205022233.XgNDR7WR-lkp@intel.com
This commit is contained in:
Borislav Petkov 2022-05-02 17:33:40 +02:00
parent c2106a231c
commit ab65f49253
1 changed files with 6 additions and 3 deletions
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9
arch/x86/kernel/sev.c
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@ -589,20 +589,23 @@ static u64 __init get_secrets_page(void)
static u64 __init get_snp_jump_table_addr(void)
{
struct snp_secrets_page_layout *layout;
void __iomem *mem;
u64 pa, addr;
pa = get_secrets_page();
if (!pa)
return 0;
layout = (__force void *)ioremap_encrypted(pa, PAGE_SIZE);
if (!layout) {
mem = ioremap_encrypted(pa, PAGE_SIZE);
if (!mem) {
pr_err("Unable to locate AP jump table address: failed to map the SNP secrets page.\n");
return 0;
}
layout = (__force struct snp_secrets_page_layout *)mem;
addr = layout->os_area.ap_jump_table_pa;
iounmap(layout);
iounmap(mem);
return addr;
}