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ACPI / APEI: Remove ghes_ioremap_area 

Now that nothing is using the ghes_ioremap_area pages, rip them out.

Signed-off-by: James Morse <james.morse@arm.com>
Reviewed-by: Borislav Petkov <bp@suse.de>
Tested-by: Tyler Baicar <tbaicar@codeaurora.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Cc: All applicable <stable@vger.kernel.org>
This commit is contained in:
James Morse 2017-11-06 18:44:25 +00:00 committed by Rafael J. Wysocki
parent 4f89fa286f
commit 520e18a508
1 changed files with 2 additions and 37 deletions
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39
drivers/acpi/apei/ghes.c
View File

@ -114,19 +114,7 @@ static DEFINE_MUTEX(ghes_list_mutex);
* from BIOS to Linux can be determined only in NMI, IRQ or timer
* handler, but general ioremap can not be used in atomic context, so
* the fixmap is used instead.
*/
/*
* Two virtual pages are used, one for IRQ/PROCESS context, the other for
* NMI context (optionally).
*/
#define GHES_IOREMAP_PAGES 2
#define GHES_IOREMAP_IRQ_PAGE(base) (base)
#define GHES_IOREMAP_NMI_PAGE(base) ((base) + PAGE_SIZE)
/* virtual memory area for atomic ioremap */
static struct vm_struct *ghes_ioremap_area;
/*
*
* These 2 spinlocks are used to prevent the fixmap entries from being used
* simultaneously.
*/
@ -141,23 +129,6 @@ static atomic_t ghes_estatus_cache_alloced;
static int ghes_panic_timeout __read_mostly = 30;
static int ghes_ioremap_init(void)
{
ghes_ioremap_area = __get_vm_area(PAGE_SIZE * GHES_IOREMAP_PAGES,
VM_IOREMAP, VMALLOC_START, VMALLOC_END);
if (!ghes_ioremap_area) {
pr_err(GHES_PFX "Failed to allocate virtual memory area for atomic ioremap.\n");
return -ENOMEM;
}
return 0;
}
static void ghes_ioremap_exit(void)
{
free_vm_area(ghes_ioremap_area);
}
static void __iomem *ghes_ioremap_pfn_nmi(u64 pfn)
{
phys_addr_t paddr;
@ -1247,13 +1218,9 @@ static int __init ghes_init(void)
ghes_nmi_init_cxt();
rc = ghes_ioremap_init();
if (rc)
goto err;
rc = ghes_estatus_pool_init();
if (rc)
goto err_ioremap_exit;
goto err;
rc = ghes_estatus_pool_expand(GHES_ESTATUS_CACHE_AVG_SIZE *
GHES_ESTATUS_CACHE_ALLOCED_MAX);
@ -1277,8 +1244,6 @@ static int __init ghes_init(void)
return 0;
err_pool_exit:
ghes_estatus_pool_exit();
err_ioremap_exit:
ghes_ioremap_exit();
err:
return rc;
}